A NEW product range of isotopically labelled internal standards for toxicology analysis by LC-MS/MS and GC-MS/MS including the common Benzodiazepines.

¹³C and ¹⁵N internal standards enable the accurate determination of the analyte of interest and provide the advantage of:

• Co-elution with analyte
• Correction for sample to sample matrix variation
• No loss of deuterium on the instrument or in solution
• No detectable unlabelled material
• Many offered in ready to use certified solutions

Please note that many of these products can be considered Controlled Substances and may require licensing with the appropriate authorities prior to shipment. Please contact us for further information regarding licensing and shipment.

Please see the reference materials listed below or enter a product code, CAS number, description or other keywords in the Search field below. If you are unable to locate the reference standard or the format you require, please contact us with your requirements, we will be delighted to help.