Test 10 different water quality parameters with this Backpack Lab from Hanna. Includes chemical test kits to conduct 100 tests each for acidity, alkalinity, carbon dioxide, dissolved oxygen, hardness, nitrate, and phosphate, a pHep 4 pH/Temperature tester, a DiST5 conductivity/TDS tester, and a secchi disk for making turbidity measurements. Includes 72-page teacher’s guide, lab activities for each parameter, laminated field test procedures, overhead transparencies, and vocabulary terms. All materials fit inside the supplied backpack for convenient transport to the field.