Bench Meters For professional dissolved oxygen (DO) measurements, Hanna offers the HI 2400 - an essential instrument for testing pharmaceutical and food products as well as for monitoring in water treatment plants. This meter can be used Hanna's research grade bench meter line includes the HI 4421. This product not only measures DO, but also BOD (an indication of the biodegradable organic material present in a sample of water), OUR and SOUR (both used to determine the oxygen consumption or respiration rate). The HI 4421 also incorporates an intuitive menu system to help streamline your workflow process and provide accurate measurements quickly and efficiently.
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in any laboratory and for any type of water, as it allows measurement compensation both for altitude salinity factors. This meter is supplied with a polarographic sensor which measures the current generated by the reaction of O2 with Ag, for enhanced stability.
