Best Benchtop pH Meter
Best Benchtop pH Meter
Best Benchtop pH Meter
During the pH mode, Up to 5 points push-button calibration with auto-buffer recognition
Selectable pH buffer standards and temperature units.
Automatically calculates and displays electrode slope after calibration.
During the ion mode, 2 to 5 points push-button calibration from low to high concentrations
Direct readout ion concentration simplifies the elaborate measurement process.
Automatic Temperature Compensation (ATC) ensures highly accurate measurements over the entire range.
Automatic endpoint function freezes the stable measured values for easy reading and recording data.
Calibration due reminder prompts you to calibrate the meter regularly.
Help message as a operational guide to helps you understand how to use meter.
Setup menu lets user customizes buffer standards, calibration points, stability conditions, resolution,
measurement units, date and time to meet measurement requirements.
Reset function can resumes all settings to factory default values.
Built-in real-time clock stamps stored data to meets GLP standards.
Stored data can be transferred into computer via USB communication interface
MODEL
LM-40
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
pH Range
-2.000 to I6.000pH
pH Resolution
±0.001pH
pH Accuracy
±0.002pH
Calibration Points
2 points, NIST(pH4.00/6.86/9.18) or USA(pH4.01/7.00/10.01]
mV/ORP Range
0 to ±1999.9mV
mV/ORP Accuracy
±0.2mV
Temperature Compensation
0.0 to 100.0°C, Manual or Automatic
Conductivity Range
0 to 1.999,19.99,199.9,1999 µ S, 19.99, 200.0mS
Conductivity Accuracy
± 0.5% F.S
Calibration Points
1 point per range
Temperature Compensation
0 to 50°C, Manual or Automatic
Temperature Coefficient
0 to 3.9% per°C
Cell Constant
0.1,1.0,10 adjustable
TDS Range
0 to 100 ppt, Max.200 ppt
TDS Accuracy
+1% F.S
TDS Conversion Factor
0.01 to 1.00, Default 0.67
Salinity Range
0 to 50 ppt, 0.00 to 5.00%
Accuracy
±0.5ppt, ±0.05%
Resistivity Range and Accuracy
0 to 100M, W± 1%F.S
Temperature Range
0.0 to 100.0°C,
Temperature Accuracy
±0.3°C,
Memory & Output
99 data sets with date/ time stamping, USB
Power supply
DC 9 V, using AC Adapter 220 VAC, 50 Hz
Weight
1.75 kg
- COMBINATION
ION SELECTIVE
ELECTRODES
Electrodes
Concentration Range ( molar)
Limits (ppm)
Temperature Ranget
Main Interferences
Calcium [ Ca++ ]
10-1 to 5.10-7
4,010 to 0.02
5 to 50
Ba, Al, Sr
Chloride [ Cl- ]
1 to 5.10-5
35,500 to 1.8
5 to 50
I, Br, CN, S
Fluoride [ F- ]
10-' to 10-6
1,900 to 0.02
5 to 50
OH
Nitrate [ NO3 ]
1 to 7.10-6
62,000 to 0.4
5 to 50
CI, NO
Bromide [ Br ]
1 to-5.10-6
81,000 to 0.4
5 to 50
I, S, CN
Sodium [Na']
1 to .10-5
23000 to 0.2
5 to 50
Li, K
Cadmium [ Cd++ ]
1-1 to 10-6
11200 to 0.1
5 to 50
Ba, Cu, Ag, Hg
Iodide [ N ]
1-1 to 10-5
127000 to 1.2
5 to 50
S, CN