Multi-Parameter Water Quality Measuring Instrument

Overview

Our multi-parameter water quality measuring instrument. It is specifically engineered to deliver accurate and comprehensive water quality assessments, making it ideal for applications in surface water, sewage, industrial wastewater, and environmental monitoring. With its user-friendly interface and robust functionality, the  stands out as a reliable tool for professionals in various fields.

Key Features

• High-Precision Measurements: Utilizes visible spectrophotometric methods with a high brightness and long-life cold light source, ensuring precise readings.
• Integrated Digestion and Color Development: Combines digestion and color development in a single tube, simplifying the testing process and reducing potential errors.
• Large LCD Display: Features a large screen for clear data presentation, available in both English and Chinese.
• Data Management Capabilities: Equipped with functions for data storage, retrieval, and printing. The instrument can store up to 50,000 data points and includes a standard curve with 200 entries.
• PID Temperature Control: Ensures uniform and rapid heating with an intelligent PID temperature control system, along with overtemperature protection.
• Comprehensive Reagent Kit: Includes a variety of ready-to-use liquid reagents for different water quality parameters, enhancing ease of use and accuracy.

2. Determination principle

order number	name	Determination principle
1	cod	Cr not produced by reduction was determined at a certain wavelength6+And the Cr produced by the reduction3+Total absorbance. Cr produced by reduction was measured at a certain wavelength at a high range3+The absorbance of.
2	ammonia nitrogen	The ammonia nitrogen in the form of free ammonia or ammonium ion reacts with Na’s reagent to form a yellow-brown complex. The absorbance of the complex is proportional to the content of ammonia nitrogen in proportion, and the absorbance is measured at the wavelength of 420nm.
3	total phosphorus	Persulfate was added to the sample so that the phosphorus in the solution was converted into orthophosphate. In acid medium, the orthophosphate in the sample, in the presence of antimony salt, reacted with ammonium molybdate to form phosphorus and molybdenum heteropolylate. The combination was immediately reduced by ascorbate to form a blue complex, and the absorbance was measured at 700nm.
4	total nitrogen	After alkaline persulfate was added to the sample to convert the nitrogen in the sample into nitronitrogen, under strongly acidic conditions, the nitrate reacted with chromogen to produce a brown yellow complex, and the absorbance was measured at a wavelength of 420nm.
5	suspended matter	The standard solution sequence is made and stored in the microcomputer system by spectrophotometry, so that the user can quickly measure the suspended water sample.
6	turbidity	The standard solution sequence is prepared and stored in the microcomputer system by spectrophotometry, so that the water sample turbidity can be quickly measured after collecting the water sample.
7	tone	The standard solution sequence is made and stored in the microcomputer system by spectrophotometric method, so that the user can quickly determine the color degree of the water sample after collecting the water sample.
8	copper	Under alkaline conditions, the divalent copper ions are reduced to copper ions by reducing agents, and they react to form a purple complex.
9	nickel	In ammonia or alkaline solution, it is first oxidized into tetravrients, and then forms a complex with the chromogen, and then the absorbance is measured by spectrophotometry, and calculated by the microcomputer system, the nickel content (mg/L) is directly displayed.
10	hexavalent chromium	The chromogenic agent reacts directly with hexavalent chromium to produce a purplish red complex, measures its absorbance by spectrophotometry, and directly displays the hexavalent chromium content (mg/L) after calculation by the microcomputer system.
