Blog

  • 21 Sept 2020

    Paper accepted for publication

    Another paper accepted for publication entitled "Colorimetry of dairy products" to be published in the International Dairy Journal. This paper discusses the use of a colorimeter to measure the colour of various dairy products instead of the human eye with comparison to reference colour charts.

  • 15 Sept 2020

    Harvey W. Wiley Award Symposium

    Gave presentation on chrial chromaotgraphic analysis of α‑tocopherol at the Wiley award symposium. This was a recorded presentation given since the AOAC Annual Meeting was a virtual one given the Covid‑19 pandemic. The recording process went well and I was pleased at how the talk went. The downside of this appproach is not getting feed-back compared to a live presentation and I am unaware of how big the audience was.

  • 14 Sept 2020

    Virtual AOAC Annual Meeting & Conference

    Due to Covid‑19 the 134th AOAC Annual Meeting will be a virtual one instead of meeting in Orlando, Fl. This seems the best solution to avoid spreading the virus. All of the symposia are pre-recorded for broadcast and the meetings will be held live but remotely. I am disappointed as I was looking forward to catching up with friends and coilleagues as well as spending some free time visit Disneyworld.

  • 11 Jun 2020

    Paper accepted for publication

    Paper accepted for publication entitled "Challenge to evaluate regulatory compliance for nutrients in infant formulas with current state-of-the-art analytical reference methods" to be published in the Food Control. Many thanks to lead-author Erik Konings for preparing the first draft of this paper and handling the edits and reviews.

  • 10 Jun 2020

    Chair-elect for Editorial Board of the Journal of AOAC International

    The editorial board of the Journal of AOAC International has elected me for their next chair for the term 2020–2020. My term as chair will commence in October. The role of the editorial board is "to foster the highest standards scientific integrity and maintain the Association’s reputation as a globally leading source for scientific information in the areas of food safety, food integrity, and public health". With lots of recent changes in the publication of the journal, there's a lot of work for the board to complete over the next term.

  • 17 Apr 2020

    Paper accepted for publication

    Paper accepted for publication entitled "Comparison of LC-MS/MS and enzymatic methods for the determination of total choline and total carnitine in infant formula and milk products" to be published in the Journal of AOAC International. This paper discusses a validation study which confirms that alternative enzymatic assays can be used with confidence in laboratories in which LC-MS/MS platforms are unavailable.

  • 07 Apr 2020

    Paper accepted for publication

    Paper accepted for publication entitled "Separation of RRR-α-tocopherol by chiral chromatography" to be published in the Journal of AOAC International. This paper describes the successful development of a chromatographic method utilizing a chiral column for the chromatographic separation of RRR-α-tocopherol from other α‑tocopherol stereoisomers.

  • 25 Mar 2020

    Covid-19 Level 4 Lockdown—Waitoa, New Zealand

    New Zealand has gone into lockdown to prevent the spread of Covid‑19. As a non-essential worker, I will be working from home for now until the lockdown ends. Fortunately much of my work is computer-based and I can successfully do many tasks from my office at home. I hope that we get on top of the virus and limit it's spread so that we can go back to living our lives safely.

  • 09 Mar 2020

    AOAC Mid-Year Meeting—Gaithersburg, MD, USA

    Due to Covid‑19 pandemic, I was unable to attend the AOAC Mid-Year Meeting in Gaithersburg, MD. Quite disappointing not to ctach up with friend and colleagues as well as missing out on some personal travel. However, I felt very nervous about travelling and it is a relief not to put my health at risk, or that of my family upon my return to New Zealand.

  • 1 Jan 2020

    Congratulations Harvey!

    Congratulations to my colleague and friend Dr. Harvey Indyk, who was made an Officer of the New Zealand Order of Merit in the New Year’s Honours List. A very prestigious honour and well-deserved.

  • 13 Dec 2019

    Paper accepted for publication

    Paper accepted for publication entitled "Rapid method for the determination of sorbic acid in cheese by high performance liquid chromatography" to be published in the Journal of AOAC International. The paper describes a high-throughput method for routine testing of sorbic acid. The method was subjected to singlelaboratory validation and was found to be accurate, precise, and fit-for-purpose.

