When you order the WaterTest test kit, we ship you the test kit to complete per the instructions. You must follow the instructions and ship the completed test kit to the water test lab. The professional laboratory analyzes your water and sends you a water analysis report within 10 to 15 days. Kit consists of a 500 ml Bottle. The National Testing Laboratories WaterTest is a limited test package for 27 contaminants. Turn-around-time: Test results are typically completed and mailed within 10-15 business days from the date samples are received at the laboratory. Return postage is included for mailing the kit back to the laboratory. The National Testing Laboratories, Ltd. Network of certified laboratories performs drinking water analysis for customers worldwide according to USEPA and standard methods. The National Testing Laboratories water test includes a check for: Inorganic Chemicals, Metals: Aluminum, Arsenic, Barium, Cadmium, Calcium, Chromium, Copper, Iron, Lead, Magnesium, Manganese, Mercury, Nickel, Selenium, Silver, Sodium, Zinc, Inorganic Chemicals, and Physical Factors: Alkalinity, Chloride, Fluoride, Nitrate as N, Nitrite as N, Sulfate, Hardness pH (Standard Units), Total Dissolved Solids, and Turbidity (Turbidity Units). The purchase of the test kit includes the test kit, the return postage to send the test kit back to the lab from within the US, the laboratory analysis, and the laboratory report.