Traditional pH indicator test papers, supplied on a 4,8 metre roll, consisting of high quality filter paper impregnated with indicator and mixed indicator solutions then dried and cut to size.

• Roll format are easy to use and most common ranges are available in a refill format
• Quality assurance - tests are checked and calibrated against certified buffer solutions
• Wide and narrow pH ranges available

* no colour scale card supplied

** pack of 3×100 strips