Sodium hydroxide : sodium thiosulfate (50:2.5) % (w/v) in aqueous solution for Kjeldahl nitrogen analysis using copper catalyst
Supplier: Ricca Chemical
Sodium Hydroxide-Thiosulfate, for Kjeldahl Nitrogen Analysis using Copper Catalyst, Container: natural poly, 50%-2.5% (w/v), Size: 500ml
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Sodium hydroxide : sodium thiosulfate (40:2.5) % (w/v) in aqueous solution for Kjeldahl nitrogen analysis using mercury catalyst
Supplier: Ricca Chemical
APHA and ASTM for organic nitrogen.