- Fullerton, California, United States
- US $2.42
- Jan 30th
160 Universal Indicator pH 1-14 Litmus Paper Test Strips Water Saliva Soil Urine Fast ship from CA, USA with tracking number The indicator paper set with distinct color PH scale from 1 to 14 for result comparisons: 1-3 indicates a very acidic substance, 4-6 indicates an acidic substance, 7 indicates neutral, 8-11 indicates alkalinity, 12-14 indicates a very high level of alkalinity. Grow healthy plants knowing the pH level of your garden soil!