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pH 1-14 Color chart in each pack. Litmus Paper test strips change color within 2-3 seconds, to be matched with the pH scale color chart
Neutral when the PH value is equal to 7；acidity when the PH value is greater than 7；Alkaline when PH value is less than 7
The test strip color changes must be matched with the pH scale color chart within about 15 seconds
Use rangePH test, amniotic fluid test, water quality test, cosmetic test, soil test, fruit test,etc.. PH 1-14 color chart in each pack
Instant results. This is only for testing the pH level of the water and not to be consumed. Imported Quality high range