11	Total chromium	The oxidant is added, the trivalent chromium is converted into hexavalent chromium, and then the chromogenic agent reacts with hexavalent chromium to generate the purplish red complex, the absorbance is measured by spectrophotometry, and the total chromium content (mg/L) is directly displayed after microcomputer system calculation.
12	iron	Add the reducing material to bring the Fe in the water sample3+All were converted to Fe2+,Fe2+Creating a stable orange-red complex with the adjacent phenanthroline [Fe (Phen) 3]2+, The absorbance is measured by spectrophotometry, and the iron content (mg/L) is directly displayed after calculation by the microcomputer system.
13	zinc	In a certain environment, it can react with the chromogen to form a stable complex, and then its absorbance is measured by spectrophotometry, processed and calculated by the micro-computer system and directly realistic zinc content (mg/L).
14	manganese	In a certain environment, the manganese ions react with the chromogen to produce a pink complex, and then the absorbance is measured by spectrophotometry, and the manganese ion content (mg/L) is directly displayed after calculation by the microcomputer system.
15	sulfate	In a certain environmental medium, after a series of reactions, sulfate and chromogen reaction, colored complex, and then the absorbance is measured by spectrophotometry, and the sulfate content is directly displayed after the microcomputer system.
16	nitrous phthalate	Under phosphoric acid medium, under certain PH, nitrite reacts with p-aminobbenzene sulfonamide to form diazosalt, and then couples with N- (1-naphthalyl) -ethylenediamine to generate red fuel, with maximum absorption at the wavelength of 540nm, and the nitrite content (mg/L) is directly displayed by microcomputer calculation.
17	residual chlorine, Total chlorine	In a certain environmental medium, the free residual chlorine directly reacts with the chromogenic agent to produce colored compounds, and then the absorbance is measured by spectrophotometry to directly display the residual chlorine / total residual chlorine content (in Cl2mg/L count).
18	dioxo Cl	When mker is added to eliminate the effect of free chlorine on the measurement, chlorine dioxide in the water reacts with the chromogen to produce colored substances, and then the absorbance is measured by spectrophotometry. After calculation by the microcomputer system, the content of chlorine dioxide is directly displayed (in ClO2count).
19	fluoride	Fluoride ion in a certain environmental medium and chromogenic agent finally form a complex, the complex at a certain wavelength, the absorbance and fluoride ion concentration is proportional to the absorbance of the complex after the microcomputer calculation directly shows the fluorine ion content (mg/L).
20	prussiate	Under weakly acidic conditions, the cyanide in the water sample goes through a series of reactions to finally produce a purple-blue compound. Within a certain concentration range, its color degree is proportional to the cyanide content. The absorbance is measured at a certain wavelength. After microcomputer calculation and processing, the instrument directly displays the content of cyanide in the sample (to CN–count).
21	dioxo Silicon	At a certain acidity, active silicon and ammonium molybdate produce silicon eye yellow, and then 1-amino-2-naphthol-4-sulfonic acid is reduced to silicon molybdenum blue, the color of this blue is related to the active silicon in water, the absorbance is measured, and the content of silica (mg/L) is directly displayed after microcomputer calculation.
22	nitrate	Under highly acidic conditions, the nitrate nitrogen in the water sample was reacted with the chromogen to produce a brown-yellow complex, and the absorbance was measured at 420nm.
23	Volatil	The distilled phenolic compounds react with chromogenic agent in a certain environmental medium to produce colored dye, and then their absorbance is measured by spectrophotometry, and after calculation by the microcomputer system, the volatile phenol content is directly displayed (calculated by phenol mg/L).
