What kind of standard can be used to calibrate my Optocomp luminometer?
A standard is available from MGM Instruments for this purpose. The standard contains a very small amount (less than 10 microcuries) of Tritium. Tritium has a half-life of about 12 years, so the activity of the standard must be corrected for decay of the Tritium. A decay chart is provided with each standard for this purpose.