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Spirits Analysis

Our general certificates of analysis show the determinations of alcoholic strength, acidity, esters, methanol and the higher alcohols. These certificates are often augmented with calcium and magnesium levels using ion chromatography plus a range of metals including transition metals and heavy metals.

Elemental analysis is accomplished using inductively coupled plasma mass spectrometry (ICP-MS) which facilitates direct injection determinations down to sub parts per billion levels with no artifact generation or loss of volatile metals as was the case with the previous but now outmoded atomic absorption techniques.

Matured spirits analysis of, essentially, non volatile oakwood derived congeners is by HPLC-Variable wave length UV detection or by gas chromatography-mass spectroscopy (GC-MS), while determination of phenolic compounds (peat derived analytes) is by liquid chromatography with specific fluorescence detection.

Analysis of urethane (ethyl carbamate) and nitrosodimethlyamine (NDMA) is accomplished using highly sensitive specific analyte GC detectors: single ion monitoring GC-MS and the thermal energy analyser (GC-TEA). Three TEA machine detectors are in use at Tatlock and Thomson and are maintained to the highest level of accuracy.

Other spirits analysis include the determination of migration plasticizer phthalate compounds (GC-SIM-MS), trace sugar analysis (LC-Ion chromatography) and determination of trace sulphur compounds (GC).

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