Jenway 3540 Bench Combined pH and Conductivity Meter, supplied with glass combination pH electrode (924 005), glass conductivity probe (K= 1 027 013), electrode stand and holder, ATC probe (027 500), BNC shorting plug, pH buffers and UK power supply

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Technical Specification


pH range–2.000 to 20.000
pH resolution0.001/0.01/0.1
pH accuracy±0.003
Auto. buffer recognitionJenway, NIST, DIN and JIS
mV range±1999.9mV
mV resolution0.1mV
mV accuracy±0.2mV
Conductivity rangesAuto–selected from 0.01µS to 1.999S
Conductivity resolution0.01µS to 1mS
Conductivity accuracy±0.5% ±2 digits
Cell constant0.010 to 19.999
Automatic standard recognition10µS, 84µS, 1413µS, 12.88mS (with manual override)
TDS range6 auto–selected from 0 to 1999g/l
TDS resolution0.01mg/l to 1g/l
TDS accuracy±0.5% ±2 digits
EC ratio (TDS)0.50 to 0.80
Temperature range–10 to 105°C
Temperature resolution0.1°C
Temperature accuracy±0.5°C
ATC and manual0 to 100°C
Temperature coefficient0.00 to 4.00%/°C
Reference temperature18, 20, 25°C
Additional modesSalinity and resistivity
GLPCalibration reminder interval, operator and sample ID and security coded setup
OutputsAnalogue, RS232 and IrDA interface
ConnectorBNC (pH) and 7–pin DIN (conductivity)
Power9V AC ±10% @ 50/60Hz
Size (l x w x d)210 x 250 x 55mm
  • £1231.91

3540 Bench Combined Conductivity/pH Meter

• Simultaneous display of pH and conductivity
• 2 independent channels to prevent interference between probes
• Additional modes for resistivity, salinity, TDS and mV
• Data logger with auto save/print options
• Storage of up to 500 readings (250 for each mode)

The 3540 is ideal for use in all laboratories where pH and conductivity analyses are required. The setup menu gives quick and easy access to the whole range of instrument, pH and conductivity measurement options. Calibration of both channels is automatic, with the option to select 1, 2 or 3 calibration points. The pH channel can also display mV values if required.


    • SKU
    • Commodity Codes
  • Manufacturer
    Jenway (part of Cole Parmer)
  • Country of Origin
    United Kingdom
Part CodeDescriptionK ValueUnit
027 298Epoxy bodied conductivity cellK= 1470
027 801Epoxy bodied conductivity cellK= 0.1470
027 802Epoxy bodied conductivity cellK= 10470
027 013Glass bodiedK= 1Bench
027 113Epoxy bodiedK= 0.1Bench
027 177Glass bodied,flow-throughK= 1Bench
027 211Glass free/epoxyK= 0.1Bench
027 212Glass free/epoxyK= 1Bench
027 213Glass free/epoxyK= 10Bench
027 900Ultra-pure water conductivity probeK< 0.1Bench
027 502PTFE-coated ATC probe for use with aggressive/corrosive samplesN/A3540
Part CodeDescription
025 15612.88mS conductivity standard (500ml)
025 1381413µS conductivity standard (500ml)
025 16484µS conductivity standard (500ml)
025 13910µS conductivity standard (500ml)
025 1651382ppm TDS calibration standard (500ml)
025 157200mV redox standard (500ml)
025 158300mV standard (500ml)