Extech SDL100
pH/ORP/Temperature Datalogger

  • Dual display of pH or mV and Temperature
  • ATC or manual Temperature compensation
  • 3 point calibration ensures the best linearity and accuracy
  • Stores 99 readings manually and 20M readings via 2G SD card
  • User programmable sampling rate
  • Large backlit dual LCD
  • Built-in PC interface
  • Min/Max and Data Hold functions, Auto power off
  • Complete with 6 x AA batteries, SD card, hard carrying case, sample buffers, mini pH electrode (60120B), and Thermistor temperature probe (850188)
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Extech SDL100 Shown

Product Information
Datasheet 505 KB PDF
Manual 523 KB PDF
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The Extech SDL100 pH/ORP/Temperature Datalogger displays pH or mV and temperature on a dual backlit LCD and store data on an SD card in Excel format for easy transfer to a PC for analysis
Specification SDL100
pH Range 0 to 14pH 0.01pH ±(0.02pH + 2 digits)
ORP Range -1999mV to 1999mV 1mV ±(0.5% + 2 digits)
Temperature 32 to 149°F (0 to 65°C) 0.1° ±1.8°F/1°C)
Memory 20M data records using 2G SD card
Dimensions 7.2 x 2.9 x 1.9" (182 x 73 x 47.5mm)
Weight 16oz (455g)
Ordering Information
Model  Description Buy Online Price
SDL100 Extech SDL100 pH/ORP/Temperature Datalogger with SD card storage Buy Now $359.99
SDL100-NIST Extech SDL100NIST pH/ORP/Temperature Datalogger with SD card storage and NIST calibration Buy Now $459.99
Included Items
  • 1 SD card
  • 6 AA Batteries
  • 1 Set sample buffers
  • 1 Mini pH electrode (60120B)
  • 1 Thermistor temperature prtobe (850188)
  • 1 Hard carrying case
  • 1 Manual
Optional Accessories
Model  Description Buy Online Price
60120B Extech 60120B Electrode PH 120-C Combination BNC Buy Now Sale $37.22
(Reg. $50.99)
601500 Extech 601500 Standard Electrode (12 X 160 mm) Buy Now Sale $30.01
(Reg. $37.99)
601100 Extech 601100 Flat Surface Electrode (15 X 106 mm) Buy Now Sale $79.79
(Reg. $99.99)
850188 Extech 850188 Stainless Steel Temperature Probe For Model 407228 pH Kit Buy Now Sale $37.95
(Reg. $51.99)
153117 Extech 153117 117V AC Adaptor Buy Now Sale $20.79
(Reg. $31.99)
UA100-240 Extech UA100-240 Universal AC Adaptor 9V 1.3A output Buy Now Sale $26.06
(Reg. $32.99)

*NOTE: Items ordered with optional NIST calibration will require
approximately 10 days to complete the certification.