1 set of 80 ph test strips (ph 1–14) and color charts.
The ratio is 1-14: 1-3 indicates a very acidic substance, 4-6 indicates an acidic substance, 7 indicates neutrality, 8-11 indicates alkalinity, and 12-14 indicates a very high basicity.
It can be used to measure ph values in many everyday substances such as liquid soap, lemon juice, milk, purifiers, wetlands, saliva, urine, sweat, etc.
