Oakton

High /-0.01 pH accuracy at an economical price Convenient, compact design  Up to five-point push-button calibration with autobuffer recognition  Displays pH or mV and temperature with the press of a button Meter Type Portable Display type LCD Min pH (pH) 0 Max pH (pH) 14 pH Resolution 0.01 or 0.1 pH Accuracy ±0.01 pH Buffer Recognition DIN, NIST and USA Calibration Up to 5 points Min Temperature (° C) -10 Max Temperature (° C) 110 Min Temperature (° F) 14 Max Temperature (° F) 230 Temperature compensation Automatic Battery 4 x AAA batteries (included) Battery life (hr) 700 Width (cm) 8.5725 Height (cm) 4.28625 Width (in) 3 3/8 Height (in) 1 11/16 > Each Unit Includes ATC probe Protective rubber boot Batteries. “All-in-one” pH electrode pH buffer solutions Sample bottles Rinse bottle, Carrying case

Intuitive, user-friendly icons — electrode status displays pH slope  Grip-Clip™ electrode holder quickly and easily secures electrode to side of beaker or container  USB or RS-232 output for up to 500 data sets  Extended battery life or optional universal power adapter  Built-in stand with wall mount option allows for easy benchtop measurement or storage Meter Type Portable Display type Backlit LCD Min pH (pH) -2 Max pH (pH) 16 pH Resolution 0.01 pH Accuracy ±0.01 Buffer Recognition DIN, NIST, USA, and custom Calibration Up to 6 points Min mV (mV) -2000 Max mV (mV) 2000 mV Resolution 0.1 or 1 mV mV Accuracy ±0.2 Max Temperature (° C) 45 Interface RS-232 and USB Waterproof Yes Battery 2 x AA batteries (included) Battery life (hr) 500 Width (cm) 7.9375 Height (cm) 5.715 Width (in) 3 1/8 Length (in) 6 1/2 Height (in) 2 1/4 > Each Unit Includes All-in-one pH/temperature (model 35808-71) Grip-Clip probe holder Two AA batteries

Intuitive, user-friendly icons — electrode status displays pH slope  Grip-Clip™ electrode holder quickly and easily secures electrode to side of beaker or container  USB or RS-232 output for up to 500 data sets  Extended battery life or optional universal power adapter  Built-in stand with wall mount option allows for easy benchtop measurement or storage Meter Type Portable Display type Backlit LCD Min pH (pH) -2 Max pH (pH) 16 pH Resolution 0.01 pH Accuracy ±0.01 Buffer Recognition DIN, NIST, USA, and custom Calibration Up to 6 points Min mV (mV) -2000 Max mV (mV) 2000 mV Resolution 0.1 or 1 mV mV Accuracy ±0.2 Min Temperature (° C) -10 Max Temperature (° C) 110 Interface RS-232 and USB Waterproof Yes Battery 2 x AA batteries (included) Battery life (hr) 500 Width (cm) 7.9375 Height (cm) 5.715 Width (in) 3 1/8 Height (in) 2 1/4 > Each Unit Includes Grip-Clip probe holder Two AA batteries

Intuitive, user-friendly icons — electrode status displays pH slope  Grip-Clip™ electrode holder quickly and easily secures electrode to side of beaker or container  USB or RS-232 output for up to 500 data sets  Extended battery life or optional universal power adapter  Built-in stand with wall mount option allows for easy benchtop measurement or storage Meter Type Portable Display type Backlit LCD Min pH (pH) -2 Max pH (pH) 16 pH Resolution 0.01 pH Accuracy ±0.01 Buffer Recognition DIN, NIST, USA, and custom Calibration Up to 6 points Min mV (mV) -2000 Max mV (mV) 2000 mV Resolution 0.1 or 1 mV mV Accuracy ±0.2 Min Temperature (° C) -10 Max Temperature (° C) 110 Interface RS-232 and USB Waterproof Yes Battery 2 x AA batteries (included) Battery life (hr) 500 Width (cm) 7.9375 Height (cm) 5.715 Width (in) 3 1/8 Height (in) 2 1/4 > Each Unit Includes All-in-one pH/temperature (model 35808-71) Grip-Clip probe holder Buffers and electrode storage solution Two AA batteries Hard carrying case

