For ponds and aquariums: API Ammonia Aquarium Test Strips are the quick and accurate way to test for the presence of ammonia. This kit reads 0-6 ppm of ammonia. Desiccant lined tube, with snap tight cap, provides maximum moisture protection for accurate results. API Ammonia Aquarium Test Strips Features: Highly precise color charts. Dip directly into aquarium, no separate vial needed. Includes information on how to correct unsafe water conditions. 25 strips. For fresh and salt water. Test Nh3 and Nh4.