HI3221 • HI3222 pH/ORP/ISE/Temperature Bench Meters HI3221 and HI3222 series are professional pH bench meters with a graphic LCD, designed to provide high accuracy and ease of use in laboratory settings as well as in harsh industrial conditions. HI3221 is a single input model measuring pH, ORP, or ISE and temperature utilizing a single channel. HI3222 is a dual input model measuring pH or ORP and temperature on channel 1; and ISE or ORP and temperature on channel 2. A relative mV feature is available for both models. See page 3.16 HI3512 pH/ORP/ISE/EC/Resistivity/TDS/NaCl/Temperature Bench Meter HI3512 is a dual input professional pH/ORP/ISE/EC/Resistivity/TDS/NaCl/Temperature bench meter with a graphic LCD designed to provide high accuracy and ease of use both in the laboratory as well as in harsh industrial conditions. This instrument is a dual input model measuring pH, ORP, or ISE and temperature on channel 1; and EC, Resistivity, TDS, and Salinity (utilizing an EC probe) on channel 2. A Relative mV feature is also available. See page 7.30 HI3220 pH/ORP/Temperature Bench Meter HI3220 is a professional pH/ORP/Temperature bench meter with a graphic LCD designed to provide high accuracy and ease of use both in laboratory settings as well as in harsh industrial conditions. A Relative mV feature is also available. See page 2.22 | www.hannainst.com New xxiv Reintroduction Reintroduction Reintroduction
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