Electrochemistry

Model 250 Meter

The Model 250 provides the easiest, most accurate measurements available, combining a research-grade pH meter, ion meter and conductivity meter in one!

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Mode	Ion	pH	mV
Ranges	1.00 x10-9 to 9.99 x 109	-2.000 to 20.000	±1800.0
Resolution	1, 2, 3 significant digits	0.001/0.01/0.1	0.1/1
Relative Accuracy	± 0.17n%	±0.002	±0.1
Temperature Measurement	-5.0 to 105°C; relative accuracy, ±0.3°C	Temperature Compensation	Manual Automatic, -5.0 to 105°C
Slope Control	Automatic 90 to 105%, Manual 80 to 110%
Environmental Conditions	15° to 40°C, 0 to 90% Relative Humidity
Conductivity Range	0.01 to 300,000µS (depending on cell constant)
Relative Accuracy	0.5% of reading
Salinity Ranges	Autoranging, 0.01 to 70ppt NaCl equivalent salinity Autoranging, 0.01 to 42ppt practical salinity
Resistivity	30ohm•cm to 1, 10 or 20megohm•cm (at cell constants of 10, 1, 0.5cm-1 respectively). Autoranging units; readout in ohm•cm, kilohm•cm, or megohm•cm. Fixed units: kilohm•cm
Total Dissolved Solids	0.005 to 1.5x105 mg/L (at 0.5 solids factor, depending on cell constant)
Temp Coefficient	Software configurable; Off or On 0 to 4%/°C
Power Requirements:	115V 50/60Hz (Additional voltages available)
Meter with kit includes:	Meter, power supply, high performance glass-body pH/ATC (300729.1) electrode, electrode arm and operation manual.
The Meter only includes:	Meter, power supply, electrode arm and operation manual.

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