Chrominfo

High purity, ready and cheap availability, stability, non-toxicity, low hygroscopicity, and high equivalent weight are the properties of a g...

Standards are substances that contain a known quantity of a drug and can be used to calculate unknown quantities or calibrate analytical ins...

The sodium hydroxide is cannot be used as a primary standard, mainly because NaOH is hygroscopic and absorbs carbon dioxide (CO2) from the a...

A primary standard is a highly pure reagent with a large molecular weight that can be easily weighed and used to initiate a chemical reactio...

The major difference between a primary standard solution and the secondary standard solution is that primary solutions have higher purity an...