3rd edition of procedure on estimation and expression of measurement uncertainty in chemical analysis available in English

When the result of a chemical analysis is presented in an analytical report it is recommended that it should always be reported as a numerical result. For the result to be complete, the measurement uncertainty of the analysis should also be included. In many cases, a result can be very hard to interpret unless accompanied by its uncertainty.

In this updated version of the procedure, guidance on how to handle bias / systematic errors in relation to measurement uncertainty is included. The principles described in Nordtest TR 537 for environmental analyzes have been introduced in the NMKL procedure and examples showing how these calculations are to be performed have been added. Whether one can or should correct for systematic errors is a complex issue, and a new section has been added to explain his. Additionally, minor restructuration and update of references have been undertaken.

A scandinavian version of this 3rd edition will follow.

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New method for determination of sodium by capillary electrophoresis in foodstuffs

NMKL method No. 203 describes the determination of sodium content in foodstuffs by capillary electrophoresis (CE). The CE method is quick and needs both very little sample handling and low amount of solvents. It is applicable to various matrices such as bread, vegetables and meat products. The salt content is calculated from the sodium content with the formula: salt = 2.5 x sodium.

Sodium is extracted from sample and analysed by CE with diode array detector. The minimum content of sodium that can be detected and quantified is 0.03 g/100 g.

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Sensory quality control method for drinking water has been updated

NMKL Method 183 describes the sensory quality control method for drinking water. The Finnish / English version of the method has been updated and now includes also test setup and parameters for the appearance of drinking water. Furthermore, the references have been updated. Update of the Norwegian / English version is expected to be ready early 2018.

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Sensory analysis of meat and meat products

This guide (NMKL Procedure No. 29) is intended for objective sensory analysis of meat and meat products and is focused on the matters to which especial attention must be paid in sensory analysis of meat and meat products. The procedure is elaborated in a project group under the lead of Camilla Bejerholm, Technological Institute, Denmark.

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New method for determination of isotope dilution in foodstuffs

NMKL method No. 202, "Methylmercury: determination by isotope dilution GC-ICPMS in foodstuffs", describes the quantitative determination of mono-methylmercury (MMHg) (10-5000 µg/kg dry weight) in mainly marine biota samples. The principle of the method is that the sample is spiked with an appropriate amount of Hg isotope-enriched MMHg and extracted. After derivatisation the sample is analysed using GC-ICPMS. The GC separates the different mercury species before MMHg is atomised and ionised in the high temperature of the ICP. The ions are extracted from the plasma, and in a mass spectrometer the ions are separated by their mass/charge ratio.

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2nd edition of procedure on control of microbiological media is now available in both Scandinavian and English language

NMKL procedure No. 10 describes the control programmes and methods which should be applied when preparing microbiological culture media in a quality-assured laboratory. The procedure includes both solid and liquid culture media in the following categories: purchased, ready-to-use culture media; culture media prepared from commercially available dehydrated media; culture media prepared from the individual components.

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New method: Fat by LF-NMR

Fat. Determination in fish, fish feed and fish meat by LF-NMR (NMKL 199, 2014).

The method is recently published. It is validated collaboratively in two trials and compared against a Soxhlet method. The referee and organiser of the studies is Dr. Päivi Teivainen-Lædre, Skretting Aquaculture Research Centre.

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New technique for identification of bacteria

National Veterinary Institute, Sweden arranges a Workshop on MALDI-TOF analysis

27 May 2014, from 10:00-16:00 at the National Veterinary Institute, SVA, in Uppsala.

Do not miss this opportunity to learn about this new revolutionary technique.

At the workshop, you will learn about what MALDI-TOF is, how it works, field of application, procedures and databases. How this chemical technique can be used for rapid microbiological examinations.

MALDI-TOF is a matrix-assisted laser desorption/ionisation time-of-flight mass spectrometry (MS), which offers the possibility of accurate, rapid, inexpensive identification of isolated bacteria.

Registration Fee:  NOK 2.000,-

Registration to This email address is being protected from spambots. You need JavaScript enabled to view it. by 14 May 2014.

Attachments:
Download this file (invitation to NMKL SVA workshop on MALDI-TOF.pdf)invitation to NMKL SVA workshop on MALDI-TOF.pdf[Program SVA Workshop on MALDI-TOF]

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NordVal International

NordVal International is an independent third party that evaluates the quality characteristics and applications of alternative chemical and microbiological methods in the analysis of food, water, feed and environmental samples.

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