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Add Simple Analog ORP Monitoring to Your Build

The Atlas Scientific Surveyor Analog ORP Kit is a low-cost analog ORP sensing kit made for fast setup and straightforward integration. It includes the Surveyor™ Analog ORP Sensor / Meter, a consumer grade ORP probe, and a calibration pouch to help you get started.

Atlas positions this kit as a practical option when you want basic analog ORP output for engineering work without stepping into a more complex digital setup.

Important: This product was previously known as the Gravity Analog ORP Kit. It is designed for analog ORP measurement and includes the key parts needed for initial setup.

Why you'll love it

  • Analog ORP output: Simple choice for controllers that use analog inputs
  • Ready-to-start kit: Includes the sensor board, probe, and calibration pouch
  • Low-cost Atlas option: Good for entry-level ORP integration and testing
  • Compact size: Small board works well in compact prototypes
  • Good for quick builds: Easier than sourcing meter, probe, and calibration parts separately

What you can build

Use it for water treatment experiments, aquarium projects, oxidation-reduction monitoring, education builds, and custom analog controller systems.

Starter bundles

Pair it with an Arduino-compatible controller, a simple analog logger, display module, or panel meter. Probe holders and enclosure parts also help for cleaner setups.

Recommended add-ons

Helpful add-ons include spare ORP calibration solution, replacement ORP probes, isolators, and mounting hardware for tanks, pipes, and bench rigs.

Technical specifications

Product Atlas Scientific Surveyor Analog ORP Kit
Main Electronics Surveyor Analog ORP Sensor / Meter
Output Type Analog
Probe Included Consumer Grade ORP Probe
Calibration Included 1 x 20ml ORP calibration solution pouch
Calibration Value 225mV
Board Size 56.2mm x 32mm (2.2in x 1.2in)
Approx. Weight 15g

Pinout & usage notes

Connect the Surveyor board to your analog input hardware, then use the included ORP calibration pouch during setup before you begin collecting readings.

This kit is best when you want a simple analog ORP path and do not need the digital interface and feature set of Atlas EZO products.

What’s in the box

1 × Surveyor™ Analog ORP Sensor / Meter

1 × Consumer Grade ORP Probe

1 × 20ml ORP calibration solution pouch (225mV)

Frequently Asked Questions

Is this the old Gravity ORP kit? Yes. Atlas notes this product was previously known as the Gravity Analog ORP Kit.
Does it include a probe? Yes. A consumer grade ORP probe is included.
Does it include calibration solution? Yes. One 225mV ORP calibration pouch is included.
Is this analog or digital? This is an analog ORP kit built around the Surveyor analog sensor / meter.

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