Hardy Diagnostics Phosphate Buffer with MgCl 2 is used to prepare dilutions of samples for examination of water, dairy products, foods and other materials. Phosphate buffer with magnesium chloride meets or exceeds requirements for APHA, EPA water and wastewater methods, and the dairy industry. The pH is 7.2 plus or minus 0.2. Each lot is meticulously tested for pH, sterility, fill volume, and toxicity. Vials are made of clarified polypropylene for clear viewing. Also offers large space for writing of sample identification. Polypropylene is recyclable. Do not ingest, inhale, or allow to come into contact with skin. This product is for laboratory use only. It is to be used only by adequately trained and qualified laboratory personnel. The Hardy Diagnostics manufacturing facility and quality management system comply with cGMP's and have achieved ISO 13485 certification as a medical device manufacturer.