Woods End's widely-recognized test for determining the compost Maturity Index. The easy-to-use test utilizes two gel-systems that react rapidly to carbon dioxide and ammonia gas, changing color in proportion to the concentration in the compost material. The results are read after 4-hrs exposed to the compost in a special incubation jar. A chart is used to determine the index from the two independent readings.

For fast, reliable measurement of CO2-respiration and ammonia volatization in compost products. A World-Wide Accepted Standard in Compost Testing.

"6-pk" includes 12 tests (6 CO2 + 6 NH3) and 6 test jars.

Users may order a refill kit (see #2262) to refresh the kit for 4 uses before new jars would be purchased.

Test kit required by: WA-DOT, Caltrans and TX-DOT for sales of compost. Used in Europe for Eco-Label, Denmark and Sweden EPA.

For accurate reading, we recommend the Solvita Digital Color Reader (item #100-S).