Ohaus Pen meter Multi, pH/Cond. (0…1999µS/cm)/TDS/Temperature, ATC 30393199

The Ohaus Pen meter Multi Model ST20M-B (Part Number 30393199) is a portable, waterproof electrochemistry meter designed to measure pH, conductivity, total dissolved solids (TDS), and temperature for water quality and related analyses.

Key Features:

• Meter Types: pH, Conductivity, TDS, Temperature
• Measurement Ranges: 0.00 - 14 pH; 0 - 1999 µS/cm conductivity; 0.0 - 1000 mg/L TDS; 0.0 - 99.0 °C temperature
• Accuracy: ±0.05 pH; ±2.0% full scale for conductivity; ±0.5 °C for temperature
• Measurement Resolution: 0.01 pH; 1 µS/cm conductivity
• Calibration: 3-point
• Automatic Shutoff: activates after 6 minutes of inactivity
• Power: 4 AG13 (1.5V) batteries included, providing approximately 100 hours of use
• Display: Liquid Crystal Display (LCD) with secondary information line on select models
• Construction: ABS housing with IP67 waterproof rating, including protective sensor cap
• Dimensions: 7.28 in x 1.5 in x 1.77 in (185 mm x 38 mm x 45 mm)
• Net Weight: 3.88 oz (110 g)
• Temperature Sensor: 50 KΩ NTC thermistor
• Operating Environment: 10°C to 40°C (50°F to 104°F), 85% relative humidity, non-condensing
• Number of Buttons: 3
• Includes wrist strap to prevent accidental drops

Advantages:

• Multi-parameter measurement allows comprehensive water analysis in a single portable device
• High accuracy pH and conductivity readings enable precise monitoring of solution chemistry
• 3-point calibration ensures reliable and consistent measurements
• Automatic shutoff extends battery life to approximately 100 hours of operation
• Rugged IP67 waterproof ABS housing makes it suitable for field or laboratory use in wet environments
• Compact and lightweight design enhances portability and ease of handling
• Wrist strap reduces risk of accidental damage from drops