Johnson Test Papers Ltd products

No matter what your scientific qualification or expertise, pH measurement with our non-bleeding indicator strips is simple and has been provided assurance for qualified persons since 1938. The desired pH value can be tested with our simple and rapid pH Indicator Non-bleeding Strips that ensure precision and quality.

Calibrated batch to batch with accurately printed colour charts Comparator pH Strips are extremely simple to use and measure pH with. Robust results and maximum quality is strengthened by our ISO 9001 certification and high quality raw material. Our Comparator Strips have been a global standard for many years. The Comparator brand consists of a product portfolio differentiated by a range of pH values and incremental steps between 0.2 - 0.5 pH units. These Comparator Strips are manufactured to have a unique single pad system of impregnated paper, which allows the resultant colour change to remain up to 5 times longer when compared to the standard comparator papers.