relana® Position Papers
The reliability and validity of analytical results are of highest importance for all stakeholders of the food chain. Therefore, analytical laboratories have to meet highest levels of appropriate accuracy and care.
On the other hand, laboratories have to face analytical challenges depending on the applied methods and procedures, and the individual, local realities and conditions (equipment, integration into established process chains, constraints associated with existing space at the laboratory etc.). This has a huge impacte on laboratories' routines.
This is a "Herculean task". And this is the reason why a standardised method might vary in detail from laboratory to laboratory.
The outcome is an analytical compromise varying from laboratory to laboratory.
relana® Position Papers take firm positions related to the necessary analytical compromises.
This communication note refers to the evaluation of 1,4-dimethylnaphthalene (1,4-DMN) findings in food products.
relana® communication note 21-03: 1,4-dimethylnaphthalene (1,4-DMN) findings in food products
This communication note refers to the assessment of ethylene oxide and its degradation product 2-chloroethanol.
relana® communication note: Ethylene oxide and 2-chloroethanol
This communication note summarises the findings from a relana® internal laboratory comparison with regard to the analysis of pyridate according to the current residue definition.
Position Paper No. 19-03: Differing results of competent laboratories: reasons and what is “common”?
This position paper refers to possible reasons and influences on differing analytical results (although no or only few differences are expected).
This position paper refers to the influence of sampling (outside the laboratory) on the analytical result and the corresponding deviations of analytical results.
This position paper is about substances (pesticides, contaminants, biocides a.o.) showing positive results in laboratory samples altough these substances were not applied deliberately.
This position paper refers to the preparation and homogenisation of food samples (fruits and vegetables) for residue analyses taking – demonstrated by 5 selected products.
This position paper refers to the formation of phthalimid (PI) out of phthalic anhydride (PSA) during gaschromatografic analysis, and corresponding impacts on the interpretation of results.
This Position Paper is related to to the quantification of Phenoxycarboxylic acids (“Acidic Herbicides”), which require an additional hydrolysis step in certain cases.
This position paper is related to the reliable analysis of Ethephon in processed (dried) food products.
Position Paper No 16-03: Phthalimid part 1 – About the problem of the new residue definition of Folpet
This position paper is related to the new residue definition of Folpet (reg. (EC) no 396/2005), which now includes the metabolite Phthalimid (PI).
This position paper is related to pesticides which are possibly challenging for “Multi-Residue-Method”-analyses.
This position paper is related to the residue analysis and the corresponding reporting of levels of the fungicide Guazatine on citrus fruits and other crops.