Extech PH100
ExStik pH Meter

  • Built-in Smart chip offers advanced functions and features to a stick style pH meter not found anywhere else
  • RENEW feature that tells you when it’s time to replace your pH electrode
  • CAL feature that tells you when it’s time to recalibrate your meter
  • Flat Surface pH electrode that is completely waterproof and rugged enough to withstand harsh environments
  • Analog bargraph originates at neutral point (pH 7.00) to conveniently view trends in acidity or alkalinity
  • Temperature measurements with Atomatic Temperature Compensation
  • 1, 2 or 3 point calibration automatically recognizes buffer solutions.
  • Order pH buffers separately
Click here for larger image - Extech PH100Click for larger image
Extech PH100

Product Information
Datasheet 241 KB
Manual 328 KB
PDF Help
Display Multifunction LCD with Bargraph
Operating conditions 0 to 50°C (32 to 122°F) / < 80% RH
Range and Accuracy 0.00 to 14.00 / ± 0.01pH typical
Temp. Compensation Automatic from 0 to 90°C (32 to 194°F)
Temperature Range -5 to 90°C (23 to 194°F)
Temperature Resolution 0.1° up to 99.9 then 1° thereafter
Temperature Accuracy ± 1°C/1.8°F [from -5 to 50°C (23 to 122°F)]
± 3°C/5.4°F [from 50 to 90°C (122 to 194°F)]
Measurement storage 15 tagged (numbered) readings
Power Four (4) CR2032 button batteries
Low battery indication ‘BAT’ appears on the LCD
Auto power off After 10 minutes of inactivity
Ordering Information
Model Description Buy Online Price
PH100 Extech PH100 ExStik pH Meter Kit Buy Now Sale $80.99
(Reg. $99.99)
Included Accessories
  • 1 - pH electrode
  • 1 - Protective sensor cap
  • 1 - Sample cup with cap
  • 4 - 3V CR-2032 button batteries
  • 1 - 48" (1.2m) neckstrap
Optional Accessories
PH103 Extech PH103 Tripak Buffer Pouches (4, 7 and 10pH plus rinse solution) Buy Now Sale $24.48
(Reg. $30.99)
PH105 Extech PH105 Replacement Flat Surface Electrode for ExStik pH Meter Buy Now Sale $32.84
(Reg. $44.99)
PH115 Extech PH115 ExStik Replacement Refillable pH Electrode Module For Extech PH100/PH110 Meter Buy Now Sale $40.14
(Reg. $54.99)
RE305 Extech RE305 ExStik ORP Electrode Buy Now Sale $40.14
(Reg. $59.99)
CL205 Extech CL205 ExStik Replacement Chlorine Electrode Module For Extech CL200 Meter Buy Now Sale $92.39
(Reg. $104.99)
EX006 Extech EX006 Weighted Base and Solution Cups Kit For Extech Water Quality Meters Buy Now Sale $10.87
(Reg. $15.99)
EX007 Extech EX007 Spare Sample Solution Cups (24pk) Buy Now Sale $10.94
(Reg. $14.99)
PH4-P Extech PH4-P Pint Size Bottles with Pre-made 4pH Buffer Solution (2 Bottles) Buy Now Sale $18.95
(Reg. $23.99)
PH7-P Extech PH7-P Pint Size Bottles with Pre-made 7pH Buffer Solution (2 Bottles) Buy Now Sale $18.95
(Reg. $23.99)
CA895 Extech CA895 Small Vinyl Pouch Carrying Case for 45118, and 4515 Buy Now $10.99

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