Nicotinic Acid p-Toluenesulfonic Acid, 25 g

Številka izdelka: 2278124
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(Nicotinic Acid PTSA) Protein-TKN standard: 4.743% N, 29.64% crude protein. For checking accuracy and digestion recovery in Total Nitrogen and TKN determinations. 25 g bottle. See 2277800 for the complete set of three standards with increasing resistance to digestion.

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