Imported COD digestion pipe

NegotiableUpdate on 02/02

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Nature of the Manufacturer: Producers

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Place of Origin

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Overview

Imported COD digestion tubes are widely used in municipal and industrial laboratories to measure the concentration of all organic pollutants in wastewater. The concentration of pollutants is determined by measuring the amount of oxygen required to oxidize organic substances in the sample.

Product Details

Instrument method testing package

scope	method	Catalog Number	Number of sample bottles
0-150 ppm（LR）	Dichromate reactor digestion	K-7350S *	25
0-150 ppm（LR）	Dichromate reactor digestion	K-7355 *	150
0-150 ppm（LR）	Dichromate reactor digestion	K-7351S	25
0-150 ppm（LR）	Dichromate reactor digestion	K-7356	150
0-1500 ppm（HR）	Dichromate reactor digestion	K-7360S *	25
0-1500 ppm（HR）	Dichromate reactor digestion	K-7365 *	150
0-1500 ppm（HR）	Dichromate reactor digestion	K-7361S	25
0-1500 ppm（HR）	Dichromate reactor digestion	K-7366	150
0-15,000 ppm（HR +）	Dichromate reactor digestion	K-7370S *	25
0-15,000 ppm（HR +）	Dichromate reactor digestion	K-7375 *	98
0-15,000 ppm（HR +）	Dichromate reactor digestion	K-7371S	25
0-15,000 ppm（HR +）	Dichromate reactor digestion	K-7376	98

Imported COD digestion pipeanalysis standard

product	Catalog Number
Calibration standard, 1000 ppm (200mL)	A-7301
Calibration standard, 10000 ppm (200mL)	A-7310

Imported COD digestion pipemethod

COD measurement is widely used in municipal and industrial laboratories to measure the concentration of all organic pollutants in wastewater. The concentration of pollutants is determined by measuring the amount of oxygen required to oxidize organic substances in the sample.
Reference: USEPA, Analysis Methods for Water and Wastewater, Method 410.4 (1983); APHA Standard Method, 22nd edition, Method 5220 D-1997; A.M.Jirka，M.J.Carter， Micro semi-automatic analysis of chemical oxygen demand for surface water and wastewater, Analytical Chemistry, Volume 47, Page 1397 (1975); J. A. Winter "Method Study 3, Demand Analysis, Evaluation of Analysis Methods for Water and Wastewater", USEPA，1971； ASTM D 1252-00， The chemical oxygen demand of water (dichromate oxygen demand).

Dichromate reactor digestion method
CHEMetrics provides two dichromate reactor digestion methods (USEPA approved method and free mercury method) for rapid, simple, and safe determination of low, medium, and high concentrations of COD. The reagents used in the analysis methods recognized by USEPA contain mercuric sulfate, which is used to remove the interference of chloride. When there is no need to report to USEPA and the interference of chlorides can be ignored, free mercury products that are easier to post-treatment are very suitable.
CHEMetrics' leak proof reagent tubes contain pre measured solutions of sulfuric acid and potassium dichromate. When conducting COD measurement, the operator only needs to unscrew the spiral bottle cap lined with Teflon on the reagent bottle, add the sample into the reagent tube, and cover the cap. Then place the reagent tube into a standard digestion apparatus and heat it at 150 ℃ for 2 hours. After digestion is complete, any photometer that can accommodate a sample cell with a diameter of 16mm can read the measurement results.