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Fisherbrand™ Traceable™ Dissolved Oxygen Meter Pen

O-ring seal and membrane keypad for long life in severe lab or harsh plant environments.

Catalog No. S98197

This item has been discontinued by the manufacturer and is no longer available. Please call customer service for assistance: 1-800-766-7000.

Includes: Traceable™ Certificate, two spare probe heads with membranes, electrolyte solution, nylon carry case, and four AAA batteries.



  • Tough ABS plastic housing and water-resistant design
  • Hold button freezes the reading on the display
  • High contrast, easy to read 0.37 in. high LCD digits
  • Simultaneous display of oxygen concentration and temperature
  • Unit recalls minimum/maximum readings at the press of a button
  • Automatic temperature compensation: 0° to 50°C (32° to 122°F)
  • Replacement battery Cat. No. 2-440-3A

Dissolved oxygen measurement

  • Range: 0.0 to 20.0mg/L
  • Resolution: 0.1mg/L
  • Accuracy: ±0.4mg/L
Dissolved oxygen measurement % air saturation
  • Range: 0.0 to 100% air saturation
  • Resolution: 0.1%
  • Accuracy: ±0.7%mg/L
Temperature measurement
  • Range: 0° to 50°C (32° to 122°F)
  • Resolution: 0.1°
  • Accuracy: ±0.8°C (1.5°F)

Order Info

ABS Plastic Case: 1.5 × 8 × 1.5 in. (3.8 × 20.3 × 3.8cm); Weight: 5 oz. (142g)


Individually serial-numbered Traceable™ Certificate is provided from an ISO 17025 calibration laboratory accredited by A2LA™. It indicates traceability to standards provided by NIST™.



Traceable certificate, two spare probe heads with membranes, electrolyte solution, Nylon carry case, Four AAA batteries
0°C to 50°C
5 oz.
0 to 100% Air Saturation
32°F to 122°F
DO, Temperature
0.14 kg
0 to 20mg/L
0 to 20mg/L


Product Certifications


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