Buffer solutions, pH 4,00

Buffer solutions contain citric acid 1 H₂O (11,768 g); sodium hydroxide 50% (6 ml); hydrochlorid acid 35% (3,96 ml); preservative 1% (5 ml) and water (1 l).

pH (25 to 40 °C): 4,00 +0,01
pH (20 °C): 4,00 ±0,02
pH (15 °C): 4,00 +0,01
pH (10 °C): 4,00 +0,02
pH (5 °C): 4,00 +0,04
pH (0 °C): 4,00 +0,05

: NIIST traceable.

Environmentally Preferable:

APPC272168.1209_TDS_EN

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