PH test Papers 1-14 (box of 5 books)

A strip is immersed so that all colour zones are wetted, enabling coloured solutions to be accurately tested if required.

£4.99

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Description

A strip is immersed so that all colour zones are wetted, enabling coloured solutions to be accurately tested if required.

An invisible hydrophobic barrier prevents liquid reaching the fingers.

The indicator zone (unprinted field) is in the centre of the strip, the comparison fields being above and below same.

5 books of 20 papers

Additional information

Weight 0.03 kg

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