The Bitter Fit Test Kit offers qualitative OSHA-compliant fit testing for disposable and reusable dust and mist respirators

Gemplers reusable

This battery disconnect stops battery drain and reduces the danger of fire or explosion in stored vehicles

A stronger alternative to plastic that won’t fade

LaMotte Macronutrient Plant Tissue Test, N-P-K 1/2" 1 The Bitter Fit Test KitSimplified 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 thats 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.