Would you like to use our Product Configurator tool to configure this product before ammonia test strip it to your cart? If not, you may add it directly to your cart. Suitable for both lab and field testing, Hach Test Strips are easy to use and easy to read. Its presence in raw surface waters usually indicates domestic or agricultural pollution. Ammonia test strip certain levels, it is toxic to fish. Contains 25 tests. Sample Container, mL, PK.