Do I need to buy the primary ChromaDex™ Standard, or can I buy the reagent grade?
A. What separates one standard from another is it’s purity along with the level of characterization and testing that has taken place on that batch of reference material. Therefore, a primary standard is usually has a higher purity and has more documentation provided with it. On the other hand, the secondary or reagent grade includes less documentation. There isn’t any hard and fast rules as to which category of standards you should use. However, the quality of the standard bought should reflect the use for which it is intended. Therefore, high-end R&D testing should use primary standards. For process development/production testing, perhaps a secondary or reagent grade standard can be used. If you are in doubt call customer services and ask our qualified personnel at 949-419-0288.