  • 23 Oct 2019

    Paper accepted for publication

    Paper accepted for publication entitled "Differential thermal isomerization: its role in the analysis of vitamin D3 in foods" to be published in the Journal of AOAC International. This paper details the challenging apsects of vitamin D analysis due to thermal equilibration between vitamin D and previtamin D forms.

  • 6 Sept 2019

    AOAC Annual Meeting & Conference—Denver, CO, USA

    I attended the 133rd AOAC Annual Meeting in Denver. The AOAC Annual Meeting offers scientific sessions, roundtables, workshops, and poster presentations to meet a variety of analytical needs and brings the attendees science-based research from the top scientists in the world to discuss technical information about changes and advances in methodology, and provide access to the latest techniques and applications. I have many meetings to attend this time around as a volunteer and especially important are the SPIFAN meetings.

  • 31 Jul 2019

    Paper accepted for publication

    Paper accepted for publication entitled "Development and application of an optical biosensor immunoassay for aflatoxin M1 in bovine milk" to be published in the Food Analytical Methods. This paper describes the development of a method for measuring aflatoxin M1 in milk. Aflatoxin M1 is the hydroxylated metabolite of aflatoxin B1 and can be found in milk or milk products obtained from livestock that have ingested contaminated feed. The method facilitates routine screening for aflatoxin M1 content prior to confirmatory analysis by reference chromatographic methods.

  • 25 Jul 2019

    Paper accepted for publication

    Paper accepted for publication entitled "The analysis of vitamin B12 in milk and infant formula: a review" to be published in the International Dairy Journal. This review discusses the application of modern instrumental techniques for analysis of vitamin B12 in milk as well as a variety of sample preparations, together with their respective advantages and drawbacks.

  • 04 Jul 2019

    ISO TC34/WG14 Meeting—Bergen, Norway

    Attended the ISO TC34/WG14 Meeting to discuss adoption of SPIFAN methods as ISO international standards. The city of Bergen is beautiful in summer. The markets are full of fish and dining out was a pleasure at some of the many seafood restaurants.

  • 01 Jul 2019

    Laboratory—Lausanne, Switzerland

    Visited a laboratory and dicussed numerous analytical techniques and applications.

    Stopped off at Bern and saw the Einstein Museum. I had a quick swim in Lake Geneva on a very hot day as I walked from Montreux to Château de Chillon

  • 18 Mar 2019

    Vendor visit—Glasgow, Scotland

    Spent time learning about aflatoxin immunoassays.

    Drove to see a couple of castles while in Scotland. Both Stirling and Edinburgh castles have stellar views and I love touring castles.

  • 26 Feb 2019

    Paper accepted for publication

    Paper accepted for publication entitled "Significance of previtamin D chromatographic resolution in the accurate determination of vitamin D3 by HPLC‑UV" to be published in the Journal of Food Compositional Analysis. This paper details chromatographic separation of vitamin D3 and the impact of previtamin isomerisation when using internal standardisation with vitamin D2.

  • 7 Jan 2019

    Paper accepted for publication

    Paper accepted for publication entitled "Significance of thermal isomerisation on the quantitation of total vitamin D3 in foods" to be published in Food Analytical Methods. This paper discusses the details the challenging apsects of vitamin D analysis due to differential thermal isomerisation.

  • 27 Sept 2018

    The Kudos Awards—Hamilton, New Zealand

    At the 2018 Kudos Awards gala dinner, I was awarded the Hamilton City Council Emerging Scientist of the Year. It was great evening, fabulous meal and plenty of laughter with Te-Radar as MC.

  • 26 Aug 2018

    AOAC Annual Meeting & Conference—Toronto, Canada

    I attended the 132nd AOAC Annual Meeting in Denver.

    I took opportunity to visit huge games workshop (boardgames and roleplaying games. Carys calls these stores "Nerd Lairs", and since I am a nerd I find them interesting places to visit. Also took a side-trip to see Niagara Falls which was worth the two-hour drive from Toronto.

  • 09 Aug 2018

    Local Newspaper Story—Morrinsville, New Zealand

    A local newspaper, the Morrinsville News, has published a profile story of detailing my role at the Waitoa Dairy factory and appointment to the Official Methods Board of AOAC International.

  • 10 Jul 2018

    Vitamin D method published as ISO standard—Geneva, Switzerland

    An analytical method for vitamin D in infant formula I developed is now an ISO Standard and published as ISO 20636:2018 Infant Formula and Adult Nutritionals--Determination of Vitamin D by Liquid Chromatography-Mass Spectrometry. This vitamin D international standard will be proposed to Codex Alimentarius as a Type II 'dispute resolution' method and it will become the reference method for vitamin D in infant formulas worldwide.

