Ultimate Discount Aquatics pH Calibration Fluids

pH Calibration Fluid pH 7.01
pH 7.01 buffer. Allows for better accuracy than pH 7.0 buffer, although this level of accuracy is not really needed for aquarium applications. Comes in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enough fluid for a complete calibration (about 20 ml) and is intended to be discarded after use.

Price: £1.20

pH Calibration Fluid pH 10
PINPOINT High-Precision pH Calibration Fluid pH 10.000 +/- 0.002

Comes in single-use plastic envelope packets, and they are extremely accurate and field portable. Each packet contains enough fluid for a complete calibration (about 30 ml) and is intended to be discarded after use.

Price: £1.20

pH Calibration Fluid pH 4
PINPOINT High-Precision pH Calibration Fluid pH 4.000 +/- 0.002

Price: £1.20