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Press the button two times quickly in any given screen to achieve the displayed action
• No user calibration is required
Phosgene is displayed with roughly the same sensitivity as carbon tetrachloride
75" Diameter Pump - Not Compatible
10 to 25 °C
YSI Pro Plus Quatro w/ Flow Cell Rental Model 105 Press the button two timesThe YSI Professional Plus handheld has been discontinued as of March 31, 2021. The direct replacement is the ProQuatro multiparameter handheld. See the FAQ tab below or visit the ProQuatro page for more information. The Pro Plus multiparameter meter provides extreme flexibility for the measurement of a variety of combinations for dissolved oxygen, conductivity, specific conductance, salinity, resistivity, total dissolved solids (TDS), pH, ORP, pH ORP