Best Benchtop pH Meter
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Best Benchtop pH Meter
Description
Best Benchtop pH Meter
Best Benchtop pH Meter
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During the pH mode, Up to 5 points push-button calibration with auto-buffer recognition |
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Selectable pH buffer standards and temperature units. |
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Automatically calculates and displays electrode slope after calibration. |
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During the ion mode, 2 to 5 points push-button calibration from low to high concentrations |
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Direct readout ion concentration simplifies the elaborate measurement process. |
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Automatic Temperature Compensation (ATC) ensures highly accurate measurements over the entire range. |
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Automatic endpoint function freezes the stable measured values for easy reading and recording data. |
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Calibration due reminder prompts you to calibrate the meter regularly. |
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Help message as a operational guide to helps you understand how to use meter. |
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Setup menu lets user customizes buffer standards, calibration points, stability conditions, resolution, |
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measurement units, date and time to meet measurement requirements. |
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Reset function can resumes all settings to factory default values. |
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Built-in real-time clock stamps stored data to meets GLP standards. |
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Stored data can be transferred into computer via USB communication interface |
| MODEL | LM-40 |
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SPECIFICATION |
MAKE | LAB |
|---|---|---|
| pH Range & Accuracy | -2.000 - 20.000pH & ±0.002pH | |
| Resolution | 0.001,0.01,0.1pH ( Selectable ) | |
| Ion Concentration Range | 0.001-19999 ppm,mg/L,mol/L (Selectable Depending on meas. Range of Ion Selective Electrode) | |
| Ion Concentration Accuracy | ±0.5% Full Scale ( Monovalent),±1% Full Scale (Divalent) | |
| mV Range & mV Accuracy | -.11999.9 mV & ±0.2mV | |
| Resolution | 0.1/1mV, Selectable | |
| Temperature Range & Accuracy | 0-105°C, 32-221°F & ±0.5°C,±0.9T | |
| Calibration Points | Ion / pH : Up to 5 Points | |
| pH Buffer Groups | USA (011.68,4.01,7.00,10.01 ,12A5), NIST (pH1.68,4.01,6.86,9.18,12.45), DIN (011.09,4.65,6.79,923,12.7 OR User Define) | |
| Memory and Output | 500 data sets with Date/Time stamping, USB Communication interface. | |
| Connector & Hold Function | BNC & Selectable | |
| Temperature Compensation | 0-100t,32-212 F,Automatic or Manual | |
| Stability Conditions | Low or High, Selectable | |
| Calibration due reminSder | 1 to 31 days or Off | |
| Power Supply | DC 5V adapters, using AC 220V / 50Hz, | |
| Dimensions LxWxH (mm) & Weight | 210 x 188 x 60 & 1.2kg |
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pH Range
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-2.000 to I6.000pH
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pH Resolution
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±0.001pH
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pH Accuracy
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±0.002pH
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Calibration Points
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2 points, NIST(pH4.00/6.86/9.18) or USA(pH4.01/7.00/10.01]
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mV/ORP Range
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0 to ±1999.9mV
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mV/ORP Accuracy
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±0.2mV
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Temperature Compensation
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0.0 to 100.0°C, Manual or Automatic
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Conductivity Range
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0 to 1.999,19.99,199.9,1999 µ S, 19.99, 200.0mS
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Conductivity Accuracy
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± 0.5% F.S
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Calibration Points
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1 point per range
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Temperature Compensation
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0 to 50°C, Manual or Automatic
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Temperature Coefficient
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0 to 3.9% per°C
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Cell Constant
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0.1,1.0,10 adjustable
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TDS Range
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0 to 100 ppt, Max.200 ppt
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TDS Accuracy
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+1% F.S
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TDS Conversion Factor
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0.01 to 1.00, Default 0.67
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Salinity Range
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0 to 50 ppt, 0.00 to 5.00%
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Accuracy
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±0.5ppt, ±0.05%
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Resistivity Range and Accuracy
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0 to 100M, W± 1%F.S
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Temperature Range
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0.0 to 100.0°C,
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Temperature Accuracy
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±0.3°C,
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Memory & Output
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99 data sets with date/ time stamping, USB
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Power supply
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DC 9 V, using AC Adapter 220 VAC, 50 Hz
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Weight
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1.75 kg
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- COMBINATION |
ION SELECTIVE |
ELECTRODES |
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Electrodes |
Concentration Range ( molar) |
Limits (ppm) |
Temperature Ranget |
Main Interferences |
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Calcium [ Ca++ ] |
10-1 to 5.10-7 |
4,010 to 0.02 |
5 to 50 |
Ba, Al, Sr |
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Chloride [ Cl- ] |
1 to 5.10-5 |
35,500 to 1.8 |
5 to 50 |
I, Br, CN, S |
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Fluoride [ F- ] |
10-' to 10-6 |
1,900 to 0.02 |
5 to 50 |
OH |
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Nitrate [ NO3 ] |
1 to 7.10-6 |
62,000 to 0.4 |
5 to 50 |
CI, NO |
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Bromide [ Br ] |
1 to-5.10-6 |
81,000 to 0.4 |
5 to 50 |
I, S, CN |
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Sodium [Na'] |
1 to .10-5 |
23000 to 0.2 |
5 to 50 |
Li, K |
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Cadmium [ Cd++ ] |
1-1 to 10-6 |
11200 to 0.1 |
5 to 50 |
Ba, Cu, Ag, Hg |
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Iodide [ N ] |
1-1 to 10-5 |
127000 to 1.2 |
5 to 50 |
S, CN |
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