• New
    Pocket Colorimeter

Pocket Colorimeter

Chlorine, Free + Total, MR, with Box

  • Reliability
  • Simple
  • Connected

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The DR300 maintains the Pocket Colorimeter legacy of reliability while providing state-of-the-art data transfer capability and connection to Claros*.

Reduce data collection hassles, eliminate transcription errors, and ensure stronger compliance traceability. Please note that reagents are not included in the kit and need to be purchased separately. For a limited time the DR300 comes with a FREE 90-day trial of Claros Collect software, allowing measurement data to immediately be available online to your entire team. Learn more at hach.com/claros/InstrumentConnect.

*Claros connectivity currently available only in US, Canada and EU.


Optional Bluetooth connectivity allows you to safely transfer measurement data to Claros – Hach®’s Water Intelligence System – reducing errors and saving time by eliminating manual data entry.


Rugged, waterproof (IP67) design withstands whatever conditions you encounter in the field (drops, extreme temperatures, rain and dirt) and still delivers years of dependable, accurate measurements.


Simple, intuitive operation reduces potential manual error, ensuring accurate measurement data you can trust, time after time. Larger display with improved backlight makes reading measurements in all conditions even easier.

what's in the box ?

Each DR300 Pocket Colorimeter comes as a ready-to-use kit in a sturdy custom carrying case (4660200),including batteries, sample cells (2427606),manual, and Hach Communication Dongle (LPV446.99.00012). Reagents have to be purchased separately.

0 - 2.5 Abs
Data Logger
Last 50 measurements
Silicon photodiode
Dimensions (H x W x D)
34 mm x 69 mm x 157 mm
LCD with backlight
Enclosure Rating
IP67, waterproof at 1 m for 30 minutes
Measurement method
Operating Conditions
0 - 50 °C; 0 - 90% relative humidity (non-condensing)
Chlorine, free + total
Power supply
Four AAA alkaline batteries; approximate life is 5000 tests

0.05 - 4.00 mg/L Cl2

0.1 - 10.0 mg/L Cl2

Sample cell compatibility:
1 cm (10 mL),25 mm (10 mL)
Spectral Bandwidth
15 nm filter bandwidth
528 ±2 nm
0.25 kg