Zobell ORP Calibration Solution

The reference standard for calibrating ORP (redox) sensors, mixed from powder when needed.

$70.00 ex GST

Product Information

Key Features

  • The recognised reference standard for checking and calibrating ORP (redox) sensors
  • Supplied as a concentrated powder — mix with 125 mL of distilled water to make the solution
  • Powder format stores far better than a pre-mixed ORP standard, which oxidises in the bottle
  • Supplied with a temperature correction chart, because the true Zobell value moves with temperature
  • Suits a wide range of ORP meters and inline redox controllers, including ozone-dosed RAS and public aquarium systems
  • Instruction sheet and Safety Data Sheet available for download on this page
  • Product code 61320 — one pack makes a single 125 mL batch
  • How much to order: one pack makes 125 mL, which is enough for a single calibration session on one or two probes, so order one pack per scheduled calibration rather than keeping mixed solution on the shelf.

Specifications

ItemDetailNotes
ParameterORP / redox potential (mV)Zobell solution is the standard reference used to verify and calibrate ORP sensors
Product code61320YSI reference 3682
Supplied asConcentrated powderMix with 125 mL of distilled water to make up the solution
Made-up volume125 mL per packEnough for one calibration session on one or two probes
Nominal mV valueContact usThe correct value depends on solution temperature and on the reference electrode in your meter — read it from the temperature correction chart supplied with the pack and the instruction sheet below
Reference temperatureContact usUse the supplied temperature correction chart to pick the value that matches the temperature of the made-up solution
SuitsA wide range of ORP meters and inline redox controllersIncluding handheld ORP pens and ozone or redox control systems on RAS and public aquarium plant
Water requiredDistilled water onlyTap or system water will shift the redox value and invalidate the calibration
Shelf lifeContact usUnmixed powder stores well; mix only what you need, use it the same day and discard the remainder

Frequently Asked Questions

Spare Parts & Consumables

No products were found matching your selection.

Related Products

Have a question or need a custom solution?

Our team is here to help you find the right equipment for your project.