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pH__
1.9
2.1
3.1
3.5
4.7
6.5
7.9
8.9
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Components
CH3COOH (87 ml glacial), HCOOH (25 ml 88%) to 1 L with H2O__
HCOOH (25 ml 88%) to 1 L with H2O
Pyridine (5 ml), CH3COOH (100 ml glacial) to 1 L with H2O
Pyridine (5 ml), CH3COOH (50 ml glacial) to 1 L with H2O
Pyridine (25 ml), CH3COOH (25 ml glacial) to 1 L with H2O
Pyridine (100 ml), CH3COOH (4 ml glacial) to 1 L with H2O
0.03 M NH4HCO3
(NH4)2CO3 (20 g/L solution)
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