24	phosphate	Phosphate in a certain environmental medium, after a series of reactions, phosphate and chromogen reaction, produce colored complex, and then the absorbance is measured by spectrophotometry, after the microcomputer system processing calculation directly display phosphate content (in P).
25	sulfide	In the acid solution containing high iron ions, the chromogen directly reacts with sulfur ions to produce colored substances. The color depth of colored substances is proportional to the concentration of sulfur ions, and then the absorbance is measured by spectrophotometry, and the sulfide content (mg/L) is directly displayed after calculation by the microcomputer system.
26	codec	Under acidic conditions, potassium permanganate reacts with reducing substances in water in a boiling water bath for a certain time, and the content of remaining potassium permanganate is directly determined. By detecting the absorbance, the instrument automatically transforms the permanganate index value (CODMn) (mg/L).
27	anion	Methyl blue acts with anionic surfactant to produce blue salts. After being extracted by chloroform, its chromaticity is proportional to its concentration under certain conditions. Its absorbance is measured by spectrophotometry, and the anion content (mg/L) is directly displayed after calculation by micro-computer system.
28	aniline	Aniline is diazonidated under acidic conditions, and then coupled with a chromogen to produce a purplish red dye, which is absorbed at a certain wavelength, and the absorbance is calculated by the microcomputer system to directly display the aniline content (mg/L).
29	total hardness	Canada2+And Mg2+Both ions can form a 1:1 complex with ACBK. At the wavelength of 468nm, at this wavelength and the optimal operating conditions, Ca2+And Mg2+The total content ranged from 0 to 3 mol of 10-3mol · L, in the concentration range consistent with Beer’s law.
30	ozone	DPD for residual ozone requires the presence of I in the water2, Can anyway completely, eliminate interference, colorimetric determination.
31	dissolved oxygen	MnSO ₄ and formaldehyde oxime solution were added to the water sample. In the alkaline solution of PH 10.0~11.0, manganese (II) was oxidized by dissolved oxygen to manganese (IV), forming a brown complex with formaldehyde oxime.
32	ph	The PH value is the pH index of the water, which can be added to the water sample to determine the PH value of the water sample
33	formaldehyde	Formaldehyde in the formation of a yellow compound with acetylacetone in the presence of excess ammonium salt, which has maximum absorption at 414mm wavelength. The absorbance of the colored material was essentially unchanged within 3h.
34	aluminium	In the range of pH 6.7 to 7.0, aluminum in the presence of polyethylene glycol octyphenyl ether and bromohexadylpyridine reacted with chromium green S to produce turquoise quaternary micelles, colorimetric quantification.
35	silver	In the presence of 1% sodium dodecyl sulfate, silver with 3,5-Br in acetate buffer medium from pH 4.5 to 8.52-PADAP generates a stable 1:2 purple complex whose absorbance is proportional to the concentration of silver.
36	chlorid	The reaction of chloride ion and mercury thiocyanate leads to difficult ionizing mercuric dichloride molecules, and the replaced thiocyanate ion reacts with ferric iron ion to form an orange-red iron thiocyanate complex, which is determined by spectrophotometry according to the depth of color.
37	alkalinity	In a certain buffer solution, when the concentration of the methyl orange indicator is unchanged, the alkaline substance in the water reacts with the methyl orange indicator to produce the colored substance. The color depth and concentration comply with Langblebeer’s law
38	available chlorine	The hypochlorite in the bleaching powder is used to produce hypochlorite in acidic medium. Potassium iodide can be quantified in acidic medium, and the precipitated iodine and starch show a specific blue. According to its chroma, the colorimetric measurement can be made, so as to know the content of effective chlorine
39	antimony	With acetone as solvent, in the presence of potassium iodide, antimony (III) and 2- (5-bromo-2-pyridine azo) -5-diethylaminophol

