HOBO* Dissolved Oxygen Data Logger, Measure oxygen concentrations in lakes, streams, rivers, estuaries, and coastal waters, Oxygen Accuracy: +/-0.2 mg/L up to 8 mg/L, Temperature Accuracy: 0.2 Deg C, Depth Rating: 100 m
Go Direct* Drop Counter, precisely records the number of drops of titrant added during a titration and then automatically converts it to volume, Accurate drop counting at rates up to 6 drops/s, Dimensions: 15.5x4.5x1.8 cm, Opening for drops: 3 cm, Ring stand opening: 16 mm
Go Direct* Voltage Probe, combines a wide input voltage range and high precision, Specifications: Input voltage range: +/-15.0 V, Maximum voltage on any input: +/-15 V, Typical resolution: 0.5 mV, Power: Internal rechargeable battery, Wireless: Bluetooth, Wired: USB
HOBO* Water Temperature Pro v2 Data Logger, durable with 12-bit resolution, Complete with a precision sensor for +/-0.2Deg C accuracy, this logger measures temperatures between -40Deg C and 70Deg C (-40Deg F to 158Deg F) in air and up to 50Deg C in water