Jonathan Green’s easy to use Soil pH Test Kit determines pH levels in just five minutes. The kit includes test tube， powder and one pH range card to indicate the results. It is important to use either distilled water or rainwater when performing this test in order to get accurate pH readings. Each order has 10 tests included in the package Easy to use kit determines soil pH in five minutes All that is needed is a soil sample and distilled water Includes pH color chart and full instructions Jonathan Green carries a full line of products for help you raise or lower your soil’s pH Paper Made in USA Your security is our number one concern