Model 220
Research-grade pH and conductivity measurements in one meter

• Simultaneous pH and conductivity measurements, even in the same solution!
• Offers conductivity, NaCl salinity, practical salinity, resistivity and Total Dissolved Solids
• Improved conductivity measurements with 4-cell conductivity and multiple standards
• Three electrode inputs
• Replatinizing circuit for renewing your conductivity cells
• Fully compliant with the new USP 23 conductivity protocol
• Standardizes in all conductivity modes

Downloads		Other
literature manual		buy accessories free electrode or rebate offer request info

Conductivity Range	0.01 to 300,000 µS/cm (depending on cell constant)
Resolution	1, 2 or 3 significant figures
Accuracy	± 0.5% of reading
NaCl Equivalent Salinity	Autoranging, 0.01 to 70ppt
Practical Salinity	Autoranging, 0.01 to 42ppt
Resistivity	Autoranging, 30 ohm•cm to 20 Megohm•cm (depending on cell constant)
Temperature Correction	Off or On, 0 to 4%/°C
Excitation Frequency	225 Hz
Replatinizing Circuit	2.5V, open circuit; 7.5mA, short circuit
Modes	pH	mV	Temp
Range	-2.000 to 20.000	±1800.0	-5.0 to 105.0°C
Resolution	0.1/0.01/0.001	1/0.1	0.1°C
Accuracy	±0.002	±0.1	0.3°C
Automatic Temperature Compensation	Automatic or manual from -5 to 105°C.
Slope Control	Automatic 90 to 105% Manual, 80 to 110%
Environmental Conditions	15° to 40°C, 0-90% RH
Power Requirements:	115V 50/60Hz (Additional voltages available)
Ordering Information
Meter with kit includes:	Meter, power supply, high performance glass-bodypH/ATC "3-in-1" electrode, electrode arm and operation manual.
Meter only includes:	Meter, power supply, electrode arm and operation manual.

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