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pH 4 Buffer 250ml

pH buffer solutions are used to calibrate pH meters to keep them reading accurately.

First adjust your pH pen in buffer 7, then in buffer 4. When it reads correctly in both buffers you know that your pH pen is reading accurately.

£3.50

pH buffer solutions are used to calibrate pH meters to keep them reading accurately.

First adjust your pH pen in buffer 7, then in buffer 4. When it reads correctly in both buffers you know that your pH pen is reading accurately.

Weight 0.25 kg

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