Test has everything to get qualitative results

Simplified plant tissue field tests help you determine whether your growing plants are receiving adequate amounts of nitrates, phosphorus and potassium from the soil. Requires just one diced green plant tissue sample that’s been saturated in an extracting solution for each of the three N-P-K tests. Provides results as "Abundant," "Adequate" or "Deficient." Includes 50 tests per N-P-K factor.

NOTE: Requires special handling due to DOT regulations. Additional shipping charges will apply. Cannot be shipped by air.

WARNING: Reproductive Harm -

Requires special handling due to DOT regulations. Additional shipping charges will apply. Cannot be shipped by air.

Not for sale in Alaska, Hawaii

California Residents: Click here for Proposition 65 Warning.