General Hydroponics pH Test Indicator 8 oz
$8.61 $10.76
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. Use 3 drops per 5 mL of solution.
$8.61 $10.76
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. Use 3 drops per 5 mL of solution.