special test strips
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1) Resolution is 0.2-0.5 pH unit
2) Colours of the individual colour fields cannot run into each other. This allows a more precise comparison the colour scale.
3) The plastic strips protect fingers from contact with the test solution.
4) Papers are non-bleeding so the test samples are not contaminated by the indicator dyes.
5) PH range:
0-2.5, 0.5-5.0, 3.8-5.4, 4.0-7.0, 4.5-9.0, 5.4-7.0, 5.5-9.0, 6.2-8.4, 8.2-10.0, 9.5-13.0