Intuitive, user-friendly icons—electrode status displays pH slope  Grip-Clip™ electrode holder quickly and easily secures electrode to side of beaker or container (for use with separate pH and conductivity/ATC probes)  Memory of 500 data sets and USB or RS-232 output for tranfer to PC  Extended battery life or optional universal power adapter  Built-in stand with wall mount allows for easy benchtop measurement or storage Meter Type Portable Display type Backlit LCD Min pH (pH) -2 Max pH (pH) 16 pH Resolution 0.01 pH Accuracy ±0.01 Min mV (mV) -2000 Max mV (mV) 2000 mV Resolution 0.1 or 1 mV mV Accuracy ±0.5 Max Conductivity 200 mS Conductivity Accuracy ±1% FS Min TDS 0 to 200 ppt Min Salinity 0 to 50 ppt Salinity Accuracy ±1% FS Max Temperature (° C) 45 Interface RS-232 and USB Waterproof Yes Battery 2 x AA batteries (included) Battery life (hr) 500 Width (cm) 7.9375 Height (cm) 5.715 Width (in) 3 1/8 Height (in) 2 1/4 > Each Unit Includes PC 450 meter Two AA batteries order probes separately

Intuitive, user-friendly icons—electrode status displays pH slope  Grip-Clip™ electrode holder quickly and easily secures electrode to side of beaker or container (for use with separate pH and conductivity/ATC probes)  Memory of 500 data sets and USB or RS-232 output for tranfer to PC  Extended battery life or optional universal power adapter  Built-in stand with wall mount allows for easy benchtop measurement or storage Display type Backlit LCD Min pH (pH) -2 Max pH (pH) 16 pH Resolution 0.01 pH Accuracy ±0.01 Min mV (mV) -2000 Max mV (mV) 2000 mV Resolution 0.1 or 1 mV mV Accuracy ±0.5 Max Conductivity 200 mS Conductivity Accuracy ±1% FS Min TDS 0 to 200 ppt Min Salinity 0 to 50 ppt Salinity Accuracy ±1% FS Max Temperature (° C) 45 Interface RS-232 and USB Waterproof Yes Battery 2 x AA batteries (included) Battery life (hr) 500 Width (cm) 7.9375 Height (cm) 5.715 Width (in) 3 1/8 Height (in) 2 1/4 > Each Unit Includes PC 450 meter, pH probe (35641-51) Conductivity/temperature cell K=1.0 (35808-50) Calibration solution Grip-clip electrode holder (35614-50) Two AA batteries Hard carrying case (35614-51).

Optical DO sensor eliminates costly, tiresome membranes and solutions  Durable waterproof and dustproof design with IP67 rating  Barometric pressure and salinity correction  Memory for up to 500 data sets with USB or RS-232 output to PC  Built-in stand allows for easy benchtop use  500 hours battery life, or optional universal power adapter Display type Backlit LCD Min pH (pH) -2 Max pH (pH) 16 pH Resolution 0.01 pH Accuracy ±0.01 Buffer Recognition DIN, NIST, USA, and custom Calibration Up to 6 points Min mV (mV) -2000 Max mV (mV) 2000 mV Resolution 0.01 mV mV Accuracy ±0.5% FS Min Dissolved Oxygen 0 to 20 ppm, 0 to 200% Dissolved Oxygen Resolution 0.1 ppm, 0.1% saturation Dissolved Oxygen Accuracy ±2% Min Temperature (° C) -10 Max Temperature (° C) 110 Min Temperature (° F) 14 Max Temperature (° F) 230 Interface RS-232 and USB Waterproof Yes Battery 2 x AA batteries (included) Battery life (hr) 500 Width (cm) 7.9375 Height (cm) 6.35 Width (in) 3 1/8 Height (in) 2 1/2 > Each Unit Includes PD 450 meter pH probe (35641-51) RDO probe (35640-51) Sensor cap (35640-51) Two AA batteries

Optical DO sensor eliminates costly, tiresome membranes and solutions  Durable waterproof and dustproof design with IP67 rating  Barometric pressure and salinity correction  Memory for up to 500 data sets with USB or RS-232 output to PC  Built-in stand allows for easy benchtop use  500 hours battery life, or optional universal power adapter Display type Backlit LCD Min pH (pH) -2 Max pH (pH) 16 pH Resolution 0.01 pH Accuracy ±0.01 Buffer Recognition DIN, NIST, USA, and custom Calibration Up to 6 points Min mV (mV) -2000 Max mV (mV) 2000 mV Resolution 0.01 mV mV Accuracy ±0.5% FS Min Dissolved Oxygen 0 to 20 ppm, 0 to 200% Dissolved Oxygen Resolution 0.1 ppm, 0.1% saturation Dissolved Oxygen Accuracy ±2% Min Temperature (° C) -10 Max Temperature (° C) 110 Min Temperature (° F) 14 Max Temperature (° F) 230 Interface RS-232 and USB Waterproof Yes Battery 2 x AA batteries (included) Battery life (hr) 500 Width (cm) 7.9375 Height (cm) 6.35 Width (in) 3 1/8 Height (in) 2 1/2 > Each Unit Includes PD 450 meter Two AA batteries.