Nitrogen Primary Standard, set of 3

Product #: 2277800
USD Price: $163.00
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Use this set for checking accuracy of crude protein tests and digestion recovery efficiency in Total Nitrogen and TKN methods. Set of three 25-g standards: Ammonium p-Toluenesulfonic Acid (Ammonium PTSA), Glycine PTSA and Nicotinic Acid PTSA.