General Hydroponics - industry leader has been supplying premium products to universities, research institutions and gardeners worldwide for over 30 years. Test kit with test vial offers wide spectrum testing (pH 4.0 to 8.5). This concentrated solution requires only 5 drops per test.

Details:
Base Size: 1 Ounce

* Additional options/sizes may be available. Please check 'Available Options' below. Option/Size upgrade prices already include additional shipping charges.