Urban and rural water station drinking water testing instrument_laboratory water quality analyzer of centralized water supply plant

The contents of project

Types of water	Analysis items	Daily water supply capacity (10000 cubic meters)
		≥50	＜50 - ≥10	＜10
		Testing frequency	Testing frequency	Testing frequency
Raw water	turbidity, chromaticity, visible substances, COD_Mn	Once a day	Once a day	Once a day
Raw water	aerobic bacterial count, total coliforms, thermotolerant coliforms	Once a week	Once a week	Once every two weeks
Tap water	turbidity, chromaticity, visible substances, COD_Mn, aerobic bacterial count, total coliforms, thermotolerant coliforms, residual chlorine	Once a day	Once a day	Once a day
Terminal tap water	turbidity, chromaticity, visible substances, COD_Mn, aerobic bacterial count, total coliforms, thermotolerant coliforms, residual chlorine	Twice a month	Twice a month	Twice a month
1、If total coliform bacteria are detected in the factory water and the water at the end of the pipeline network, further testing of fecal coliform bacteria is required. 2、The inspection items and frequency of harmful substances outside this table shall be determined by the local health administrative department and water supply unit according to specific circumstances.

Serial No.	Items	Limiting value	Standard basis
1	turbidity	1 NTU	GB 5749-2022 Standards for drinking water quality
2	chromaticity	15 PCU
3	COD_Mn	3 mg/L
4	aerobic bacterial count	100 MPN/mL or CFU/mL
5	total coliforms	Should not be detected
6	thermotolerant coliforms	Should not be detected
7	residual chlorine	Contact time with water≥30 min Tap water and terminal tap water≤2 mg/L Margin of tap water≥0.3 mg/L Margin of terminal tap water ≥0.05 mg/L

Serial No.	Items	Measuring range	Unit	Maximum deviation	Analysis methods	Standard basis
1	turbidity	0-400	NTU	≤2%(F.S.)	Scattering method - Formazine standard	GB/T 5750.4
2	chromaticity	5-500	PCU	3%（F.S.）	Platinum cobalt standard colorimetric method	GB/T 5750.4
3	COD_Mn	0.00-10.00	mg/L	0.2 or 5%	Acidic potassium permanganate spectrophotometric method	GB/T 5750.7
4	aerobic bacterial count	——	pcs/L	——	Plate count method	GB/T 5750.12
5	total coliforms	——	pcs/L	——	Multi tube fermentation method	GB/T 5750.12
6	thermotolerant coliforms	——	pcs/L	——	Multi tube fermentation method	GB/T 5750.12
7	residual chlorine	0.02-10.00	mg/L	5%（F.S.）	Titrimetric method using N,N-diethyl-1,4-phenylenediamine	GB/T 5750.11

Serial No.

Part Number

Name

Items

Pictures

ERUN-SP-M9000

Portable multi-parameter water quality tester

turbidity, chromaticity, COD_Mn, residual chlorine

城乡集中式供水单位水质化验室台式多参数水质测定仪

ERUN-SP-MD690

Portable water quality microbiological tester

aerobic bacterial count, total coliforms, thermotolerant coliforms

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

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	70×25×70mm	2
5	Lens hood	black	1
6	COD_Mn reagent	100 times/set	1
7	residual chlorine reagent	100 times/set	1
8	water bath	Constant temperature, resolution 0.1 ℃	1
9	biochemical incubator	ERUN-SHX100	1
10	temperature electrode	/	1
11	pH composite electrode	/	1
12	chargers and charging cables	/	1
13	USB cable	/	1
14	product manual	/	1
15	product certificate /product warranty card	/	1

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

Laboratory water quality analyzer of urban and rural drinking water plant