  • 06 Jul 2018

    Codex adoption of vitamin D method—Rome, Italy

    At the 39th session of the Codex Alimentarius Commission, recommendations by CCMAS were accepted and the vitamin D method I developed was officially adopted as a Codex Type II 'Reference Method' for dispute resolution and calibration purposes.

  • 06 Jun 2018

    AOAC Official Methods Board—Gaithersburg, MD, USA

    I have just been appointed to the AOAC Official Methods Board (OMB). The OMB is the lead scientific committee which evaluates and approves official methods that can be used with confidence by regulated industry, regulatory agencies, contract research organizations and testing laboratories, and academic institutions. Official Methods undergo rigorous scientific scrutiny and demonstrate the highest level of confidence in a method. I am very excited by this appointment and am eager to begin my first 3‑year term which starts in August.

  • 07 May 2018

    CCMAS endorsement of vitamin D method—Budapest, Hungary

    At the 39th session of the Codex Committee on Methods of Analysis and Sampling (CCMAS) held in Budapest, the vitamin D method I developed was recommended to be adopted as a Codex Type II 'Reference Method' for dispute resolution and calibration purposes.

  • 27 Mar 2018

    Paper accepted for publication

    Paper accepted for publication entitled "A rapid method for the determination of biotin and folic acid in liquid milk, milk powders, infant formula, and milk-based nutritional products by liquid chromatography‒tandem mass spectrometry" to be published in Journal of AOAC International. This paper describes a rapid method is intended for use in high-throughput laboratories for routine product compliance release testing of biotin and folic acid as part of the manufacture of infant formulas and adult nutritional products.

  • 12 Mar 2018

    SPIFAN meetings at AOAC Mid-Year Meeting—Gaithersburg, MD, USA

    I attended the 17th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. It's always nice to visit the east cost when there's snow on the ground. It's a bit chilly going out but pleeasant otherwise. Went to Barnes&Noble and bought some board games for the family.

  • 24 Sept 2017

    AOAC Annual Meeting & Conference—Atlanta, GA, USA

    I attended the 131st AOAC Annual Meeting in Atlanta. At this meeting I received the Method of the Year award and Technical Service of the Year award. Either of these awards are very prestigious and I am honoured to have been awarded both. I attended the 16th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

  • 04 Jul 2017

    New Zealand Business Innovation Awards—Auckland, New Zealand

    I attended the New Zealand Business Innovation Awards held at Auckland's Viaduct Harbour. Our vitamin D method was a finalist in the Innovation Systems & Performance Improvement category. The evening was fantastic with many of New Zealand's technological innovators in attendance.

  • 30 May 2017

    Paper accepted for publication

    Paper accepted for publication entitled "Analysis of vitamin D2 and vitamin D3 in infant and adult nutritional formulas by liquid chromatography-tandem mass spectrometry: a multi-laboratory testing study" to be published in Journal of AOAC International. This paper describes the multilaboratory testing study was conducted on AOAC First Action Method 2016.05: Analysis of vitamin D2 and vitamin D3 in fortified milk powders, infant formulas, and adult/pediatric nutritional formulas by liquid chromatography-tandem mass spectrometry.

  • 30 May 2017

    Paper accepted for publication

    Paper accepted for publication entitled "The β‑lactoglobulin content of bovine milk: development and application of a biosensor immunoassay" to be published in International Dairy Journal. This paper describes the development and validation of an optical biosensor immunoassay exploiting surface plasmon resonance for the quantification of β‑lactoglobulin in milk.

  • 26 May 2017

    Paper accepted for publication

    Paper accepted for publication entitled "Analysis of vitamin D2 and vitamin D3 in fortified milk powders and infant and nutritional formulas by liquid chromatography-tandem mass spectrometry: Single-Laboratory Validation, First Action 2016.05" to be published in Journal of AOAC International. This paper is the Official Method also published in AOAC Official Methods of Analysis.

  • 16 Mar 2017

    SPIFAN meetings at AOAC Mid-Year Meeting—Gaithersburg, MD, USA

    I attended the 15th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. Our vitamin D method has was endorsed by the Expert Review Panel as an now AOAC Official Final Action Method (AOAC 2016.05).

