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Dissolved Oxygen Pen Style Tester

$592.00 exc GST

Available on back-order


The PST-DO30 is an accurate and stable, economical and convenient, easy to maintain, dissolved oxygen pen style tester that is very easy to use and creates a new experience for accurate dissolved oxygen measurement.. The price includes the the Pen and the replaceable probe filled with polargraphic solution. Replacement probes and polagraphic solution can be purchased in the spares section.

  • Waterproof and dustproof housing, IP67 waterproof grade.
  • Precise & easy operation, all functions operated in one hand.
  • Unit display can be selected:ppm or %.
  • Automatic temperature compensates after salinity /barometric manual input.
  • User replaceable electrode & membrane cap (CS49303H1L).
  • Field throw-out measurement(automatic locking function)
  • Easy maintenance, no tools needed to change batteries or electrode.
  • Backlit multiple line display, easy to read.
  • Self-Diagnostic for easy troubleshooting (e.g battery indicator, message codes).
  • 1*1.5 AAA long battery life.
  • Auto-Power Off saves battery after 5mins non-use.






DO30 Dissolved Oxygen Tester Specifications
Measuring Range 0.00 – 20.00 ppm;0.0 – 200.0%
Resolution 0.01 ppm;0.1%
Accuracy ±2% F.S
Temperature Range 0 – 100.0℃ / 32 – 212℉
Working Temperature 0 – 60.0℃ / 32 – 140℉
Auto Temperature Compensation 0 – 60.0℃ / 32 – 140℉
Calibration 1 or 2points auto calibrate(0% zero oxygen or 100% in air)
Salinity Compensation 0.0 – 40.0 ppt
Barometric Compensation 600 – 1100 mbar
Screen 20 * 30 mm multiple line LCD
Lock Function Auto/Manual
Protection Grade IP67
Auto backlight off 30 seconds
Auto power off 5 minutes
Power Supply 1×1.5V AAA7 battery
Dimensions (H×W×D) 185×40×48 mm
Weight 95g

Dissolved oxygen is very important for the survival off most aquatic species in rivers, streams and lakes. If the dissolved oxygen level drops too low, fish can suffocate, sometimes resulting in the death of thousands.

For more information read this article