This manual is the user manual for HI 93723 Chromium VI High Range ISM, which introduces the use method and maintenance method of the product.
The HI 93723 is a portable instrument designed to measure hexavalent chromium (Cr VI) content in water and wastewater within a range of 0 to 1000 µg/L. It utilizes an exclusive positive-locking system for cuvet placement and includes features such as auto-shut off after 10 minutes of non-use and display codes to aid routine operations.
The document details the measurement procedure, which involves zeroing the instrument with a sample, adding a specific reagent packet (HI 93723-0), and reading the concentration. It also covers troubleshooting for interference from substances like vanadium and iron, battery replacement procedures, and lists required accessories and reagent sets.
| Resolution | 1 µg/L |
|---|---|
| Accuracy | +5 µg/L or +4% of reading |
| Light Source | LED @ 555 nm |
| Battery Life | 40 hours |
| Auto-Shut off | After 10 minutes of non-use |
The instrument turns itself off after 10 minutes of non-use.
The HI 93723-0 Chromium VI HR Reagent packet is required.