  • 19 Sept 2016

    Laboratory—Evansville, IN, USA

    Visited a laboratory and discussed a range of anaytical issues and had a tour of the facility.

    Enjoyed a fantastic lunch at local Beir Haus whith great company.

  • 17 Sept 2016

    AOAC Annual Meeting & Conference—Dallas, TX, USA

    I attended the 130th AOAC Annual Meeting in Atlanta. At this meeting I was recognised for 10 year AOAC membership and also received Method of the Year award and Technical Service of the Year award. Either of these awards are very prestigious and I am honoured to have been awarded both. I attended the 14th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

  • 28 Aug 2016

    31st International Symposium on Chromatography—Cork, Ireland

    The major focus of the symposium was the impact and continuing contribution of chromatography and separation science to meet the needs of the pharmaceutical, food, health, science and medicine industry. The symposium programme reflected on these themes and highlight new challenges and emerging opportunities for the science of separation and detection systems and methods.

    Just prior to the start of the confertence I took some personal time and visited Skellig Michael, a small island west of the Iveragh Peninsula in County Kerry, Ireland. It is best known for its Gaelic monastery, founded between the 6th and 8th centuries, and its variety of inhabiting species, which include gannets, puffins, a colony of razorbills and a population of approximately fifty grey seals. The monastery can be reached by climbing narrow and steep stone steps. It's an amazing place, made all the more special given the difficulty in getting there. I would love to visit again.

  • 29 Jul 2016

    Paper accepted for publication

    Paper accepted for publication entitled "The determination of vitamin D3 and 25‑hydroxyvitamin D3 in early lactation and seasonal bovine milk" to be published in Journal of AOAC International. This paper describes a study concerning endogenous vitamin D content that will enhance formulation capability related to the production of bovine milk-based paediatric products.

  • 01 Jul 2016

    Codex doption of nucleotides method—Rome, Italy

    At the 39th session of the Codex Alimentarius Commission held in Rome, the nucleotides in infant formula by HPLC‑UV method I developed was officially adopted as a Type II reference method. A Type II method is recommended for use in cases of dispute and for calibration purposes. Codex Alimentarius is a collection of internationally recognized standards, codes of practice, guidelines, and other recommendations relating to foods, food production, and food safety.

  • 15 Jun 2016

    Paper accepted for publication

    Paper accepted for publication entitled "Analysis of vitamin D2 and vitamin D3 in fortified milk powders, infant and nutritional formulas by liquid chromatography-tandem mass spectrometry: First Action 2016.05" to be published in Journal of AOAC International. This paper describes the single laboratory validation of an LC-MS method against SPIFAN kit samples and compared with parameters defined according to the vitamin D SMPR.

  • 16 Mar 2016

    SPIFAN meetings at AOAC Mid-Year Meeting—Gaithersburg, MD, USA

    I attended the 13th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. Our vitamin D LC‑MS/MS method was endorsed by the Expert Review Panel as an now AOAC Official First Action Method (AOAC 2016.05).

  • 26 Feb 2016

    CCMAS endorsement of nucleotides method—Budapest, Hungary

    At the 37th session of the Codex Committee on Methods of Analysis and Sampling (CCMAS) held in Budapest, the nucleotides method I developed was recommended to be adopted as a Codex Type II 'Reference Method' for dispute resolution and calibration purposes.

  • 05 Jan 2016

    Paper accepted for publication

    Paper accepted for publication entitled "The free and total myo‑inositol contents of early lactation and seasonal bovine milk" to be published in theInternational Dairy Journal. This paper describes the application of an HPAEC‑PAD method to the determination of endogenous free and total myo‑inositol in bovine milk.

  • 15 Dec 2015

    Standards New Zealand article—Wellington, New Zealand

    Standards New Zealand published an article entitled: Ensuring that infant formulas deliver adequate nutrition, describing the input from New Zealand experts in developing new standards through International Standardards Organisation (ISO) and Codex Alimentarius.

  • 12 Nov 2015

    Nucleotides method published as ISO standard—Geneva, Switzerland

    ISO international standards are developed for verifying compliance of such products with labelling regulations for nutrients. ISO standards are developed by a working group of global experts, that form part of larger groups called technical committees. These experts negotiate all aspects of the standard, including its scope, key definitions and content. ISO standards are developed through a multi-stakeholder process and the technical committees are made up of experts from the relevant industry, academia, and government. Developing ISO standards is a consensus-based approach and comments from all stakeholders are taken into account.

