Waste Container for Trident NP Nitrate and Phosphate Tester Like many aquarium additives and cleaning solutions found in your home, the Trident NP reagents and waste require some precautions when handling them. This container is made from HDPE Class 2 Plastic, which is one of the materials recommended for the Trident NP waste container (glass containers are also acceptable). Instructions Add neutralizing mixture before use. Proper disposal procedures are required. Full Trident NP Waste Container instructions can be found by scanning the QR code on the container's label. What's Included? 1-Gallon Trident NP Waste Container Waste Container Cap