3. Main technical parameters of the instrument

The product is constantly optimized and upgraded, and the company reserves the product indicators described in the manual, and has the right to upgrade and improve at any time without further notice.

1. Scope of measurement

order number	project	measuring range	order number	project	measuring range
1	cod	COD L:0~150mg/L COD M:150~1500mg/L COD H:1500~15000mg/L	2	ammonia nitrogen	Ammonia nitrogen L: 0 ~ 5 mg/L Ammonia nitrogen H: 5 ~ 50 mg/L
3	total phosphorus	Total phosphorus, L:0~1.6mg/L Total phosphorus H: 1.6 to 20 mg/L	4	total nitrogen	Total nitrogen: L: 0 to 20 mg/L Total nitrogen H: 20-100 mg/L
5	suspended matter	0~500mg/L	6	turbidity	Tidity L: 0 ~ 100 NTU Tidity H: 100 ~ 1000 NTU
7	tone	0~500 Degrees	8	copper	Copper L: 0 ~ 5 mg/L Copper H: 5 ~ 50 mg/L (In Cu)
9	nickel	0~4mg/L	10	hexavalent chromium	Hexavalent chromium L: 0 ~ 1 mg/L Hexavalent chromium H: 1 ~ 5 mg/L (In Cr)
11	Total chromium	Total Chr. L: 0 ~ 1 mg/L Total chromium H: 1 to 5 mg/L (in Cr)	12	iron	Iron L: 0 ~ 5 mg/L Iron H: 5 ~ 50 mg/L (in Fe)
13	zinc	Zinc L: 0 ~ 3 mg/L Zinc H: 3-15 mg/L (in Zn)	14	manganese	0~5mg/L
15	sulfate	0~200mg/L	16	nitrite	no2L:0~0.2mg/L no2.2H：0~1mg/L
17	chlorine dioxide	Cros2L：0~5mg/L Cros2H：5~10mg/L	18	Residue chlorine, total chlorine	Residual chlorine, L:0~2.5mg/L Residual chlorine H: 2.5-10 mg / L
19	fluoride	Fluoride L: 0 to 2 mg/L Fluoride H: 2 to 10 mg/L	20	silica	0~5mg/L
21	prussiate	Cyanide L:0~0.5mg/L Cyanide H: 0 ~ 1 mg/L.5	22	nitrate	0~20mg/L
23	Volatil	Volatile phenol L: 0 ~ 5 mg/L Volatile phenol H: 5 to 10 mg/L	24	phosphate	Phosphate L: 0 to 2 mg/L Phosphate H: 2 to 20 mg/L
25	sulfide	Sulfide, L:0~0.8mg/L Sulphide H: 0 to 4 mg/L.8	26	codec	CODmn L:0~5mg/L CODmn H:5~10mg/L
27	anion	Anion L: 0-1 mg/L Anion H: 1-2 mg/L	28	aniline	Aniline L: 0 to 2 mg/L Aniline H: 2 to 20 mg/L
29	total hardness	Total hardness L: 0 ~ 5 mg/L Total hardness M: 5 ~ 50 mg/L Total hardness H: 50 ~ 400 mg/L	30	ozone	Ozone L: 0 ~ 3 mg / L Ozone H: 3 ~ 30 mg / L
31	ph	PHL: 6~7.8 PHH：8~9.6	32	dissolved oxygen	Dissolved oxygen L: 0 to 10 mg/L Dissolved oxygen H: from 10 to 100 mg/L
33	formaldehyde	Formaldehyde L: 0 ~ 5 mg/L Formaldehyde H: 5 to 50 mg/L	34	aluminium	Aluminum L: 0 ~ 2 mg/L Aluminum H: 2 ~ 20 mg/L
35	silver	Silver L: 0 ~ 1 mg/L Silver H: 1 ~ 10 mg / L	36	chlorid	Chloride L: 0 to 5 mg/L Chloride H: 5 to 50 mg/L
37	alkalinity	Alkalinity L: 0 ~ 100 mg / L Alkalinity H: 100 ~ 1000 mg / L	38	available chlorine	Effective chlorine L: 0-10 mg / L Effective chlorine H: 10-100 mg/L
39	antimony	0~10mg/L

Working parameters

order number	project	parameter	order number	project	parameter
1	indicating error	± 5%, repeatability: 3%	8	weight	2.6 Kg (host)
2	Anti-chlorine interference	2000 mg/L (COD Determination)	9	power dissipation	Host <20W
3	Optical stability	Values drift by less than 0.005A in 20min	10	outline dimension	330mm*250mm*125 mm (Long, width, X height)
4	Light source life	100000 Hours	11	operation interface	All-Chinese / English (optional)
5	Curve number	Article 200	12	ambient temperature	5℃～40℃
6	storage data	50000	13	relative humidity:	≤85%RH
7	By way of color	Colorimetric digestion of the integrated tube	14	Power Supply Voltage	12V  2A
Instrument working environment: no significant vibration and electromagnetic interference, to avoid direct sunlight.

Conclusion of the our Multi-Parameter Water Quality Measuring Instrument

The Multi-Parameter Water Quality Measuring Instrument by Zero Instrument a versatile tool designed for precise water quality assessment. It utilizes visible spectrophotometric methods, features a large LCD display for clear data presentation, and offers comprehensive data management capabilities. The instrument supports a wide range of measurements, including COD, ammonia nitrogen, total phosphorus, and more, with integrated digestion and color development processes. Advanced features such as PID temperature control and long-life light sources ensure reliable performance, making it suitable for environmental monitoring, industrial applications, and research purposes. Regular calibration and maintenance are essential to maintain its accuracy and effectiveness.