34S stable isotope analysis

Quantitative mineralogical analysis by X-ray powder diffraction (XRD) on bentonite samples to identify and quantify the concentration of occurring minerals. The analysis is performed according to EN 13925. The results of the analysis are expressed as percentages, for example: % of Smectite, % of Quartz, % of Calcite, % of Opal, % of Feldspar. The uncertainty of the measurement is 10–20%.

Optical emission spectrometry (OES) is used to determine the chemical composition of a plate-like copper sample. The elemental composition results are expressed as mass percentages.

Analysis to screen a material for the presence of brominated fire retardants (BFRs), including polybrominated biphenyls (PBBs) and polybrominated diphenyl ethers (PBDEs). The test is performed with a pyrolysis gas-chromatography mass spectrometer (py-GC-MS) according to the ISO 7270-1 standard. The sample is pyrolyzed, which is followed by separation and identification with GC-MS. The obtained pyrogram is then compared to a blank sample that does not contain any brominated fire retardants. We also offer the analysis for electrotechnical products as per IEC 62321-6. Please ask our experts for more information about this option.

UPLC-MS/MS analysis for determining the melatonin content in dietary supplements. According to Regulation (EU) No 432/2012, melatonin supplements may be marketed with the following health claims: "Melatonin contributes to the alleviation of subjective feelings of jet lag." The claim can be used if the product contains at least 0.5 mg of melatonin per portion., "Melatonin contributes to the reduction of time taken to fall asleep." The claim can be used if the product contains at least 1 mg of melatonin per portion..

Determination of starch in food with a spectrophotometric method.

Determination of vitamin B7 (biotin) in food with an HPLC-UV-VIS method, or in supplements with a UPLC-MS/MS method. According to Regulation (EU) No 1169/2011, the biotin content of food products may be included in the nutrition declaration if it is present in significant amounts. The daily reference intake for biotin is 50 µg, and biotin content can be declared if the product contains at least: 7.5 µg/100 g or 100 ml in products other than beverages (15% of reference intake), 3.75 µg/100 ml in beverages (7.5% of reference intake), 7.5 µg per portion if the package contains a single portion (15% of reference intake). Foods that contain at least the above amounts of biotin can be labeled with the nutrition claim "Source of biotin." Additional nutrition and health claims related to vitamin B7 can be applied in accordance with Regulations (EC) No 1924/2006 and (EU) No 432/2012.

Determination of certain aromatic amines derived from azo dyes in accordance with the standard EN 14362-1.

Rutherford Backscattering Spectrometry (RBS) can be used to measure the composition of solid samples quantitatively at the surface as well as depth profiling. RBS is used for the analysis of heavy elements and can be combined with ToF-ERDA when lighter elements also need to be analyzed. Elements with similar mass can be difficult to differentiate.

Benzoic and sorbic acids can be used as preservatives in various foods. Regulation (EC) No 1333/2008 regulates the foods in which benzoic and sorbic acid can be used as additives and specifies the maximum levels allowed. This HPLC-UV method can be used to quantify amounts of benzoic and sorbic acids or corresponding sodium and potassium salts.