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Extech DO600-K: Waterproof ExStik® II Dissolved Oxygen Meter Kit

Kit with DO600, replacement membrane kit, and 16ft (5m) extension cable with probe guard

The DO600-K is a convenient kit which adds versatility for measuring dissolved oxygen in laboratories or out in the field with a 16-Foot (5m) extension cable and probe weight guard for taking easy measurements in tanks or streams. Complete with ExStik® II DO meter, DO electrode, protective sensor cap, DO603 replacement membrane Kit, 16-Foot (5m) extension cable, weighted probe guard, four 3V CR-2032 batteries, 48-Inch (1.2m) neck strap, and hard carrying case.



  • Kit includes DO600 meter, DO603 membrane kit, 16ft (5m) extension cable, weighted probe guard and carrying case
  • Oxygen level displayed as % Saturation or Concentration (mg/L [ppm])
  • Adjustable Altitude Compensation (0-20,000ft in 1,000ft increments)
  • Adjustable Salinity Compensation from 0 to 50ppt
  • Analog bargraph indicates trends
  • Memory stores up to 25 data sets with DO and Temperature reading
  • Self calibration on power up
  • Data Hold, Auto power off, Low battery indicator


Specifications Ranges Max. Resolution Basic Accuracy
DO (saturation mode) 0 to 200.0% 0.1% ±2% FS
DO (concentration mode) 0 to 20.00ppm (mg/L) 0.01ppm (mg/L) 0.4ppm (mg/L)
Temperature 32 to 122°F (0 to 50°C) 0.1°F/°C ±1.8°F (1°C)
Dimensions/Wt 1.4×6.9×1.6″ (36x176x41mm)
Weight 3.8oz (110g)


  • DO603 – Membrane Kit for ExStik® Dissolved Oxygen Meter
  • DO605 – ExStik® Replacement Dissolved Oxygen Module
  • EX010 – ExStik® 3ft Extension Cable with Probe Guard/Weight
  • EX050 – ExStik® 16ft Extension Cable with Probe Guard/Weight
  • CA895 – Small Vinyl Carrying Case with Belt Loop
  • EX006 – Weighted Base and Solution Cups Kit
  • EX007 – Spare Sample Solution Cups (24pk)


DO600K English Datasheet

DO600 English User’s Manual