Benchtop-Multi-parameter-Water-Quality-Meter
                     Benchtop Multi-parameter
Water Quality Meter 
 LMPWM-A40
www.labtron.com
[email protected]
Benchtop Multi-parameter Water Quality Meter LMPWM-A40
Benchtop Multi-parameter Water Quality Meter LMPWM-A40 with 7 inch TFT display 
measures pH, mV, relative mV, water hardness, and temperature and Ion concentration 
of the sample. With expanded memory, it stores and recalls up to 1000 readings. 
Calibration due reminder informs operator to calibrate the meter regularly.
Common features 
- Auto read feature to lock and read endpoint measurement
- Stability indicator to record stable measurement reading 
- Reset feature automatically sets all function to default condition
- Automatic interval readings, sends the measurement data to the 
computer/printer
- USB communication interface to transfer store data 
pH features
- 1-5 points push button calibration to automatically identify pH buffer
- Convenient to select pH buffer standard (USA/NIST/DIN) or custom calibration 
solutions
- Automatic temperature compensation, provides accurate readings over entire 
pH range 
- Automatic electrode diagnosis with pH slope, offset display 
- Alarm when pH readings are out of range
ORP features
- 1 point offset calibration, can adjust display value to known standard 
- Relative and absolute millivolt mode of measurement
Water Hardness feature
- 2 to 5 points calibration with high to low concentration
- Advanced measurements using different measurement units 
Ion features 
- 2 to 5 points calibration, when 8 concentration points are selected 
- Different concentration units like ppm, mg/l, mol/l, mmol/l for selection 
- Automatic recognition of ion selective electrode
- Different Ion measurement methods for selection 
- Calibration report with details of calibration standard and slope
Applications 
Used in multi-parameters based research testing , and quality analysis of water, other 
general liquids across water plants, food and beverages production units, laboratories, 
and institutes. 
Specication
Model no. LMPWM-A40
  
pH Mode
                                                 
pH range -2.00 to 20.00 pH
  
pH Accuracy ± 0.002 pH
  
pH Resolution  0.1/0.01/0.001 pH, selectable 
pH Calibration Points  1 to 5 Points 
USA (pH 4.0/7.00/10.01) or NIST (pH 4.01/6.86/9.18) 
pH Buffer Solutions  or DIN buffers 
                                             ORP Mode 
mV Range  ± 2000 mV 
mV Accuracy  ± 0.2 mV 
mV Resolution  0.1 mV, selectable 
mV Calibration Points  1 Point, only for relative mode 
                                             Ion Mode 
 
Ion measurement range  
0.01 to 30000 ppm, mg/l, mol/l, mmol/l (refer Range 
of ion selection )
Ion measurement  
 ±0.5% F.S (Monovalent), ±1% F.S (Divalent)
accuracy
 
Ion measurement  
 0.001/0.01/0.1/1
resolution
Ion measurement  
 2 to 5 points
calibration points
 
Ion measurement  0.001/0.01/0.1/1/10/100/10 00/10000 ppm, mg/L, 
calibration solutions mol/L
Ion measureme nt Direct re ading, Known addition, Known  
methods subtraction, Sample addition, Sample subtraction
                                              
Water Hardness Mode
Water hardness  0.05-200mmol/L, 0-1120°dH, 0-1404°e, 0-2000 °fH, 0-
measurement range 8000mg/L (Ca2+), 0~19999mg/L (CaCO3)
 
Water hardness  
±1% F.S
measurement accuracy
 
Water hardness  
0.001/0.01/0.1/1
measurement resolution  
Water hardness  
 2 to 5 pointscalibration points
Water hardness 
0.01/0.1/1/10/100 mmol/L
calibration solutions
Temperature Mode  
Temperature  
                                              0 to 105°, 32  to 212 °F
measurement range
Temperature  
 ± 0.5°C, ± 0.9°F
measurement accuracy
Temperature   0.1°C, 0.1°F
measurement resolution
Temperature   
measurement 1 point
calibration points  
 Common Features
Temperature                                               
0 to 100°C, 32 to 221°F
compensation range  
Temperature  
Manual or Automatic
compensation mode  
 
Data hold Manual or Automatic end point detection
  
Stability criteria Standard or high accuracy
  
Calibration due alarm 1 to 31 days
  
Interval readings  10/30/60 seconds, 10/30 minutes or o ff
Password protection  Ye s
Reset function  Ye s
Memory  Stores up to 1000 se ts dat a
Output  USB communication interfac e
Connector  BNC 
Display  7 inch TFT LCD displa y
Power supply  DC 12 V, AC adapter, AC 220 V, 50  Hz
Dimension (L×W×H)  240 × 220 × 80 mm 
Weight  1.7 kg 
 
  
Standard Accessories
  
Accessorie s No. Name  
1  pH electrode  
2  Temperature probe  
3  pH buffer pouches (4.01/7.0 0/10.01)
4  Ion selective electrode  
5  Ion calibration standard solution 100  and 1000 ppm
6  Water hardness electrode  
7  Water hardness calibratio n solutions
8  Electrode hold er
9 Power adapter
Optional Accessories
  
Accessories No. Name of the Ion electrode Range
    
1 NH4 [Ammonium] Electrode 5 × 10-6 ~1M
     
2 Br [Bromide] Electrode 5 × 10-6 ~1M
    
3  Ca [Calcium] Electrode
-7 
 5 × 10 ~1M 
4  Cl [Chloride] Electrode
-6 
 5 × 10 ~1M 
5  Cn [Cyanide] Electrode 5 × 10
-6 ~0.01M 
6  F [Fluoride] Electrode 1 × 10-6 M~Saturatio n
7  NO -6 3  [Nitrate] Electrode 7 × 10 ~1M 
8  Ag [Silver]  Electrode 1 × 10-7 ~1M 
9  Na [Sodium[ Electrode 1 × 10-5 ~1M 
10  Cd [Cadmium] Electrode 1 × 10-6 ~0.1M 
11  Cu [Cupric] Electrode 1 × 10-8 ~0.1M 
12  I [Iodide]  Electrode 5 × 10-8 ~1M 
13  Pb [Lead[  Electrode 1 × 10-8 ~0.1M 
    
14 K [Potassium] Electrode 1 × 10-6 ~1M
    
15 S [Sulphide] Electrode 1 × 10-7 ~1M
    
16 NH [Ammonia] Electrode 1 × 10-6 3 ~1M