Very similar to Solvita Compost #2261, the Manure Kit measures the volatile ammonia (NH3) content of compost/manure. It detects a range from 100 - 30,000 ppm and may be read from 1-24 hrs. Useful for estimating losses of nitrogen, and safety conditions in barns where manure bedding packs are.

"6-pk" includes 12 NH3 tests, 6- "incubation" jars. Also as refill available.