These pH test strips are in the winemaking range. Since the test range is so narrow, these will be more accurate than the universal pH test strips. Soak a test strip in the wine and immediately compare the color to the scale on the vial to determine the pH level.
100 test strips per vial.

California Proposition 65

Proposition 65 Warning: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.