Single and Combination pH Electrodes in SS Tubes

Single and Combination pH Electrodes in SS Tubes

These are miniature combination pH/reference electrodes in ss tubes and a microminiature pH electrode mounted in the lumen of a fine hypodermic needle.

  • Combination electrodes are mounted in an stainless steel tube
  • Combination electrodes do not require an external reference electrode

Item# Description U.S. List Price Quantity
69-0497 Combination pH Electrode in 11 ga SS Tube
69-0492 Combination pH Electrode in 18 ga SS Tube, Model IC-201
69-0493 Combination pH Electrode in 20 ga Needle
69-0491 Single pH Electrode in 25 ga Needle
69-0490 Flexible Reference Electrode
64-1625 (pHamp) pHamp pH preamplifier, battery powered
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pHamp pH Preamplifier

The pHamp is a compact unity gain preamplifier designed to convert the high impedance signal of a pH electrode into a low impedance signal capable of travelling up to 1,000 feet over a coaxial cable.

This rugged preamplifier is encapsulated within an epoxy filled stainless steel enclosure and uses BNC-style input and output connections. Powered from a lithium battery, the expected life is a minimum of 5 years.



Response Time ~10 sec
Slope 55 mV per pH
pH Range 1 to 14
Impedance 200 MO
Stability 0.05 pH per day
Storage Wet
Reference Storage Replaceable
Dimensions (L x D)
11 gauge 31.7 cm x 3 mm (1.25 x 0.1 in)
18 gauge 76 x 1.25 mm (3 x 0.005 in)
20 gauge 25.4 x 0.9 mm (1 x 0.035 in)


Response Time ~15 sec
Slope 55 mV per pH, range of 1 to 14
Impedance 1500 MO
Stability 0.05 pH per day