Ohaus Pen Meter Starter Dissolved Oxygen ST20D, 1 Item OHAU30073986

The Ohaus Pen Meter Starter Dissolved Oxygen ST20D is a portable electrochemistry meter designed for accurate measurement of dissolved oxygen concentration in liquids.

Key Features:

• Measurement range: 0.0 to 19.9 mg/L dissolved oxygen
• Accuracy: ±0.5 mg/L
• Resolution: 0.1 mg/L
• Display: LCD with temperature display
• Automatic temperature compensation range: 5 to 45 °C (41 to 113 °F)
• Operating temperature range: 5 to 40 °C (41 to 104 °F), 80% relative humidity, non-condensing
• Auto shutdown: after 10 to 15 minutes of inactivity
• Power: 4 × 1.5V AG13 batteries included
• Battery life: approximately 100 hours
• Dimensions: 185 mm × 42 mm × 37–45 mm
• Weight: approximately 90–110 g
• Construction: ABS plastic housing with IP67 waterproof rating
• Includes wrist strap to prevent accidental drops
• Electrode and membrane are replaceable
• Calibration: recommended one-point (100%) calibration; zero-point calibration optional with supplied zero-oxygen chemical

Advantages:

• Wide dissolved oxygen measurement range covers typical environmental and laboratory samples
• High accuracy and resolution enable precise oxygen level detection
• Automatic temperature compensation improves measurement reliability under varying temperatures
• IP67 waterproof rating and durable ABS housing allow use in rugged and wet environments
• Long battery life with auto-shutdown extends field usability without frequent battery changes
• Replaceable electrode and membrane extend device lifespan and reduce maintenance costs
• Compact and lightweight design enhances portability and ease of use in the field