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GL-108 National Standard Microcrystalline COD Dissolver
GL-108 National Standard Microcrystalline COD Dissolver
Product details

GL-108 National Standard Microcrystalline COD Dissolver



Product Introduction

The GL-108 national standard microcrystalline COD digester follows the national standard (GB11914-89) and environmental standard (HJ828-2017), ensuring a digestion operation with reflux heating and micro boiling for 2 hours. The preparation and addition of reagent solution are consistent with the standard method, ensuring reliable and accurate analysis results.


application area

It can be widely used for water quality testing in research institutes, sewage engineering, water environment testing, petrochemicals, metallurgy and steel, biomedicine, food and dairy industry, wool textile printing and dyeing, electronic machinery, aquaculture, photovoltaics, leather, papermaking, and other fields.

Measurement principle

National standard (GB11914-89) and environmental standard (HJ828-2017)

Product Features

Using imported microcrystalline panels, it can withstand high temperatures of 700 ℃, generate heat evenly, have fast rise/fall speeds, and have a smooth and easy to clean and maintain surface.
A new type of high-temperature resistant ceramic fiber heating plate with uniform thermal conductivity,
The glass burr reflux tube and heat dissipation system have good digestion reflux effect to ensure the parallelism and accuracy of the digestion results.
Digital display of microcrystalline panel temperature. Digital display of digestion time: temperature and timing can be set at any time.
After digestion is completed, the equipment automatically stops heating and the fan continues to work for 120 minutes to assist in sample cooling. It can be operated unattended.



Technical Parameter


Instrument model GL-108
Heating quantity 8 samples
heat panel Imported Microcrystalline Panel
Cooling system Glass burr reflux pipe and dual fan thermal cooling
Time and Temperature 165-300℃ ,5-150min
Power 2000W
Instrument power supply AC(220V±5%), 50Hz
work environment 5-40 ℃, ≤ 85% non condensing
Instrument dimensions 440mm×330mm×570mm
Instrument weight About 15kg
measuring range Dilute water samples with concentrations between 10-1000mg/L and greater than 1000mg/L
digestion time 10 minutes to 2 hours
measurement error The relative standard deviation of potassium hydrogen phthalate standard solution (500mg/L) is not more than 5.0%,
The relative standard deviation of industrial organic wastewater (500mg/L) is not more than 7.0%
Execution standards Complies with both national standards (GB11914-89) and environmental standards (HJ828-2017)

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Successful operation!

Successful operation!

Successful operation!