1、 Overview

HJ-102C typeCOD digesterIt uses microcomputer technology for timed control of the heating electric furnace, which can simultaneously heat multiple digestion reflux devices. It is a necessary digestion device for conducting COD experiments. The chemical solution preparation, operation, and COD calculation of the instrument strictly follow national standards to ensure accurate and reliable results. This instrument can also achieve energy-saving and efficiency improvement through power regulation. Widely used in various industries (industrial wastewater, urban sewage, domestic sewage, and surface water in rivers and lakes) for wastewater detection experiments.

2、 Functional Features

1. The chemical solution preparation, operation, and COD calculation of the instrument are fully in accordance with GB11914-89, ensuring accurate and reliable results.

2. By using microcomputer technology for timed control of far-infrared electric furnace plates, 8 or 12 digestion reflux devices can be heated simultaneously.

3. Composed of heating, temperature control, and air cooling, it ensures good boiling cooling effect, ensuring experimental accuracy and safety.

4. The power can be adjusted according to the actual voltage to ensure complete digestion.

5. Automatically stop at that time, no need for manual supervision.

6. The design concept of air cooling combined with water cooling can save thousands of yuan in water bills for enterprises.

3、 Technical parameters

Application project	COD experiment (determination of chemical oxygen consumption)
Heating at a constant temperature	165℃
Temperature control error	±1℃
scope of application	0-1000mg/l can be directly measured, while 1000-10000mg/l needs to be diluted before measurement.
digestion time	2 hours (adjustable)
measurement error	Potassium hydrogen phthalate standard solution (500mg/L), RSD ≤ 5.0% Industrial organic wastewater (500mg/L), RSD ≤ 8.0%
Batch digestion sample quantity	Available with 8 or 12 holes
Power supply and power consumption	AC220V； 1kw
ambient temperature	5~40℃