Reference Standard And Working Standard. 5 7 2 use before working standard maximum once in a year or 6 month for less stable products. 5 7 1 for development of working standard by hplc uv auto titrator three analysis shall be performed using reference standard.
A working standard i e in house or secondary standard is a standard that is qualified against and is used instead of the reference standard 16. Temperature storage dispatching conditions shall be checked physically. The working standard is qualified against the pharmacopeial reference standard or certified reference standard.
Source of working standard and working standard solvent.
Temperature storage dispatching conditions shall be checked physically. Before reprieving any reference standard working standard impurity standard etc. Average result of comparative study shall be used for routine analysis. Temperature storage dispatching conditions shall be checked physically.
