Which brand is better for dissolved oxygen meters and COD meters?
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Which brands of dissolved oxygen meters and COD meters are considered to be of better quality?
HACH. However, for dissolved oxygen, HACH only provides values in PPM and PPB; for that purpose, ROSEMOUNT should be used
Upstairs, what do PPB and PPM mean? I’m not an expert.
This post was last edited by qugd on 2009-8-29 at 21:43. There are two types of dissolved oxygen measurements related to hashes: one is the type commonly used in water treatment processes, where values are expressed in ppm; the other is designed for use in pure water used in thermoelectric applications, where low concentrations of dissolved oxygen are measured in ppb levels, with a minimum detection capacity of 0.2 ppb. Both categories come in laboratory models and online models. COD analyzers are Hash’s strength, especially the online ones. CODmax is currently the only analyzer that meets Chinese national standards and has been recognized by the Environmental Protection Bureau. Sinopec recently purchased around 80 units through a contract this year. ppb: part per billion, one part in a billion; ppm: part per million, one part in a million
You can try ABB’s COD.
Our company is about to purchase a dissolved oxygen meter; we’ll learn about it first, thank you!
Either E+H or HACH will work; in my opinion, E+H offers better after-sales service