classicalCODThe methods include2Potassium dichromate for hours-sulfuric acid-The catalyst is digested and refluxed, and after cooling the sample, excess oxidizing reagent is dripped back through ferrous sulfate amine.

SP2000The analyzer is based on traditional methodsISOsix thousand and sixtyandGB11914-89The methods are combinedSP5000Digestive device, can be used in large quantitiesCODanalysis. After digestion, the operator willSP5000The sample rack is directly loaded ontoSP2000Above, the analyzer has aXYZ4Sample processing system, equipped with6to20An interchangeable120Sample rack, maximum load capacitypositionCOD

Test tube.The instrument includes a titrator, a manipulator with a dropper, electrodes, and a stirrer. After titration is completed, the software automatically calculates and stores eachCODThe data. Data can be displayed, printed, or converted to other software on a computer screenLIMS

Compatible file types. The analyzer can be configured with two sets of titrators for measuring at different ranges without the need to replace the droppertypicalCOD

Analysis process:Sample transfer toCODAdd a specific volume of potassium dichromate and sulfuric acid mixed digestion solution to each sample in the test tube. Enter the sample number and dilution factor in the sample table of the software, and place the test tube holder inSP5000180In the automatic digestion system, the reflux condenser is connected to the test tube. exist2℃ digestion

Hour. After digestion, cool down and reflux to the condenser for flushing and condensation.Transfer the test tube bracket directly toSP2000On the robot analyzer, start the analyzer and the instrument will automatically stir the sample and drip back to the endpoint through ferrous ammonium sulfate. After automatically cleaning the burette, electrode, and stirring slurry, proceed to the next sample titration until all samples are measured, and automatically calculate the value of each sample through softwareCODThe content and results can be displayed on a computer screen, printed, or converted into other softwareLIMS

Compatible file formats.

Automatic measurement steps:

● Sample preparation ●

Sample digestion●

Reflux condensation●

Sample homogenization●

Sample titration●Clean the titration head during each measurement period/

stirrer●countCOD

The content