测量范围： 0 to 150 mg/L（ppm）O2、0 to 1500 mg/L（ppm）O2、0 to 15000 mg/L（ppm）O2

The chemical oxygen demand (COD) is determined using the potassium dichromate method (K2CrO7). The pre made COD reagent complies with the Standard method 5220D and US EPA 410.4 standards. The dedicated heating digestion device is made of heat-resistant and corrosion-resistant materials, and can digest 24 samples simultaneously. It has overheating protection function to ensure safe and stable use.

Operation guide: Add 2mL of the tested water sample to the customized COD tube reagent ET99955 or ET99974 [Add 0.2mL of the tested water sample to ET99106]. Place the tube reagent containing the tested water sample into the ET99125 heating and digestion device, set the temperature to 150 ° C, and set the time to 2 hours. After heating and digestion, cool the COD reagent tube on the test tube rack to room temperature, and then measure it on the COD spectrophotometer.

Unique SMD microcomputer control technology, high-quality narrow band filter, temperature compensated LED optical system, built-in reaction timer, ensuring the results between sample measurement and user *, compact overall design, waterproof sample pool, ensuring fast and accurate measurement, good reproducibility, with calibration function and built-in software adjustment function, applied in scientific research, metrology for sample testing and identification.

Performance Features Highlights

Equipped with unique SMD microcomputer control technology, high-performance narrowband filter and temperature compensated LED light source system, new waterproof design, exquisite portability, and background light display screen.

▷ Factory and user-defined dual calibration function, automatic memory of the last zero calibration, no need for frequent zero calibration, good GLP function, automatic shutdown setting.

Unique IRiM infrared data transmitter [recommended ET214050] design, 16 sets of data storage, can be accessed and read at any time, convenient for on-site data organization and recording, and easy to connect with a computer for data transmission.

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Technical Specifications

ET99718 [Horizontal Version]

measurement range

0 to 150 mg/L（ppm）O2 、0 to 1500 mg/L（ppm）O2、0 to 15000 mg/L（ppm）O2

resolution

1 mg/L（ppm）、1 mg/L（ppm）、10 mg/L（ppm）

Accuracy @ 20 ° C

±3.5 % F.S.

optical system

Waterproof sample pool, temperature compensated LED optical system;

Dual wavelength of 430 nm and 610 nm, with Δ λ=5 nm; Resolution: 0.01A

Method Standard

Reference water and wastewater standard methods, 18th edition, potassium dichromate/sulfuric acid colorimetric method [ISO 15705:2002]

calibration mode

Automatic zero point calibration, factory calibration, and user-defined dual calibration modes

data management

16 sets of data storage, which can be accessed at any time; Cooperate with ET214050 IRiM infrared data transmitter for convenient data transmission with PC

Power mode

4 x 1.5AAA battery, automatically shuts down after 10 minutes without operation, LCD backlight

Applicable Environment

5 to 40 ° C, RH: 30 to 90% non condensing

Dimensions & Weight

Host size: 190 × 110 × 55mm, host weight: 450g

certification standard

CE certification, IP68 (under 0.1m conditions, 1 hour)

Technical specifications of heating and digestion processor

Dissolve quantity

Can simultaneously digest 24 samples, with a digestion aperture of 16mm, suitable for international custom tube reagents

Temperature setting

70, 100, 120, 150 ° C four gear selection

time control

30, 60, 120 minutes or continuous heating. After digestion is complete, it will automatically turn off with a prompt sound

temperature range

Pt100A built-in temperature probe, accuracy: ± 0.3 ° C

Protection type

ABS heat-resistant and corrosion-resistant material, temperature automatic control, anti overheating system protection

Power mode

230 V/50-60 Hz or 115 V/50-60 Hz; 40W

Manually switch between 110 V and 220 V through the voltage switch on the back

Applicable Environment

10 to 40°C、RH：85％ Max

Dimensions & Weight

Host size: 219 × 171 × 248mm, host weight: 3.9Kg

certification standard

CE Certification

Recommend purchasing accessories

ET99955 customized specialized chemical oxygen demand [COD-LR] reagent, applicable range: 0 to 150 mg/L (ppm)

ET99974 customized specialized chemical oxygen demand [COD-MR] reagent, applicable range: 0 to 1500 mg/L (ppm)

ET99106 customized chemical oxygen demand [COD-MR] reagent, applicable range: 0 to 15000 mg/L (ppm)

ET2420803 customized special COD standard solution, standard value: 100mg/L, specification: 30mL

ET2420804 customized special COD standard solution, standard value: 500mg/L, specification: 30mL

ET2420805 customized special COD standard solution, standard value: 5000mg/L, specification: 10mL

ET214050 customized dedicated IRiM infrared data transmitter, USB interface, suitable for data transmission to a computer for data, management, and analysis

ET197635 customized glass colorimetric dish cleaning cloth, packaging: 4 pieces/group

ET418957 customized ∅ 16mm ten hole colorimetric dish test tube rack, suitable for heating and cooling of tube reagents