The shelf life is 3 years and samples of all manufactured chemicals are archived at Biochrom. Each bottle is marked with a manufacturing date and control number which should be cited if there is any query. Should you need to make a query please send an email to AAA Support.
If this does not answer your question or solve your problem, then please contact us at support@biochrom.co.uk detailing your question or the problem you are experiencing. Please list if relevant the instrument, software and version numbers you are running, and enclose any relevant data files, etc.