    International standards specifying methods for testing vitamins and other micronutrients in infant formula will help ensure their nutrient content conforms to their declaration. To verify that infant formulas deliver all the necessary nutrients, accurate analytical test methods are required. These methods will provide internationally validated anchor points to calibrate routine methods for manufacturing purposes. Hence, these new analytical standards are poised to become critical enablers, ensuring that infant formulas deliver adequate nutrition to children.

    The analytical method for nucleotides in infant formula I developed is now an ISO Standard and published as ISO 20638:2015Infant formula--Determination of nucleotides by liquid chromatography.

  • 19 Oct 2015

    ISO TC34/WG14 Meeting—Brussels, Belgium

    Attended the ISO TC34/WG14 Meeting to discuss adoption of SPIFAN methods as ISO international standards. The city of Brussels is very picturesque and I walked every day thorugh the park opposite the Royal Palace.

  • 09 Oct 2015

    Paper accepted for publication

    Paper accepted for publication entitled "Current methods for the analysis of selected nutrients in infant formulas and adult nutritionals" to be published in Journal of AOAC International. This paper summarizes the contemporary analytical methods that have been applied to a representative selection (lutein, carnitine, choline, nucleotides, inositol, taurine, sialic acid, gangliosides, triacylglycerides, oligosaccharides, α-lactalbumin, and lactoferrin).

  • 26 Sept 2015

    AOAC Annual Meeting & Conference—Los Angeles, CA, USA

    I attended the 129th AOAC Annual Meeting in Los Angeles. At this meeting I was recognised as a Fellow of AOAC International. I attended the 12th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

  • 12 May 2015

    Laboratory—Davidstow, England

    Visited a laboratory.

  • 05 May 2015

    ISO TC34/WG14 Meeting—Paris, France

    Attended the ISO TC34/WG14 Meeting to discuss adoption of SPIFAN methods as ISO international standards. The city of Paris is amazing and I spent spare time exploring museums and galleries. It was exhausting and needed much more time than I had to see it all.

  • 07 Apr 2015

    Paper accepted for publication

    Paper accepted for publication entitled "Analysis of nucleotide 5′‑monophosphates in infant formulas by HPLC‑UV: collaborative study" to be published in Journal of AOAC International. This paper describes the results of a collaborative study conducted on AOAC First Action Method 2011.20: 5′‑mononucleotides in infant formula and adult/pediatric nutritional formula.

  • 09 Mar 2015

    SPIFAN meetings at AOAC Mid-Year Meeting—Gaithersburg, MD, USA

    Unfortunately, I was unable to attend the 11th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) due to family illness.

  • 26 Feb 2015

    Paper accepted for publication

    Paper accepted for publication en titled "An optical biosensor-based immunoassay for the determination of bovine serum albumin in milk and milk products" to be published in the International Dairy Journal. This paper describes an automated biosensor immunoassay, exploiting surface plasmon resonance detection, is described for the quantitation of bovine serum albumin (BSA) in milk products.

  • 18 Nov 2014

    Laboratory visits in China—Beijing, China

    Visited laboratories in China to learn various GB methods. The meetings and training went well.

    Personally, a visit to the Great Wall at Mutianyu was very much the highlight.

  • 23 Oct 2014

    Paper accepted for publication

    Paper accepted for publication entitled "A rapid method for the determination of vitamin D3 in milk and infant formula by liquid chromatography-mass spectrometry" to be published in Journal of AOAC International. This paper describes a rapid method for the determination of vitamin D3 in milk and infant formula products. Samples are saponified at high temperature, and lipophilic components are extracted into isooctane in a single tube. The vitamin D3 is derivatized with PTAD to form a Diels-Alder adduct, which is re-extracted into a small volume of acetonitrile and analyzed by UHPLC-MS/MS with quantification accomplished by an internal standard technique utilizing deuterium-labeled vitamin D3.

  • 06 Oct 2014

    Paper accepted for publication

    Paper accepted for publication entitled "Evaluation protocol for the review of method validation data by the AOAC Stakeholder Panel on Infant Formula and Adult Nutritionals Expert Review Panel" to be published in Journal of AOAC International. This paper describes a validation protocol and a checklist which were developed to assist the ERP to evaluate experimental data and to compare multiple candidate methods for each nutrient.

