KHCOD-8ZStandard Type COD Dissolution Apparatus, utilizing microcomputer technology with rational design, capable of simultaneously heating and refluxing dissolution for 8 250mL conical flasks.Completely in accordance with the new national standard HJ 828-2017, National Standard MethodMicrocrystalline glass countertop, using electric resistance wire, with a reasonable heating power to ensure gentle boiling for 2 hours.
KHC0D-8ZThe standard COD digestion device is equipped with a special electric heating plate for heating, featuring a microcrystalline glass surface, an integrated structure, and a reasonable air insulation design.The microcrystalline heating plate is a single piece, making it easy and simple to install or replace the electric furnace plate.The electric furnace plate heats up evenly during operation, with quick heating and cooling speeds. It's easy to clean if a sample solution accidentally drips onto it.
KHC0D-8ZType Standard COD Dissolution Apparatus, featuring adjustable dissolution time, countdown display for dissolution time, automatic shutdown of heating upon completion, dual fans continuing to operate for auxiliary sample cooling, and unattended operation.
KHC0D-8ZStandard COD Dissolution Apparatus with glass burr reflux tubes instead of spherical reflux tubes, cooled by both air and water coolingTechnology replaces the recirculating water cooling method, making operation more convenient. The cooling section is mainly achieved by water cooling of burr condenser tubes and fan air cooling, with the upper part of the condenser tube being spherical.3Bubble to ensure cooling effect; catalyst is added here, preventing the immediate volatilization of light components in the sample, and a cover cap can be applied. The lower part is"Burrs"Shape, extending from the condenser tube wall on a plane3Opposite each other"Cold Brew"The spherical condenser tube offers an increased cooling surface area over a simple spherical design, and effectively blocks the passage of volatile substances and vapors. Additionally, the combined action of the cooling water within the upper spherical reflux tube and the internal fan of the machine enhances this effect.KHC0D-8ZStandard COD Dissolution ApparatusEnsured sample return and cooling.The insert type bur return tube is safe and stable in use.
Technical Specifications:
Meets National Standards: New Standard HJ828-2017Replace the original GB 11914-89
Measurement Range: 5-700 mg/L; Sample diluted to 700 mg/L-10,000 mg/L for measurement
Dissipation Time: 1 minute to 2 hours and 30 minutes (user-selectable heating time)
Measurement Error: The relative standard deviation of the phthalic acid hydrogen potassium standard solution (500mg/L) is not greater than 5.0%.
Industrial organic wastewater (500mg/L) relative standard deviation does not exceed 8.0%.
Ambient Temperature: ≤ 40℃
Cooling Method: Top-mounted, insert-type 3-bubble fin condenser with water cooling and dual-fan double cooling system. The fan's air cooling can be manually or automatically controlled.
Number of digestion samples: 8 x 250ml conical flasks, digested simultaneously in two rows
Heating Power: <1700W (user can optionally choose a heating power adjustable model)
Heating Surface: Microcrystalline glass heating surface, solid heating plate structure, suspended heating, easy replacement and maintenance by simply removing, very convenient.
Instrument Dimensions: 490*290*605mm (H)
