COD Reflux Digester

Model：

HD-W108S

Introduction：

COD Digester (COD Reflux Digester) performs reflux digestion of water samples for COD determination per HJ828-2017. Widely used for environmental monitoring, soil analysis, food safety testing and disease control....

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Technical Specifications
Product video

I. Product Introduction

The intelligent COD reflux digester follows the basic principle of the national standard HJ 828-2017 "Water quality - Determination of chemical oxygen demand - Dichromate method". It guarantees the two-hour reflux digestion at micro-boiling temperature, and the preparation and addition of the reagent solutions are identical to those of the standard method, which ensures reliable and accurate analytical results.

II. Application Range

It is widely used for the pretreatment of water samples in environmental monitoring, soil analysis, food safety testing and centres for disease control and prevention.

III. Product Features

1	Efficient and accurate	standardized operating procedures and precisely controlled test conditions deliver fast digestion with consistent and accurate results.
2	Simple operation and high automation	an automatic control system allows the temperature and time to be set with one key, which reduces human error and simplifies the workflow.
3	Excellent safety	a glass serrated reflux tube replaces the spherical reflux tube, and air cooling combined with water cooling replaces the traditional tap-water cooling, saving water and standardizing the procedure; over-temperature power cut-off further improves safety.
4	Easy-to-clean panel	the graphene heating plate has a smooth, flat surface, so stains can be wiped off immediately and damage caused by careless operation is reduced.
5	Environmentally friendly	microcomputer timing control heats the whole conical-flask reflux assembly, saving energy, reducing the electrical load and improving efficiency.
6	Visual status feedback	status indicator lamps on the main unit show the operating state by colour, which is intuitive and convenient.

IV. Technical Parameters

Heating method	Far-infrared black crystal panel
Batch capacity	8 samples
Heating flask	250 mL, 24/29 ground-joint flat-bottom conical flask with serrated reflux tube
Temperature range	Room temperature to 350 °C
Measurement method	HJ 828-2017 "Water quality - Determination of chemical oxygen demand - Dichromate method"
Timing range	0–999 min
Measurement error	Potassium hydrogen phthalate standard solution (500 mg/L): relative standard deviation ≤ 5.0%; industrial wastewater (500 mg/L): relative standard deviation ≤ 8.0%
Cooling method	Air cooling + water cooling
Status feedback	Indicator lamp colour shows the operating state
Ambient temperature	5–40 °C
Ambient humidity	≤85% RH (non-condensing)
Power	2000 W
Power supply	AC 220 V / 50 Hz
Dimensions	448 × 406 × 565 mm
Weight	12 kg

The video is currently in production, please stay tuned......

COD Reflux Digester

I. Product Introduction

II. Application Range

III. Product Features

IV. Technical Parameters

Shandong Horde Electronic Technology Co., Ltd.

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