  • 26 Sept 2014

    AOAC Annual Meeting & Conference—Boca Raton, FL, USA

    I attended the 128th AOAC Annual Meeting in Boca Raton. I attended the 10th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. The nucleotides method I developed was endorsed by SPIFAN Expert Review Panel as an Official Final Action Method (AOAC 2011.20).

    Boca Raton is warm and humid and the poolside was the place to be to cool off after talking science all day.

  • 01 Jul 2014

    Promotion—Waitoa, New Zealand

    I have been promoted to Senior Research Scientist from my previous role as Research Scientist.

  • 19 Apr 2014

    AOAC Editorial Board appointment—Gaithersburg, MD, USA

    I was been appointed to the Editorial Board AOAC International, which oversees all publications including the Journal of AOAC International and is tasked with ensuring the highest standards of quality are maintained. My first 3-year term beings at the annual meeting in September.

  • 18 Mar 2014

    SPIFAN meetings at AOAC Mid-Year Meeting—Gaithersburg, MD, USA

    Attended the 9th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

  • 25 Feb 2014

    Paper accepted for publication

    Paper accepted for publication entitled "Application of an LC-UV method to estimate lutein recovery during infant formula manufacture" to be published in the International Dairy Journal. This paper describes the evaluation of lutein recovery through the manufacture of pediatric formula, confirming that lutein loss through the entire process is insignificant.

  • 02 Dec 2013

    LC-MS Installation—Waitoa, New Zealand

    The installation of the much aniticpated triple quadrupole mass spectrometer occurs today. The coupling of this instrument to a liquid chromatography system is a widely used analytical technique for quantitative and qualitative analysis.

    The ion source allows for the ionisation of various semi-volatile, thermally labile, and polar to nonpolar compounds in trace levels. These ions are then separated by molecular mass through a series of quadrupoles and identified by multiple reaction monitoring (MRM). The first quadrupole (Q1) filters a specific precursor ion of interest. Ions generated in the ion source having a different mass-tocharge ratio (m/z) cannot pass Q1. The collision cell (Q2) is optimized to produce a characteristic product ion by collision of the precursor ion with a neutral collision gas, such as nitrogen. Generated product ions are transferred into the third quadrupole (Q3) where only a specific m/z is allowed to pass on to the detector; all other product ions are filtered out in Q3.

    We will be able to use the LC‑MS for detecting analytes that are difficult or impossible by many other techniques.

  • 14 Oct 2013

    University of Waikato Graduation Ceremony—Hamilton, New Zealand

    Attended the University of Waikato Graduation Ceremony at which I was presented with my doctoral degree by the Chancellor of University of Waikato and former New Zealand Prime Minister Rt. Hon. Jim Bolger. I was pleased that the family could be there to witness the ceremony.

  • 01 Oct 2013

    Paper accepted for publication

    Paper accepted for publication entitled "Biotin content of paediatric formulae, early lactation milk and seasonal bovine milk powders by biosensor immunoassay" to be published in the International Dairy Journal. This paper describes the development of an optical biosensor assay utilising a monoclonal antibody for the quantitation of the biotin content of milk and paediatric formula.

  • 26 Sept 2013

    AOAC Annual Meeting & Conference—Chicago, IL, USA

    I attended the 127th AOAC Annual Meeting in Boca Raton. I attended the 8th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. The nucleotides method I developed was endorsed by SPIFAN Expert Review Panel as an Official Final Action Method (AOAC 2011.20).

    I love Chicago as a city to visit. The wnids off the lake made it pleasant to walk around and there were many restaurants to choose from for dinner. The "bean" was my favourite and I took many photos.

  • 12 Aug 2013

    Laboratory visits in China—Beijing, China

    Visited laboratories in China to leanr various GB methods.

    My first visit to an Asian city and I enjoyed it thoroughly. The Forbidden City was definitely a highlight.

  • 20 Mar 2013

    Paper accepted for publication

    Paper accepted for publication entitled "Analysis of nucleosides and nucleotides in infant formula by liquid chromatography-tandem mass spectrometry" to be published in Analytical Bioanalytical Chemistry. This paper describes the development and validation of a method for the simultaneous analysis of nucleosides and nucleotides in infant formula using reversed phase liquid chromatography-tandem mass spectrometry.

