Product Introduction
GL-900 multi parameter water quality analyzer, the principle of the measured items conforms to the recognized methods in the environmental protection industry. The core components of the equipment, such as light sources and sensors, are imported from abroad and have more stable optical performance. The device is equipped with patented technologies "Glos Water Quality Intelligent Detection System" and "360 ° Rotating Colorimetric Technology", making detection simple and intelligent. The product is equipped with various applications such as water quality analysis, photometric measurement, self built coefficient curve, self built standard curve, data printing, batch testing, and guided testing mode.

application area
It can be widely used for water quality testing in research institutes, sewage engineering, water environment testing, petrochemicals, metallurgy and steel, biomedicine, food and dairy industry, wool textile printing and dyeing, electronic machinery, aquaculture, photovoltaics, leather, papermaking, and other fields.

Measurement principle
The determination of COD is based on the "HJ/T 399-2007 Water Quality Chemical Oxygen Demand Rapid Digestion Spectrometric Method"
The determination of ammonia nitrogen is based on the "HJ 535-2009 Determination of Ammonia Nitrogen in Water Quality - Nessler's reagent spectrophotometric method"
The determination of total phosphorus is based on GB 11893-89 "Determination of total phosphorus in water quality - Ammonium molybdate spectrophotometric method"
The determination of total nitrogen is based on the alkaline persulfate digestion photometric method

Product Features
Equipped with 360 ° rotation colorimetric technology, the stability is improved by 10 times.
Imported solid-state cold light source with a lifespan of 100000 hours and stable performance.
Equipped with the self-developed Glos water quality intelligent detection system, making detection simpler and more intelligent.
Advanced optical system focuses the entire beam of light onto the sensor, improving the accuracy of detection results.
• Support the determination of various water quality pollutants and expand the measurement items.
Guided operation, easily complete water quality measurement according to the on-screen guidance prompts.
Equipped with a dual color system, it supports both tube and dish color comparisons.
Users can implement the self built curve function and provide custom calibration for coefficient curves and sample curves.
The program can be updated and measurement data can be exported through the USB interface.
8-inch 1024 × 768 resolution IPS level high-definition capacitive touch screen.
• Touch to operate stereo feedback, providing a more comfortable operating experience with just a few clicks.
Built in thermal printer, supporting automatic printing and batch printing.
ABS material, high-strength, corrosion-resistant, and high-temperature resistant shell.
Equipped with a multifunctional intelligent digestion device, water sample digestion can be completed with just one click.
Equipped with an imported Biohit pipette, it reduces errors in water sampling, making it simpler and more stable.
Equipped with factory pre made reagents and consumables, there is no need to repeatedly transfer and prepare concentrated sulfuric acid. Simply add water quality samples to the test tube for testing.

Main indicators and technical parameters

PRODUCT MODEL	GL-900 Multi Parameter Water Quality Analyzer
Detection parameters	COD	Ammonia nitrogen	total phosphorus	total nitrogen
Measurement standards	HJ/T399-2007	HJ535-2009	GB11893-89	Alkaline persulfate digestion photometric method
measuring range	0-15000mg/L	0-50mg/L	0-16mg/L	0-250mg/L
Anti chlorine interference	2000mg/L	－
limit of detection	5mg/L	0.05mg/L	0.02mg/L	0.05mg/L
Dissolving temperature	165℃，20min	No need to dissolve	150℃，15min	120℃，30min
detection time	25 minutes/batch	5 minutes/batch	20 minutes/batch	35 minutes/batch
repeatability	≤± 1％
Indication error	≤± 3％
Optical stability	≤± 0.001Abs/20 minutes (100000 hours lifespan)
Colorimetric method	Dual color pool, supporting both 360 ° rotating tube color comparison and dish color comparison
printer	Micro thermal printer
operating system	Equipped with patented Glos water quality intelligent detection system technology
screen display	8-inch 1024 × 768 resolution IPS level high-definition capacitive touch screen
Equipment functions	Water quality analysis, photometric measurement, data management, self built coefficient curve, self built standard curve, PC online, USB upgrade, etc
Instrument power supply	AC（220V±5%），50Hz
work environment	5-40 ℃, ≤ 85% non condensing
Instrument dimensions	408mm×208mm×126mm
Instrument weight	5.2kg

Serial Number	Testing items	Detection range	limit of detection
1	COD	0-15000mg/L	5mg/L
2	Ammonia nitrogen	0-50mg/L	0.05mg/L
3	total phosphorus	0-16mg/L	0.02mg/L
4	total nitrogen	0-250mg/L	0.05mg/L
5	chroma	0-500PCU	5PCU
6	turbidity	0-100NTU	3NTU
7	Suspended solids	0-500mg/L	5mg/L
8	copper	0-1mg/L	0.04mg/L
9	nickel	0-1mg/L	0.005mg/L
10	iron	0-5mg/L	0.1mg/L
11	zinc	0-3mg/L	0.05mg/L
12	hexavalent chromium	0-1mg/L	0.01mg/L
13	total chromium	0-1mg/L	0.01mg/L
14	cobalt	0-2mg/L	0.02mg/L
15	manganese	0-16mg/L	0.04mg/L
16	Permanganate index	0-10mg/L	0.3mg/L
17	sulfide	0-1mg/L	0.01mg/L
18	Volatile phenol	0-2mg/L	0.01mg/L
19	cyanide	0-0.5mg/L	0.01mg/L
20	fluoride	0-1.6mg/L	0.02mg/L
21	Residual chlorine	0-10mg/L	0.05mg/L
22	Total residual chlorine	0-10mg/L	0.05mg/L
23	chlorine dioxide	0-3mg/L	0.05mg/L
24	nitrite	0-0.2mg/L	0.003mg/L
25	nitrate nitrogen	0-20mg/L	0.05mg/L
26	phosphate	0-1.6mg/L	0.02mg/L
27	sulfate	8-200mg/L	2mg/L
28	Anionic surfactant	0-2mg/L	0.02mg/L
29	formaldehyde	0-0.2mg/m³	0.001mg/m³