Extech PH220-C
Waterproof Palm pH Meter with Temperature

Compact size pH meter with cabled pH electrode

  • Large LCD displays pH or mV and Temperature simultaneously
  • Microprocessor provides for Automatic Buffer recognition
  • Memory stores 25 readings
  • Automatic Temperature Compensation
  • Unit is completely waterproof when electrode is connected to the meter
  • Low Battery indicator and Auto Power off
  • Standard electrode with 39” cable
  • For model with Stick pH Electrode see: Extech PH220-S
Click for larger image - Extech PH220-CClick for larger image
Extech PH220-C

Product Information
Datasheet 304 KB
Manual 245 KB
PDF Help
Temperature Range (Resolution) 32 to 212°F (<100°;1 ° >100°) ± 1.0°F
Accuracy 0 to 100°C (0.1°<100°;1°>100°) ± 0.5°C
(Note 1: Accuracy does not include
pH buffer temperature coefficient
Note 2: Accuracy specified
from 0.02pH to 13.98pH)
Range (Resolution) 0.00 to 14.00pH (0.01pH)
Accuracy ± 0.02pH
mV -999 to 999mV
Temperature Compensation 32 to 212°F (0-100°C) Automatic ‘ATC’
Power 9 volt alkaline battery
Display Dual LCD display for simultaneous pH and temperature
Over-range or open indication Displays "HHH" for over-range or open input conditions
Displays “LLL” for under-range
pH Calibration points 4.00, 7.00, 10.00 (1, 2, or 3 point calibration can be
Auto Power OFF 10 minutes from last key-press (can be disabled)
Ordering Information
Model Description Buy Online Price
PH220-CExtech PH220-C pH Meter with 39-inch Cabled Electrode Buy NowSale $141.09
(Reg. $169.99)
Optional Configurations
PH220-SExtech PH220-S pH Meter with Stick Electrode Buy NowSale $132.59
(Reg. $169.99)
Included Accessories
  • 1 - Standard electrode with 39” cable
  • 1 - Suction cup holder
  • 1 - Clip holder
  • 1 - Protective holster
  • 2 - pH buffers
  • 1 - 9V battery
Optional Accessories
6015WCExtech 6015WC Waterproof pH Electrode w/ 39" Cable for Palm pH Meter Buy NowSale $37.95
(Reg. $55.99)
6012WSExtech 6012WS Waterproof Stick Type pH Electrode for Palm pH Meter Buy NowSale $38.68
(Reg. $52.99)
PH103Extech PH103 Tripak Buffer Pouches (4, 7 and 10pH plus rinse solution) Buy NowSale $24.48
(Reg. $30.99)
PH4-PExtech PH4-P Pint Size Bottles with Pre-made 4pH Buffer Solution (2 Bottles) Buy NowSale $18.95
(Reg. $23.99)
PH7-PExtech PH7-P Pint Size Bottles with Pre-made 7pH Buffer Solution (2 Bottles) Buy NowSale $18.95
(Reg. $23.99)
PH10-PExtech PH10-P Pint Size Bottles with Pre-made 10pH Buffer Solution (2 Bottles) Buy NowSale $18.95
(Reg. $23.99)

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