Product Introduction
G90 portable water quality analyzer, the principle of the measurement 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 measuring instrument and the equipped digestion instrument are both touch screen operated. The product has built-in applications such as water quality analysis, data query, data export, and guided detection mode. It can measure four items: COD, ammonia nitrogen, total phosphorus, and total nitrogen (items can be freely combined and selected).

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

Functional characteristics of the measuring instrument
Imported solid-state cold light source has a 100000 hour optical lifespan, stable performance, and accurate measurement results.
Equipped with the patented Glos water quality intelligent detection system, making detection simpler and more intelligent.
Equipped with both Chinese and English languages.
Supports two power supply methods simultaneously, with a built-in No.5 battery and power adapter for power supply.
Equipped with a 3.5-inch color touch screen and guided operation, users can easily complete concentration measurements.
Equipped with support for (16mm) tube color comparison, digestion does not require the removal of liquid.
Support SD card expansion, which can achieve various functions such as data import, data export, data storage, device upgrade, etc.
Equipped with an imported Biohit pipette, it reduces errors in water sampling, making it simpler and more stable.
Equipped with pre made reagents, the measurement can be carried out by adding contaminated water samples to the test tube and then dissolving them.
ABS material, high-strength, corrosion-resistant, and high-temperature resistant shell.

Functional characteristics of the digestion instrument
Equipped with the patented technology "Glos Intelligent Digestion Program", there is no need for human operation during the operation process, which can achieve one click digestion of the project.
Adopting intelligent PID temperature control technology, the heating is uniform and the heating time is fast.
Each stage of the digestion process is equipped with alarm prompts to ensure fast and safe digestion.
• Equipped with temperature control and automatic cut-off function for overheating.
Equipped with an integrated heat-resistant protective cover to ensure safety and reliability during the digestion process.
Equipped with a 3.5-inch touch screen, it displays real-time parameters such as current temperature, set time, and remaining time.
• Support user-defined settings, temperature can be set from 0-200 ℃, time can be set from 1-999min, easy to operate.
Abs high-temperature resistant injection molded casing ensures that the temperature of the digestion instrument casing is suitable during the high-temperature digestion process.

Technical parameters of the measuring instrument

model	G90 portable water quality analyzer (measurement items can be freely combined and selected)
Detection parameters	COD	Ammonia nitrogen	total phosphorus	total nitrogen
Measurement standards	HJ/T399-2007	HJ535-2009	GB11893-89	Alkaline persulfate 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	≤± 5％
Indication error	≤± 5％
Optical stability	≤± 0.001Abs/20 minutes (100000 hours lifespan)
Colorimetric method	Colorimetric tube (digestion colorimetric integrated tube)
data record	4000 records on this device (can store billions of data records after inserting an SD card)
transmission mode	SD card
screen display	3.5-inch color touch screen
data manipulation language	chinese and english
Equipment functions	Water quality analysis, data query, data export, USB upgrade, etc
Adapter specifications	DC 5V，1A
work environment	5-40 ℃, ≤ 85% non condensing
Instrument dimensions	187mm×100mm×104mm
Instrument weight	495g

Technical parameters of digestion instrument

PRODUCT MODEL	G6 portable digestion instrument
Dissolve quantity	6 pieces
Heating speed	Raise to the set temperature of 165 ℃ within 10 minutes
Dissolving capacity	0-10mL
Temperature control mode	Intelligent PID temperature control
Temp Accuracy	±1℃
Dissolving temperature	0~199 ℃ adjustable (target temperature constant temperature control)
Time setting	0-999min (beep alarm prompt at the end of digestion)
Aperture/Depth	16mm / 55mm
Dissolve protective board	Prevent burns caused by misoperation
Dissolve the protective cover	High transparency integrated safety protection
rated voltage	DC12V
rated power	90W
External dimensions	181mm×126mm×142mm
Instrument weight	1.46kg
Other functions	Quick project switching ✔ Timer function ✔ Custom mode ✔
	One click digestion ✔ Overtemperature protection ✔ Clock display ✔ Digestion completion prompt ✔

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