GB 6857-1986 regulates the pH reference reagent potassium hydrogen formic acid. It specifies the technical requirements for potassium hydrogen phthalate, such as high purity standards, clear inspection rules, covering sampling methods and qualification criteria, and test methods for determining various indicators. As an important pH reference reagent, hydrogen and potassium formic acid produced and inspected in accordance with this standard can ensure the accuracy of acidity measurement and calibrating pH measuring instruments, providing a reliable reference basis for accurate pH determination in many fields such as chemical industry, scientific research, and pharmaceuticals.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Abolish | ||
|---|---|---|---|
| CCS | G61 | ICS | 71.040.30 |
| Release Date | 1986-09-06 00:00:00 | Implementation Date | 1987-08-01 00:00:00 |