$10.76 (as of January 21, 2018, 10:01 pm) & FREE Shipping. Details $9.98

Fill a test-tube halfway with nutrient
Add a few drops of pH Test Indicator
Observe the coloration of the liquid in the test vial. Use 3 drops per 5mL of solution

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SKU: 0S-715Y-TRR9 Category: Tag: