We ship to USA only. See larger pH Paper photo   4.5 to 7.5 pH Litmus Paper

Test Your Body Acidity pH 4.5-7.5 Order pH Litmus Paper $19.90 for a package of 75 feet. 1 Package=5 Rolls of 15 feet each. A total of 75 feet of litmus paper. Rolls are packed in heat-sealed aluminum foil and tightly secured in a plastic case. Two small color charts furnished within each refill. Includes free large pH color chart. The pH Paper tests saliva and urine. Saliva is best at 7.4 or 7.5. Urine is usually 6.0-7.0. Vaginal pH Tests. Use with empty dispenser below. The Correct Acid/Alkaline Balance

See larger pH Dispenser photo   Dispenser for above paper

Order Empty pH Dispenser $4.90 per empty dispenser for pH paper range 4.5-7.5 above. Order pH Paper + Empty Dispenser $21.80 - Save $3 1 Package=5 Rolls of 15 feet each. A total of 75 feet of 4.5 to 7.5 pH paper (litmus paper). Includes free pH color chart.

Tests Saliva and Urine pH Litmus Paper 5.5 to 8.0 $19.90 a kit for a package of 15 feet. Includes dispenser and color chart. Sharp color change every half pH unit. Used for testing saliva to determine body acid/alkaline level and for testing urine.

pH is defined in terms of the hydrogen ion activity:
pH = –log10 aH + or 10– pH = aH +

pH equals the negative logarithm of the hydrogen ion activity, or the activity of the hydrogen ion is 10 raised to the exponent -pH. By the latter expression, the use of the p exponent becomes more obvious. The activity is the effective cocentration of the hydrogen ion that is in solution.

If the solution has excess acid, the balance is shifted so that scale reads a number lower than 7. –the greater the acid strength, the lower the pH value. Similarly, a solution that is alkaline has a pH that is higher than 7, and the greater the alkali strength, the higher the pH value –up to 14.

Each unit on the pH scale actually represents a 10 fold difference in acid activity. Thus, a pH 4 solution is ten times as acid as a pH 5 solution. A pH 3 solution, in turn has ten times the acid activity of the pH 4 solution–and 100 times the acidity of the pH 5 solution.

The pH scale of 0 to 14 is derived from the chemical properties of water and this pH scale cannot be used with other solvents such as alcohol, oils and other non-aqueous systems.

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