Potassium permanganate, basic (~5 g/L) TS, Validity: 12 months

Potassium permanganate, basic (~1 g/L) TS, Validity: 12 months

Potassium permanganate/phosphoric acid TS, Validity: 12 months

Potassium sulfate (0.1 g/L) TS, Validity: 12 months

Potassium sulfate (174 mg/L) TS, Validity: 12 months

Potassium tetraoxalate standard TS, Validity: 12 months

Potassium thiocyanate (200 g/L) TS, Validity: 12 months

Pyrogallol, alkaline, TS (A+B), Validity: 12 months

Quinaldine red/ethanol TS, Validity: 24 months

Quinaldine red/methanol TS, Validity: 24 months