Overview

National standard GB11914-89 analytical methods to standardize the development of the water quality of chemical oxygen demand COD _(Cr), The heating digestion time of the method is strictly defined,

The acidity of the solution, the amount of the oxidant and the amount of the catalyst, etc .. Obviously, the water quality COD _(Cr)Of the determination is a strict condition, contrary to the conditions

get on Operation, it will affect the determination of accuracy.

HCA-101Standard COD ₍The instrument conforms to the basic principles of ISO and GB, which ensures the refluxing operation of micro-boiling for 2 hours,

Reagent solution preparation and dosage are consistent with the GB method to ensure reliable and accurate analysis results.

The instrument uses computer technology to control the timing of heating furnace, can be 8, 12 digestion cylindrical reflux device at the same time heating to achieve energy saving, reduce

Power load, the purpose of improving efficiency.

Glass bulb return pipe instead of spherical return pipe, and air-cooled cooling technology to replace the water, both water-saving and standardization of equipment,

While also improving the safety of the instrument.

The chemical solution preparation, operation and COD calculation of the instrument are in full compliance with GB11914-89, COD water samples below 50mg / L can be diluted by titrant and oxidant

To mention High-precision, higher than 1000mg / L of COD water samples can be diluted by the proportion of water samples to complete the determination.

Technical specifications

Measurement range: 0 ~ 1000mg / L, 0 ~ 10000mg / L (water sample dilution)

measure time: 10Minute to two and a half hours

Measurement error: standard potassium hydrogen phthalate solution (500mg / L), the relative standard deviation of not more than 5.0% industry

Organic wastewater (500mg / L), the relative standard deviation of not more than 8.0%

Ambient temperature: 5 ~ 40 ℃

Heating power: 600W (AC220V ± 22V, 50HZ)

8Tube configuration (200ml straight bottle) 12Tube configuration (150ml straight bottle)