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

Brand: Erun Environmental protection

Name: Portable copper ion detector

Brand: Erun environmental protection
Name: Portable water quality copper(Cu)metal element content tester
Model Number:ERUN-90-C6
Parameters: copper (Cu) (Copper reagent spectrophotometry)

Brand: Erun Environmental protection

Name: Portable iron ion detector

Brand: Erun environmental protection
Name: Portable water quality iron (Fe) metal element content tester
Model Number:ERUN-90-I1
Parameters: iron (Fe) (Spectrophotometry)

Brand: Erun environmental protection
Name: Portable water quality turbidity tester
Model Number:ERUN-90-T4
Parameters: turbidity(NTU或FTU)(Scattering method)

Brand: Erun environmental protection
Name: Portable water quality chloride ion (chloride) tester
Model Number:ERUN-90-C4
Parameters: Chloride ion (spectrophotometric method-thiocyanate color ratio method)

Brand: Erun 
Portable water quality dissolved oxygen(DO) tester
Model :ERUN-SP7-A5
Parameters:DO(oxygen electrode method)

Brand: Erun
Portable water quality trace dissolved oxygen analyzer
Model: ERUN-SP3-A5
Parameter: (DO)

Brand: Erun 
Name: Portable Phosphate ions tester
Model: ERUN-SP5-E3
Parameter: phosphate

Brand: Erun
Portable water quality phosphate (phosphate ions) tester
Model : ERUN-SP7-E3
Parameter: Phosphate (phosphateions)

Brand: Erun environmental protection
Name: Portable water quality chemical oxygen demand COD analyzer
Model number：ERUN-97-C2
Erun environmental protection research and development, production of Portable water quality chemical oxygen demand COD analyzer, using manganese method to determine the COD in water, also known as CODMn or permanganate index, widely used in environmental monitoring, sewage treatment, universities, scientific research institutions and other departments.