pH Test Packed in box and carded; Indicator: Bromthymol Blue solution Standards 6.4, 6.8, 7.0, 7.2 and 7.6; Time of test: Less than one minute Ammonia Test Reagent A Rochelle Salts; Reagent B Nesslers Reagent; Standards: .025, .1, .25, 1 and 2 ppm; Time of test: Less than one minute; Ideal for saltwater and freshwater use; Measures total ammonia (NH3 + NH4) Nitrite Test Reagents: Reagent A Sulfanilic Acid Reagent B Naphthylethylene diamine di HCI; Standards: .1, .25, .5, .8 and 1.0 ppm; Time of test: Three minutes for full color development