Measuring range (from pH 1 to pH 14 with color graduated scale):
1-3 shows a very acidic substance
4-6 shows an acidic substance
7 shows neutral
8-11 shows alkalinity
12-14 shows a very high alkalinity
Immerse the test strip into the solution for 15 seconds to be tested, remove and contrast with the color chart, you get PH values
Test sheet amount: 80 strips
Size: 7 * 4.5 cm (L x W)
Package including:1x 80 PH 1-14 Test paper