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BORIN STELTH ® 3 Solid-State Portable Reference Electrodes for Water and/or Soil Applications

  • Palladium
  • Copper
  • Silver
  • Zinc

PALLADIUM: Until now, hydrocarbons proved deadly to all available reference electrode chemistries, including industry staples copper, silver, and zinc.
The applications for the new STELTH HCP are limitless.

Problem zones which have stunted use of traditional chemistries is another place the STELTH HCP will succeed – such as areas that have too many parts per million of chlorides for silver reference electrodes.

READ MORE: Introducing STELTH HCP™: New Palladium-based Reference Electrodes are Hydrocarbon-Proof (HCP™ )

COPPER: For chloride free environments.

SILVER: For environments with chloride.

ZINC: For chloride free environments. 

If you’ve ever wanted to depend on the stability of a STELTH reference electrode for your CIS or DCVG studies, the STELTH 3 portable is for you. Our STELTH 3 portable has the same ceramic rounded tip as our time-tested STELTH 1 – but with a wing nut instead of a wire at the end – making it ideal for use above ground or with Miller Electrode Extensions.

The innovative ceramic tip also features our proprietary Moisture-Retention Membrane (MRM™), which lets moisture in, traps it within the ceramic, and keeps the cell’s internal electrolytes from leeching out.

Just a few reasons BORIN STELTH solid-state reference electrodes are unique:

  • Never need recharging or recalibrating
  • Impregnated with membrane that keeps electrolytes from drying out or getting contaminated
  • Trap hydrogen sulfide or excess chloride ions before they cause damage
  • Let you know when you have dangerous levels of AC to deal with
  • Can thrive in ALL environments, even those chemically detrimental to other reference electrodes
  • Remain accurate for their lifetime
  • Won’t die every winter

BORIN stands behind every STELTH reference electrode you buy:

  • We test EVERY SINGLE reference electrode we make
  • You can track/trace any STELTH
  • Every STELTH is calibrated for the life of the cell
  • Our STELTH reference electrodes will work for years and remain stable after you retire

Portable for Water and/or Soil Applications


1.215″ (31 mm) width x 8.25″ (209.5 mm) length high-impact Lexan® tube

Standard Lead wire



Lexan® electrode case housing; ceramic tip with Moisture Retention Membrane (MRM™)

Service Life

Minimum 10-year service life

Shelf Life

Infinite shelf life, infinite stability

Color code

Pd-PdCl2 (orange), Cu-CuSO4 (yellow), Ag-AgCl (blue), Zn-ZnSO4 (red)

Certified Potential Range
pH Range

4–9 pH

Working Temperature Range

32° F to +176° F (0° C to 80° C)

Material Temperature Range

-60° F to +185° F (-51° C to 85° C)

catalogsheet stelth 3 2016 11 10

STELTH® 3 – Hydrocarbon-Proof (Pd-PdCl2)

Model SRE-042-HCP

Solid-state portable water and/or soil applications in any chloride environment.

STELTH® 3 – Copper-Copper Sulfate (Cu-CuSO4)

Model SRE-010-CPY

Solid-state portable for water and/or soil in low chloride environments (can tolerate chloride plus bromide levels up to 1,000 ppm).

STELTH® 3 – Silver-Silver Chloride (Ag-AgCl)

Model SRE-011-SPB

Solid-state portable for water and/or soil in seawater/chloride environments (with chloride plus bromide levels in excess of 1,000 ppm but less than 19,000 ppm).

STELTH® 3 – Zinc-Zinc Sulfate (Zn-ZnSO4)

Model SRE-012-ZPR

Solid-state portable for water and/or soil in low chloride environments (can tolerate chloride plus bromide levels up to 1,000 ppm).

BORIN® STELTH® 3 Solid-State Portable Reference Electrode for Water and/or Soil Applications
Dimensions of product:  1.215″ (31 mm) width x 8.25″ (209.5 mm) length high-impact resistant Lexan® tube BORIN Manufacturing
Standard Lead Wire: n/a Address: 5741 Buckingham Pkwy. Unit B, Culver City, CA 90230
Weight of STELTH 3
(no wire):
0.55 lbs. Phone: (310)-822-1000
Weight of product
in box :
0.90 lbs. Email:
Weight of product
in case:
STELTH 3 + box x 12 + 2 lb. case =
12.8 lbs. per case
Standard shipping time: 24 hours (or less) from order placement
Dimensions of case of 12: 17.5″ x 14.5″ x 13.5″ Boxes per case: 12 boxes per case
    Minimum order: 1 case of 12