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 environmental protection
Name: Portable water quality dissolved oxygen(DO) tester
Model Number:ERUN-90-D2
Parameters: dissolved oxygen DO (oxygen electrode method)

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.

Brand: Erun environmental protection
Name: Portable total phosphorus water quality analyzer
Model number：ERUN-90-P1
Parameters:Total P TP (ammonium molybdate)

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

Brand: Erun
Portable Fish Pond Aquaculture Water Quality Tester
number: ERUN-SP7
Parameters: PH, nitrite, ammonia, dissolved oxygen, etc.