This is an instruction manual that introduces the use of HI 4421 DO/BOD/OUR/SOUR/Temperature Bench Meter
The Hanna Instruments HI 4421 is a professional bench meter featuring a color graphic LCD designed for measuring Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD), Oxygen Uptake Rate (OUR), Specific Oxygen Uptake Rate (SOUR), and temperature. The device supports various display modes including Basic, GLP, Graph, and Log History. It includes features such as automatic or user-standard calibration, AutoHold for stable readings, and configurable alarm limits.
| Measurement Parameters | DO, BOD, OUR, SOUR, pressure and temperature |
|---|---|
| DO Range | 0.00 to 90.00 ppm |
| DO Resolution | 0.01 ppm |
| DO Accuracy | ±1.5% of reading±1 digit |
| Temperature Range | -4.0 to 248.0 °F |
| Temperature Accuracy | ±0.2 °C, °F, K |
| Display | 240 x 340 pixels |
| Dimensions | 160 x 231 x 94 mm |
The meter is supplied with a DO probe, electrolyte solution, membrane caps, electrode holder, power adapter, and instruction manual.
The HI 4421 is warranted for two years against defects in workmanship and materials.
Yes, the HI 4421 supports measurements for BOD (Biochemical Oxygen Demand) and OUR (Oxygen Uptake Rate).