Water quality testing instrument for drinking water supply stations_laboratory water quality analyzer of secondary water supply plant

The contents of project

1、Parameters and indicators that need to be tested for the quality of secondary water supply：

（1）Must test items

Chromaticity, turbidity, odor and visible substances to the naked eye, pH, total coliforms, aerobic bacterial count, residual chlorine.

（2）Select testing items

Total hardness, chloride, nitrate nitrogen, volatile phenols, cyanide, arsenic, hexavalent chrome, iron, manganese, lead, UV intensity.

（3）Additional testing items

Ammonia nitrogen, nitrite nitrogen, permanganate index.

2、Technical Parameters of water quality laboratory testing instruments of secondary water supply plant：

Serial No.	Items	Measuring range	Unit	Maximum deviation	Analysis methods	Standard basis
1	chromaticity	5-500	PCU	3%（F.S.）	Platinum cobalt standard colorimetric method	GB/T 5750.4
2	turbidity	0-400	NTU	≤2%(F.S.)	Scattering method - Formazine standard	GB/T 5750.4
3	pH	0.00-14.00	/	±0.1	Glass electrode method	GB/T 5750.4
4	total coliforms	——	pcs/L	——	Multi tube fermentation method	GB/T 5750.12
5	aerobic bacterial count	——	pcs/L	——	Plate count method	GB/T 5750.12
6	residual chlorine	0.02-10.00	mg/L	5%（F.S.）	Titrimetric method using N,N-diethyl-1,4-phenylenediamine	GB/T 5750.11
7	total hardness	0.1-500.0	mg/L	5%（F.S.）	EDTA acid chrome blue K method	GB/T 5750.4
8	chlorine ions	0.20-100.0	mg/L	5%（F.S.）	Ammonium thiocyanate spectrophotometric method	GB/T 29340
9	nitrate nitrogen	0.02-10.0	mg/L	0.1 or 5%	thymol spectrophotometric method	GB/T 5750.5
10	volatile phenols	0.20-10.0	mg/L	5%（F.S.）	4-aminoantipyrine direct spectrophotometric method	GB/T 5750.4
11	cyanide	0.01-0.50	mg/L	5%（F.S.）	Isonicotinate pyrazolone spectrophotometric method	GB/T 5750.5
12	arsenic	0.004-0.500	mg/L	5%（F.S.）	Zinc sulfuric acid system new silver salt spectrophotometric method	GB/T 5750.6
13	hexavalent chrome	0.01-1.00	mg/L	5%（F.S.）	diphenylcarbazide spectrophotometric method	GB/T 5750.6
14	iron	0.0-10.0	mg/L	5%（F.S.）	Phenanthroline spectrophotometric method	GB/T 5750.6
15	manganese	0.01-5.00	mg/L	5%（F.S.）	Ammonium persulfate spectrophotometric method	GB/T 5750.6
16	lead	0.01-0.50	mg/L	5%（F.S.）	Spectrophotometric method with dithizonc	GB/T 5750.6
17	ammonia nitrogen	0.02-25.00	mg/L	3%（F.S.）	Nessler's reagent spectrophotometric method	GB/T 5750.5
18	nitrate nitrogen	0.02-5.00	mg/L	0.05 or 5%	Thymol spectrophotometric method	GB/T 5750.5
19	permanganate index	0.00-10.00	mg/L	0.2 or 5%	Acidic potassium permanganate spectrophotometric method	GB/T 5750.7

3、List of water quality laboratory testing instruments of secondary water supply plant：

Serial No.

Part Number

Name

Items

Pictures

ERUN-ST7

Laboratory benchtop multi-parameter water quality analyzer

chromaticity, turbidity, pH, residual chlorine, total hardness, chloride, nitrate nitrogen, volatile phenols, cyanide, arsenic, hexavalent chrome, iron, manganese, lead, ammonia nitrogen, nitrite nitrogen, permanganate index

Laboratory benchtop multi-parameter water quality analyzer of secondary water supply plant

ERUN-SP-MD690

Portable water quality microbiological tester

total coliforms, aerobic bacterial count

Note：Analysis parameter items can be flexibly combined and selected according to the customer's own needs.

4、Other parts list of water quality laboratory testing instruments of secondary water supply plant：

Serial No.	Name	Specifications	Quantity
1	Colorimetric tube	Ф25×95mm	10
2	Test tube rack	White	2
3	Pipette gun	Minimum graduation 0.1mL	1
4	Cuvette	50×25×70mm	2
5	Lens hood	black	1
6	residual chlorine reagent	100 times/set	1
7	total hardness reagent	100 times/set	1
8	chloride reagent	50 times/set	1
9	nitrate nitrogen reagent	100 times/set	1
10	volatile phenols reagent	100 times/set	1
11	cyanide reagent	50 times/set	1
12	arsenic reagent	50 times/set	1
13	hexavalent chrome reagent	100 times/set	1
14	iron reagent	50 times/set	1
15	manganese reagent	50 times/set	1
16	lead reagent	50 times/set	1
17	ammonia nitrogen reagent	200 times/set	1
18	nitrite nitrogen reagent	100 times/set	1
19	permanganate index reagent	100 times/set	1
20	water bath	Constant temperature, resolution 0.1 ℃	1
21	biochemical incubator	ERUN-SHX100	1
22	temperature electrode	/	1
23	pH composite electrode	/	1
24	chargers and charging cables	/	1
25	USB cable	/	1
26	product manual	/	1
27	product certificate /product warranty card	/	1