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pH test paper provides a fast and economical method of pH measurement. For most solutions it is only necessary to dip a short strip of test paper in the solution for a second or two. Then shake off the excess fluid and match the color of the wet test paper with its color chart and read off the values. Available on a continuous roll which you can tear off what you need from a plastic dispenser or individual test strips that come in a vial.

1) Resolution is 0.5,0.3 or even 0.2 pH unit
2) 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