Brief Introduction
ET99731 is a Lovibond high-performance spectrophotometer with a wide wavelength range, capable of analyzing concentrations including COD, TOC, residual chlorine, total chlorine, total phosphorus, total nitrogen, ammonia nitrogen, hardness, phosphates, sulfates, nitrates, formaldehyde, volatile phenols, as well as ions such as iron, copper, manganese, and potassium. Quick operation and excellent data management functions, widely used in water quality monitoring and analysis in fields such as environmental protection, municipal administration, scientific research, and education.
Operational Characteristics
Built in multiple predetermined measurement programs, nearly 120 range indicators, can quickly determine concentration and absorbance
330-900nm wavelength, wavelength accuracy ± 1nm, large screen design, user-friendly interface
Equipped with user-defined calibration and automatic wavelength scanning functions to ensure measurement accuracy
It has user-defined curves and online network upgrade functions
COD determination adopts potassium dichromate method, which complies with international standards, high-precision analysis, and effectively avoids chlorine interference
The digestion device can simultaneously digest 25 samples, quickly raise the temperature, and has multiple digestion temperature and time settings
Microcomputer control technology, with countdown reaction time function, user-friendly design, and user-friendly interface
1000 sets of detailed data storage, RS232 data interface, convenient connection to PC or printer, easy data management
Unique design measurement slot suitable for multi path colorimetric dishes

Product parameters

ET99731(ET99731D) COD/TOC Multi parameter Water Quality Comprehensive Tester - ()
measuring range	Nearly 120 measurement parameter indicators
wavelength range	330 to 900 nm， Self calibrating tungsten lamp light source with a bandwidth of 10 nm and an accuracy of ± 2nm
Wavelength reproducibility	±1 nm
Photometric range	-0.3 to 2.5 A
Correction mode	Automatic zero point calibration, using SMD microprocessing technology, with factory calibration and user-defined dual calibration modes
Measurement pool type	Multi functional measuring pool, with multiple specifications of colorimetric dishes available: 16mm, 24mm circular colorimetric dishes; 10mm, 20mm, 50mm rectangular colorimetric dishes
Data Storage	1000 sets of data, various data related information; RS232 data interface, can be connected to a computer or printer
Power supply mode	100-240 V/12 Vdc, 30W power adapter
Dimension	270 × 275 × 150 mm/3200g (host)
international certification	DIN EN 50081-1 VDE 0839 part 81-1: 1993-03 DIN EN 50082-2 VDE 0839 part 82-2: 1996-02
Dissolver parameters
Dissolver design	25 hole digestion, 16mm aperture, metal corrosion-resistant shell, thin film button
Dissolving temperature	Four temperature settings: 70 ℃, 100 ℃, 120 ℃, and 150 ℃; Within 10 minutes, reach the set temperature from room temperature
digestion time	30min，60min，120min， Four options for continuous heating
Power	400W， Automatic temperature control, anti overheating system protection
Power source	230Vac，50-60 Hz
security setting	ET418933 dedicated digestion protective cover effectively prevents accidental splashing of samples
Standard configuration
ET99731	Host, RD125 digestion and heating processor, one set of ET99955 or ET99974 or 99106COD special reagents (indicate the required model or range when placing an order), ET197635 colorimetric dish cleaning cloth, related accessories, Chinese and English user manual

Host, RD125 digestion and heating processor, one set of ET99955 or ET99974 or 99106COD special reagents (indicate the required model or range when placing an order), ET197635 colorimetric dish cleaning cloth, related accessories, Chinese and English user manual