DO Pen


SKU: EWQS850045 Category:

DO Pen

This DO Pen measures dissolved oxygen to determine water quality in aquaponics, aquariums and fish hatcheries. It is designed for simple, one-hand operation.


  • Automatic temperature compensation and calibration to air
  • Polarographic probe has a built in temperature sensor
  • Easy to replace pop-off probe heads
  • Simultaneously displays dissolved oxygen and temperature readings
  • Holds readings and recalls minimum and maximum readings
  • IP-67 waterproof
  • Comes ready to use with a soft carrying case, belt loop, two spare probe head, electrolyte and 4 AAA batteries


  • Dimensions: 8″ x 2″ x 1½” (180 x 40 x 40 mm)
  • Weight: 6 oz (175 g)
  • Model 850045

Consumers may also be interested in the DO Meter Kit.

Weight2 lbs
Dimensions8 × 2 × 2 in

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