These indicator strips read pH from 0 - 14 pH. A must if you wish to balance the pH of Moisturisers, Shampoo and Liquid soaps.
This pack contains 100 pH strips - each one has a much more precise scale for more accurate measurement.
To use:
1. Dip Strip into batch for 0.5 second
2. Shake off excess liquid
2. Compare and match all four colour squares at pH 7 on chart (if you want neutral pH)
3. Adjust formula with Citric acid or other agent
4. Retest to check
5. Note down exact change to formula to future batches
