กระดาษวัดค่า pH ช่วง 4.0-5.6 แบบม้วน, ยาว 5 เมตร / pH Indicator pH 4.0-5.6 range, reel 7mm x 5m

UNIVERSAL INDICATOR STRIPS (NON-BLEED)

The indicator pads on these environmentally friendly strips are prepared as a non bleed system therefore the resultant colour change remains far longer and readable until the pad is dry. Each strip is long enough to protect the user from the test solution as the test pads are at the extreme end of the strip. For accurate pH readings, these strips use 4 different indicator pads and the colours on the enclosed colour chart match the colour and position of each pad on the strip. This allows these strips to provide a rapid method of measuring the pH of a solution while producing high quality results each time. Strips with the non-bleed system provide precise pH values as the different colours do not mix at the point of testing.