Brand: Erun 
Name: Portable water hardness tester
Model: ERUN-80-H2
Parameter: Hardness (measuring method: Acid chrome blue K method)
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)
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