Perfect - Easy to follow the guide for a 1st timer
These easy to use strips give a basic indicative pH for soaps, cosmetics and any other solution.
Each booklet comes with its own colour chart printed on the inside of the booklet.
- Immerse a strip into the test solution for up to 2 seconds and then remove.
- Shake of excess liquid
- Compare the colour produed on the strip with the colour chart within 5 seconds to determine pH of the solution
Do not store strips where they are likely to be exposed to acid or alkaline gases or vapours.
Work exactly as described. Easy to use.
Does what they should
Seem to work well. The colours do bleed a wee bit so don't always give a clear indication, have to hold the strip a certain way and only very slightly dip into solution.