Describe the features and characteristics of the products in the document.
The HI 93711 is a portable instrument designed to measure free and total chlorine content in water and wastewater. It utilizes an exclusive positive-locking system for cuvet placement and features an LED light source at 555 nm based on the DPD method. The device includes auto-shutoff after 10 minutes of non-use and operates within temperatures of 0 to 50°C.
| Range Free Chlorine | 0.00 to 2.50 mg/L |
|---|---|
| Range Total Chlorine | 0.00 to 3.50 mg/L |
| Resolution | 0.01 mg/L |
| Accuracy | + 0.03 mg/L + 3% of reading |
| Light Source | LED @ 555 nm |
| Battery Life | 40 hours |
The instrument is warranted for two years against defects in workmanship and materials when used correctly.
The cuvet should be shaken gently for 20 seconds, or 2 minutes if analyzing seawater.
This occurs when excess ambient light reaches the detector because the cuvet is not inserted correctly.