Calibration Buffers, Standards & Cleaners

Geotech offers a full line of pH buffers, conductivity and ORP standards, probe cleansers and storage solutions to help you get the best data from your water meter probes and sensors.

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Calibration Buffers, Standards, Cleansers, and Storage Solutions


Geotech pH Buffers & Conductivity Standards
500 mL Geotech pH Buffers
& Conductivity Standards

pH Buffers & Conductivity Standards

  • Pre-mixed and ready to use
  • Guaranteed contaminant free
  • NIST traceable
  • Up to 5 gallon (18.9 L) sizes available
  • ±1% accuracy
  • Temperature compensation scale
  • PPM values with conversion factors
  • Color coded for easy identification

Call 1.800.833.7958

Calibration and Maintenance Singles
Calibration and Maintenance Singles

Calibration & Maintenance Singles

  • 20 individually sealed packets per box
  • Easy to use and always fresh
  • Works with most auto-calibration units available today
  • Individual packets help control costs

Call 1.800.833.7958


ORP Standards
ORP Standards

ORP Standards

  • ORP/Redox probe verification
  • Powder version, just add distilled water
  • Liquid version is ready to use

Call 1.800.833.7958



The EPA recommends Luminox so solvent rinse can be eliminated.

  • Alconox Powdered Precision Cleaner is effective on laboratory glassware, plastic, rubber, metal and other hard surfaces.
    Available in 4 lb. (1.8 kg) boxes or by the case.
  • Luminox Low-Foaming Neutral Cleaner is a aqueous, low-ionic content, non-phosphate blend of organic solvents, surfactants, and rinse aids.
    Available in 1 gallon (3.8 L) containers.
  • Liquinox Critical Cleaning Liquid Detergent for ultrasonic and manual cleaning.
    Available by the quart or by the case.

Call 1.800.833.7958


Probe Maintenance Supplies
Probe Maintenance Supplies

Probe Maintenance Supplies

  • Probe storage and refill solutions
  • Probe cleaning & maintenance solutions
  • D. O. membranes and cap membranes
  • O-Rings and service kits

Call 1.800.833.7958