KHC0D-8ZThe standard COD digestion device adopts microcomputer technology and is designed reasonably. It can simultaneously perform heating reflux digestion on 8 250ML conical bottles. *According to the GB11914-89 national standard method, high-quality electric furnace wire is selected, with the correct heating power and a slight boiling time of 2 hours.

KHC0D-8ZThe standard COD digestion device adopts a specially designed electric furnace plate for heating, with uniform surface heating and fast heating and cooling speed. At the same time, if the sample solution is accidentally dropped, it will evaporate naturally, which can reduce the damage to the instrument caused by improper operation.

KHC0D-8ZType, can set the digestion time, display the digestion time countdown, after digestion is completed, the instrument automatically stops heating, the instrument fan continues to work, assists in sample cooling, and can be unattended.

　KHC0D-8ZType,Using glass burr reflux tubes instead of spherical reflux tubes, and replacing circulating water cooling methods with air and water cooling technologies, the operation is more convenient. The cooling part is mainly completed by burr condensation tube water cooling and fan air cooling, and the upper part of the condensation tube is spherical3Bubble, better cooling effect, catalyst added from here, prevents the instantaneous evaporation of light components in the sample, and can be covered with a volatilization cap. The following section is'burr'Shape, protruding from the wall of a condenser tube on a plane3A person facing each other'Cold Bubble'Compared to a simple spherical condenser tube, it increases the cooling area and can block the passage of volatile substances and vapors. In addition, the cooling water in the upper part of the spherical reflux tube and the fan inside the machine have a dual effect,KHC0D-8ZType,Ensure the reflux cooling of the sample,The plug-in burr reflux tube is safer and more stable to use.

Technical specifications:

Measurement range: 5-700mg/L; Determination after dilution of 700mg/L to 10000 mg/L water sample

Dissolving time: 1 minute to 2 hours and 30 minutes (users can choose their own heating time)

Measurement error: The relative standard deviation of potassium hydrogen phthalate standard solution (500mg/L) shall not exceed 5.0%;

The relative standard deviation of industrial organic wastewater (500mg/L) is not more than 8.0%

Environmental temperature: ≤ 40 ℃

Sample size for digestion: 8 250ml conical flasks,Simultaneously heat and digest in two rows

Heating power: ≤ 1600W (AC 220V, 50HZ)

Instrument size: 490 * 290 * 605mm (H)

Note:YHCOD-100 8-well COD automatic digestion reflux analyzer (8 300ml straight bottles)

KHCOD-8Z8-hole COD national standard digestion reflux device (8 250ML conical flasks)

KHCOD-8K8-hole temperature controlled COD national standard digestion reflux device (8 250ML conical flasks)