Water quality testing instrument of recirculating water laboratory

The contents of project

1、Routine testing items of industrial recirculating cooling water water quality testing instrument for laboratory：

Serial No.	Items	Indirect open cooling system	Indirect closed cooling system	Direct cooling system
Serial No.	Items	Indirect open cooling system	Indirect closed cooling system	Direct cooling system
1	pH（25℃）	Once a day	Once a day	Once a day
2	conductivity	Once a day	Once a day	Spot-check
3	turbidity	Once a day	Once a day	Once a day
4	suspended solids	Once to twice a month	Not tested	Once a day
5	total hardness	Once a day	Once a day or spot-check	Once a day
6	calcium hardness	Once a day	Once a day or spot-check	Once a day
7	total alkalinity	Once a day	Once a day or spot-check	Once a day
8	chlorine ions	Once a day	Once a day or spot-check	Once a day or spot-check
9	iron	Once a day	Once a day	Not tested
10	heterophic bacteria	Once a week	Once a day	Not tested
11	copper	Once a week	Spot-check	Not tested
12	oil	Spot-check	Not tested	Once a day
13	drug concentration	Once a day	Once a day	Not tested
14	residual chlorine	Once a day	Depending on the medication	No need for testing
15	NH3-N	Once a week	Spot-check	Not tested
16	COD	Once a week	Not tested	Not tested
Note： a、Copper analysis is only applicable to recirculating cooling water system containing copper materials。 b、Oil analysis is only applicable to the direct cooling system of steelmaking and rolling equipment; The intermittent cooling open system of the refining unit is operated once a day. c、NH3-N testing is only applicable to recirculating cooling water system with the possibility of ammonia leakage and the use of recycled water as supplementary water. d、COD conducts spot checks on the direct cooling system of steelmaking and rolling equipment, and conducts daily analysis on the indirect open cooling system of refining equipment.

2、Technical Parameters of industrial recirculating cooling water water quality testing instrument for laboratory：

Serial No.	Items	Measuring range	Unit	Maximum deviation	Analysis methods	Standard basis
1	pH（25℃）	0.00-14.00	——	0.1±0.1	Glass electrode method	GB/T 6904
2	conductivity	0.00µS/cm-199.9mS/cm	mS/cm	±1.0% (F.S.)	Potassium chloride electrode method	GB/T 6908
3	turbidity	0-400	NTU	≤2%(F.S.)	Scattering method-formazine standard	GB/T 12151
4	suspended solids	5-1000	mg/L	≤2%(F.S.)	Light scattering method	——
5	total hardness	0.1-500.0	mg/L	5%(F.S.)	EDTA acid chrome blue K method	GB/T 6909
6	total alkalinity	0-1000	mg/L	5%（F.S.）	Potentiometric titration	GB/T 15451
7	chlorine ions	0.20-100.0	mg/L	5%（F.S.）	Ammonium thiocyanide titration method	GB/T 29340
8	iron	0.0-10.0	mg/L	5%（F.S.）	1,10-phenanthroline spectrophotometry	GB/T 14427
9	heterophic bacteria	——	pcs/L	——	Plate counting method	——
10	copper	0.02-10.0	mg/L	5%（F.S.）	Sodium diethyldithiocarbamate spectrophotometry	GB/T 13689
11	oil	0～900.00	mg/L	RSD＜0.6%	Infrared photometry	GB/T 16488
12	residual chlorine	0.02-10.00	mg/L	5%（F.S.）	Titrimetric method using N,N-diethyl-1,4-phenylenediamine	HJ 585
13	NH3-N	0.02-250.00	mg/L	3%（F.S.）	Nessler's reagent spectrophotometric method	HJ 535
14	COD	5-20000	mg/L	5%（F.S.）	Dichromate method	GB 11914

3、List of industrial recirculating cooling water water quality testing instrument for laboratory：

Serial No.	Part Number	Name	Items	Pictures
1	ERUN-ST-MU97	Laboratory benchtop multi-parameter water quality analyzer	pH（25℃）、conductivity、turbidity、suspended solids、total hardness、total alkalinity、chlorine ions、iron、copper、residual chlorine、NH3-N、COD
2	ERUN-ST-OD380	Laboratory benchtop infrared spectrophotometer	oil
3	ERUN-SP-MD690	Portable water quality microbiological tester	heterophic bacteria

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

4、Other parts list of industrial recirculating cooling water water quality testing instrument for laboratory：

Serial No.	Name	Specifications	Quantity
1	Colorimetric tube	Ф25×95mm	10
2	Colorimetric tube	Ф16×110mm	10
3	Test tube rack	White	2
4	Pipette gun	Minimum graduation 0.1mL	1
5	Cuvette	50×25×70mm	2
6	Lens hood	Black	1
7	total hardness reagent	100 times/set	1
8	total alkalinity reagent	100 times/set	1
9	chlorine ions reagent	50 times/set	1
10	iron reagent	50 times/set	1
11	copper reagent	100 times/set	1
12	residual chlorine reagent	100 times/set	1
13	NH3-N reagent	200 times/set	1
14	COD reagent	200 times/set	1
15	benchtop multifunctional CNC digestion instrument	ERUN-DIG-16B	1
16	biochemical incubator	ERUN-SHX100	1
17	temperature electrode	/	1
18	pH composite electrode	/	1
19	conductivity electrode	/	1
20	chargers and charging cables	/	1
21	USB cable	/	1
22	instruction manual	/	1
23	Product certificate /Product warranty card	/	1

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

Industrial recirculating cooling water water quality testing instrument for laboratory

1、Routine testing items of industrial recirculating cooling water water quality testing instrument for laboratory：

2、Technical Parameters of industrial recirculating cooling water water quality testing instrument for laboratory：

3、List of industrial recirculating cooling water water quality testing instrument for laboratory：

4、Other parts list of industrial recirculating cooling water water quality testing instrument for laboratory：