Brand: Erun
Portable multi-parameter water quality tester
number: ERUN-SP7
Parameters: COD, ammonia nitrogen, total phosphorus, total nitrogen, turbidity, copper, etc.
Brand:ERUN
Title: PH meter for water
Model:ERUN-SQ-DE4
Parameters:PH
Brand: Erun
Portable multi-parameter water quality analyzer
Model number:ERUN-SP6-8
Parameters: COD, copper,  other 35 parameters.
Brand: Erun 
Portable multi-parameter water quality meter
Model number: ERUN-SP4
Parameters:  PH, ORP, conductivity DO, ect.
Brand: Erun 
Name: Portable integrated multi-parameter water quality analyzer
Model number: ERUN-SP8-ASC
Parameters: Temperature, depth, PH, ORP, conductivity & salinity & TDS, turbidity, DO, chlorophyll,ect.
Brand: Erun
Portable water pollution monitoring equipment
Model number: ERUN-SP6-4
Parameters: COD, ammonia nitrogen, total phosphorus, total nitrogen.
Brand: Erun
Portable water pollution monitoring equipment
Model number: ERUN-SP7-4
Parameters: COD, ammonia nitrogen, total phosphorus, total nitrogen.
Brand: Erun
Portable Colorimetric Water Quality Tester
Model:ERUN-SP7-B5
Chromaticity (platinum-cobalt method)
Brand: Erun Environmental protection

Name: Portable full alkalinity tester

Brand: Erun environmental protection
Name: Portable water quality alkalinity tester
Model Number:ERUN-90-A3
Parameters: alkalinity (spectrophotometry)
Brand: Erun Environmental protection

Name: Portable water hardness tester
Model: ERUN-80-H2
Brand: Erun environmental protection
Name: Portable water quality hardness tester
Model number: ERUN-90-H2
Parameter: hardness (spectrophotometry--Acid chromium blue K method)
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