General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers prefer our pH Test Kit to expensive electronic meters because of its reliability and ease of use, which are important factors when the health of a valuable crop is at stake. Use 3 drops per 5ml of solution.
Delivery
All orders within the USA are shipped via UPS at the following rates (you will have the option to select your rate when placing an order):
- Free Standard (1-5 business days) — Free (orders over $100)
- Standard (1-5 business days) — $5.95
- Next Day Air (1 business day) — $18.95
