Pocket-sized, lightweight vial
No color chart necessary
100 test strips
Phenolphthalein pH Test Paper Indicator pH 8.2 – 10.0
This does NOT come with a color chart. Phenolphthalein test paper will turn pink when the ammonia in solution is from 3-5PPM. Find ammonia gas leaks by wetting one end of the test paper with distilled water and then holding it near the suspected leak. If the color change is immediate, get a protective mask with an air supply.