2-In-1 Digital Ph & Orp Controller + Electrodes Industrial Type

Out of stock
Out of stock
  • 1 x pH & ORP Controller
  • 1 set of FREE pH 4.003 and pH 6.864 CalibrationSolutions
  • 1 x Replaceable pH electrode
  • 1 x Replaceable ORP electrode
  • 2 x Rubber cable holder with suction cap
  • 1 x mini screw driver
  • 1x Metal Holder for mounting
  • 1 x English Instruction Manual
  • 1 x Power Cord/Plug
  • Standard Factory Packinging
Unit Price
US$ 140.96
Out of stock

This PH-303 Digital ORP and pH Controller is an upgraded version of our PH-203 Controller. It is the industrial & heavy duty version with a new re-engineered body structure. PH-303 allows you to monitor pH and ORP as well as controlling pH or ORP levels using just one unit. The large and informative display of the PH-303 is capable of displaying the status of the current conditions in the aquarium and setting values.

An ozone generation unit or ozonizers and CO2 system are control devices that regulate the amount of ozone and release carbon dioxide of the water respectively, which largely affects the pH level and filtration of the system.

This controller can be used in aquacultures, beverage, fish hatcheries, water ponds, whirlpool, spa, food processing, photography, laboratory, paper industry, swimming pool, plating industry, quality control, water conditioning, and schools.


  • Display pH value and Redox level (ORP) with clear LCD screen
  • Equipped with 2 replaceable BNC probes (pH and ORP), 1 control output power socket
  • Regulates and monitor pH & ORP level in liquids simultaneously
  • Provided with power socket for CO2 and Ozone Solenoids or Dosing Pumps
  • Quickand easy to install and use
  • Conformity with CE and RoHS standards
  • With Protection Dead Band feature that automatically turns off or shuts down the unit to protect your unit from erroneous readings
Shipping from
This product is shipped from our supplier's warehouse in Hillsboro, OR, United States
Our guarantee
This product is brand new and includes the manufacturer's warranty, so you can buy with confidence.
A 25% handling charge is levied against all authorized returns except those due to our error. Unauthorized returns are subject to a 40% handling charge. Damages & defects must be reported to us within 14 days.
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