  • 11 Mar 2013

    SPIFAN meetings at AOAC Mid-Year Meeting—Rockville, MD, USA

    Attended the 7th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

    The LC-UV method developed for the analysis of nucleotides in infant formula I developed was endorsed by SPIFAN Expert Review Panel as an Official First Action method (AOAC 2011.20)

  • 30 Sept 2012

    AOAC Annual Meeting & Conference—Las Vegas, NV, USA

    I attended the 126th AOAC Annual Meeting in Las Vegas. I attended the 6th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. The nucleotides method I developed was endorsed by SPIFAN Expert Review Panel as an Official Final Action Method (AOAC 2011.20).

    Many are fans of Las Vegas, but I can't say I'm one of them. It was attractive place for a night or two, but longer than that, the smoking, the incessant casino noises make this one of the least interesting places to visit.

  • 18 Jun 2012

    SPIFAN meetings—Rockville, MD, USA

    Attended the 5th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

    So busy, no time for personal travel.

  • 12 Jun 2012

    Instrument evaluation—San Francisco, CA, USA

    Visited two mass spectrometer instrument manufacturers to assess the equipment in person prior to purchasing. I'm fascinated at how these complex instruments are developed and manufactured. The engineering specifications and tolerances are extremely tight.

    Spent a day in San Francisco. I love this city, the food is almost as good as New Orleans and the Golden Gate Bridge is best seen on bike ride across.

  • 28 May 2012

    Instrument evaluation—Sydney and Melbourne, Australia

    Visited several mass spectrometer instrument manufacturers to assess the equipment in person prior to purchasing. There's some great instruments availble and I wish I could buy them all!

    Took opportunity to see the sights in Sydney and had a great dinner on the Rocks. Walking in centre of Melbourne during evening was pleasant with classical music piped through whole park.

  • 08 Feb 2012

    Paper accepted for publication

    Paper accepted for publication entitled "Analysis of 5′‑mononucleotides in infant formula and adult/pediatric nutritional formula by liquid chromatography: First Action 2011.20" to be published in Journal of AOAC International. This paper is the Official Method also published in AOAC Official Methods of Analysis.

  • 22 Nov 2011

    Paper accepted for publication

    Paper accepted for publication entitled "Determination of total potentially available nucleosides in bovine, caprine, and ovine milk" to be published in the International Dairy Journal. This paper reports the total potentially available nucleosides in bovine, caprine, and ovine milk analyzed through the sequential application of phosphatase, pyrophosphatase, and nuclease enzyme treatments prior to high performance liquid chromatographic analysis of released nucleosides.

  • 17 Sept 2011

    AOAC Annual Meeting & Conference—New Orleans, LA, USA

    I attended the 125th AOAC Annual Meeting in New Orleans. I attended the 4th stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. The nucleotides method I developed was endorsed by SPIFAN Expert Review Panel as an Official Final Action Method (AOAC 2011.20).

    I found New Orleans to be a unique city amongst places I have visited in America. The music and culture a quite different from elsewhere and the food was magnificent. I would rate New Orleans as my top food destination in America.

  • 11 Apr 2011

    6th International Symposium on MS Techniques—Manchester, England

    Attended the 6th International Symposium on MS Techniques and heard the latest work from some of the scientists using mas spectrometry in a range of disciplines.

  • 04 Apr 2011

    SPIFAN meetings at AOAC Mid-Year Meeting—Gaithersburg, MD, USA

    Attended the 3rd stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to dicsuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

  • 06 Nov 2010

    SPIFAN meetings—Gaithersburg, MD, USA

    Attended the inaugural SPIFAN Working Group meetings to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance. These meetings were held at AOAC headquarters and it was valubale time spending five days talking analytical methods and I learned a lot.

    I took some personal time and saw the museums and monuments of Washington DC.

  • 06 Oct 2010

    Vendor visit—Edmonton, Canada

    Spent time learning about vitamin A and vitamin D analysis by immunoassay.

    Edmonton was famous for having the largest mall in the world at one time. It had a ice-skating rink and roller-coaster indoors!

