Sodium nitrite (50 g/L) TS, Validity: 12 months

Sodium nitroprusside (8.5 g/L) TS, Validity: 6 months

Sodium salicylate (11.5 g/L) TS, Validity: 12 months

Sodium tetraborate (10 g/L) TS, Validity: 12 months

Stannous chloride AsTS, Validity: 12 months

Stannous chloride TS, Validity: 12 months

Sulfamic acid (5 g/L) TS, Validity: 12 months

Sulfosalicylic acid (175 g/L) TS, Validity: 12 months

Sulfuric acid (~10 g/L) TS, Validity: 24 months

Sulfuric acid (~100 g/L) TS, Validity: 24 months