We offer sle also deals in a number of environmental test kits used to study the environment parameters & their composition air pollution test kit features 1 study the effect of so2 on plant life 2 this kit provides instruction, apparatus and materials to experiment with plant seedlings exposed to a sulfur dioxide atmosphere at a known concentration which produces an effect on plant life that can easily be observed. Our range of test kits include:- • soil test kit • water test kit • air quality test kit.