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The pH test measures the acidity or alkalinity of a solution. The pH is measured on a scale of 0 to 14. Solutions with a pH less than 7 are considered acidic, while those with a pH greater than 7 are considered basic (alkaline). A pH of 7 is considered neutral. This test can be used to determine quality control or shelf life stability studies.

Applicable Standards

  • USP 791

Test Options

Standard turn around times (TAT) are listed below. Ask an expert for a specific consultation on your product.

Code Test TAT (days) Request Quote
CHM110 pH Analysis 3 Add
CHM115 pH reported with other tests 7 Add
CHM110 - pH Analysis
3 days
CHM115 - pH reported with other tests
7 days

Study Outline

In the pH test, a benchtop pH meter is used to determine the pH of liquid samples. Non-liquid samples are extracted with USP purified water and the extract is analyzed.