  • 25 Sept 2010

    AOAC Annual Meeting & Conference—Orlando, FL, USA

    I attended the 124th AOAC Annual Meeting in New Orleans. Attended the 1st stakeholder meeting of AOAC Stakeholder Panel on Infant Formula and Adult Nutrition (SPIFAN) and the Expert Review Panel (ERP) to discuss the current developments in methods of analysis for infant formula and reviewing and developing standards for global acceptance.

    The resort was something quite different from a regular hotel and because of the humidity I spent almost all of my time out of doors in the pool.

  • 19 Jul 2010

    Paper accepted for publication

    Paper accepted for publication entitled "Determination of total potentially available nucleosides in bovine milk" to be published in the International Dairy Journal. This paper reports the total potentially available nucleosides in seasonal bovine milk analyzed through the sequential application of phosphatase, pyrophosphatase, and nuclease enzyme treatments prior to high performance liquid chromatographic analysis of released nucleosides.

  • 02 Oct 2009

    Paper accepted for publication

    Paper accepted for publication entitled "A liquid chromatographic method for routine analysis of 5′‑mononucleotides in pediatric formulas" to be published in the Journal of AOAC International. This paper describes an RP‑HPLC method for the routine determination of supplemented 5′‑mononucleotides (uridine 5′‑monophosphate, inosine 5′‑monophosphate, adenosine 5′‑monophosphate, guanosine 5′‑monophosphate, and cytidine 5′‑monophosphate) in pediatric formulas and milk products.

  • 14 Sept 2009

    AOAC Annual Meeting & Conference—Philadelphia, PA, USA

    I attended the 123rd AOAC Annual Meeting in Philadelphia. This meeting marks the quasquicentennial, that is the 125th anniverary of AOAC International.

    Philadelphia is an important city in American history. I enjoyed spending a few hours visiting key landmarks where the nation of the United States of America was born.

  • 22 Sept 2008

    AOAC Annual Meeting & Conference—Dallas, TX, USA

    I attended the 122nd AOAC Annual Meeting in Dallas.

    Hotel was a short walk form the 6th Floor Museum; a sobering place.

  • 18 Sept 2008

    Laboratory—Columbus, OH, USA

    Visited a laboratory and learned about the method used for measuring total potentially available nucleosides.

  • 28 Feb 2008

    Paper accepted for publication

    Paper accepted for publication entitled "Liquid chromatographic method for the determination of lutein in milk and pediatric formulas" to be published in the International Dairy Journal. This paper describes the development and validation of a rapid method for routine compliance testing of lutein in pediatric formulas.

  • 17 Sept 2007

    AOAC Annual Meeting & Conference—Anaheim, CA, USA

    I attended the 121st AOAC Annual Meeting in Anaheim. This was my first AOAC meeting and I revelled in the excitement and enthusiam of the AOAC members for their association.

    Walked down the road to Disneyland but did not go in.

  • 12 Sept 2007

    Laboratory—Madison, WI, USA

    Visited a laboratory and learned about solid phase extraction technique with application to nucleotides.

  • 30 May 2007

    Paper accepted for publication

    Paper accepted for publication entitled "Determination of nucleotides and nucleosides in milks and pediatric formulas: a review" to be published in the Journal of AOAC International. This review summarizes the analytical techniques used to date in the analysis of nucleospecies in bovine and human milks and infant formulas.

  • 01 Aug 2006

    Paper accepted for publication

    Paper accepted for publication entitled "Development and application of a liquid chromatographic method for analysis of nucleotides and nucleosides in milk and infant formulas" to be published in the International Dairy Journal. This paper describes the development and validation of a method for the simultaneous determination in milk of the 5′‑mononucleotides and their corresponding nucleosides. This technique was been applied to the analysis of bovine and human milk, a range of commercial bovine milk-based infant and follow-on formulas, a seasonal study of skim milk powders and an assessment of alkaline phosphatase influence on nucleotide retention.

  • 03 Jul 2006

    Promotion—Waitoa, New Zealand

    I have been promoted to Research Scientist from my previous role as Research Associate.

  • 16 Apr 2003

    Paper accepted for publication

    Paper accepted for publication entitled "Use of natural abundance 15N DEPT NMR to investigate curing of urea-formaldehyde resin in the presence of wood fibers" to be published in Magnetic Resonance in Chemistry. This paper describes the use of natural abundance 15N NMR using a DEPT pulse sequence to follow the curing of urea-formaldehyde resin in the presence of wood fiber, fiber extracts and acid or base.