Ohaus Starter 400M PH & Conductivity Portable Meter

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Starter 400M Multi-Parameter Meters are robust, lightweight, battery-operated units with
waterproof housing which makes them ideal for prolonged use in wet environments, and a rubber
protective case fit for field testing. A rechargeable lithium battery ensures hours of trouble-free testing
in the field. Intuitive software and an easy-to-view LCD allows for simple operation. A built-in USB port
enables easy data transfer.

• IP67 Waterproof Housing for Working in Wet Environments
Built with IP67 waterproof housing as well as a rubber cover and IP67 probes, the ST400/400M is
ideal for prolonged use in any field environment.

• Rechargeable Lithium Battery Ensures Less DowntimeRechargeable lithium battery provides 40 hours of uninterrupted use and more than 300 charge cycles—eliminating the need to change out batteries often.

• Easy to Operate with Intuitive Software and Information Displayed on the LCD
The ST400/400M features intuitive software which guides the user through operation. All
necessary information to run tests successfully such as electrode condition is displayed clearly
on the large LCD.

• Equipped with Large Storage Capacity and Ability to Transfer Data Easily Via USB
The ST400M has a large data storage capacity of 1000 records. If it exceeds capacity, data can be quickly transferred to a laptop via the micro-USB port, ensuring that users can retain every measurement.
STTEMP30 (Included); STDO11 (Included)

pH, Conductivity, TDS, Salinity and Resistivity Testing
Backlit Liquid Crystal Display (LCD)
Rechargeable lithium battery
Built-in micro-USB port
IP67 waterproof plastic housing, IP67 probes, rubber cover
Design Features
Data storage of up to 1000 items
Measurement Range:0-20 MΩ•cm;  -5 °C – 110 °C;  -2.00 – 16.00 pH;  00.0 μS/cm – 199.9 mS/cm;  0.1 mg/L – 199.9 g/L (TDS);  -1999 – 1999 mV;  0-99.9 psu
Measurement Resolution0.01 mg/L;  0.01 psu;  0.1 °C;  0.1 μs/cm;  0.01 pH;  0.01 Ω•cm;  1 mV
Accuracy± 0.5 % F.S.;  ±0.3 °C;  ±1 mV;  ±0.01 pH
Display  LCD Backlit Display
ElectrodeST320 IP67 3m (Included);  STCON3 IP67 3m (Included)
Accuracy ± (mV)1 mV
Accuracy ± (Temperature)0.3 °C
Battery Life 40 Hours with Rechargeable Battery
Conductivity accuracy (±)0.5 %
Conductivity measuring range 0.01 μS/cm-199.9 mS/cm
Measurement Range (Temperature)-5 °C ;  110 °C
Measurement Range-1,999 mV ;  1,999 mV
pH accuracy (±)0.01pH measuring range-2 ;  16pH resolution0.01
Resistivity measuring range0 MOhm ;  20 MOhm
Resistivity resolution0.01 M
OhmResolution Cond. (Variable)0.1 ;  199.9Resolution (Voltage)1 mV
Temperature compensation
Automatic Temperature resolution0.1 °C
Temperature Sensor30 KΩ NTC
Working Environment41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing)