7010090 pH Test Paper, Narrow Range, Booklet, Phenol Blue, pH 3.2-5.6, 7mm Width, 70mm Length (Pack of 200)

الوصف

Various types of indicator papers cover a wide pH range to allow for good accuracy of determining pH value of a solution. These narrow range Test papers offer high sensitivity and sharp color change. Narrow pH unit graduation: 0.2-0.4 (Congo red: color change to red indicates within specified range only). dip the indicator Test strip in solution and Compare to the color Chart on the container.