This document is a chemical reagent test kit instruction manual, which provides information on the scope of use, measurement method, reagent ratio, and usage steps of the test kit
The Hanna Instruments HI 3839 is a chemical test kit designed to measure hydroxide levels in solutions, such as those used in electrolytic copper plating. The kit includes calibrated vessels, phenolphthalein indicator, reagent titrant solution, and a syringe. It utilizes an acid titration method where the endpoint is determined by a color change from pink to colorless using phenolphthalein.
The manual details two determination methods based on expected concentration ranges: one for 0 to 1 g/L (ppt) hydroxide using a 50 ml vessel, and another for 0 to 10 g/L (ppt) using a 5 ml vessel. Results are calculated by reading the volume of titration solution used from the syringe scale.
| Range (High) | 0 to 10 g/L (ppt) OH- |
|---|---|
| Range (Low) | 0 to 1 g/L (ppt) OH- |
| Analysis Method | Acid titration using phenolphthalein indicator |
| Sample Size (High Range) | 5 ml |
| Sample Size (Low Range) | 50 ml |
| Number of Tests | 110 (average) or 200x1 / 20x60 mm case |
Read the milliliters of titration solution from the syringe scale and multiply by 10 to obtain g/L (ppt) OH-.
Read the result directly off the syringe scale to obtain g/L (ppt) hydroxide in the aqueous sample.
The addition of phenolphthalein determines the endpoint by changing from pink to a colorless solution.