Humus is organic matter which has decomposed to where it can contribute nutrients for plant uptake.
Humus Test Kit has a 10 to 15 day lead time and will ship separately from other items ordered.
|Model||Method||Range & Sensitivity||Reagent System||# of Tests|
|STH-1||Color Chart, filtered extraction||Low to high in 5 increments, 1 1/2 - 8%||EDTA||50
Sorry - This item has been discontinued.
511201 Model STH-1, Humus Test Kit (5#) $123.40