NEW! The luminescent dissolved oxygen method utilizing the technology Hach pioneered in 2003 is now fully EPA approved. Hach's LDO process and lab probes, as well as BOD tests conducted with Hach's HQd meter platform can now be used for reporting purposes when following this newly approved method.
Product - Dissolved Oxygen HQd Meters and IntelliCAL™ Probes
Method 10360 for Dissolved Oxygen Approved by EPA for Reporting
Build Your Own HQd System
Hach now has the option of creating your own HQd system to suit your specific testing needs. Choose from options including benchtop or portable, power supply, testing parameter and more!
Build your own HQd System
LDO® Meters & Probes
- No membranes!
- Infrequent calibrations
- No electrolyte to replace or anode to polish
- 1-year sensor life
- EPA recommended method
See below for individual meters and probes or see our kits that include everything you need to start testing!
HQd Meters for Dissolved Oxygen
- HQ440d Benchtop
- - Dual Input
- - Multi-Parameter - pH, Conductivity, Dissolved Oxygen, ORP, and ISE
- HQ430d Benchtop
- - Single Input
IntelliCAL LDO Probes
Rugged LDO Probes
Designed for harsh environments. Features a super-tough, stainless steel body and polymer shroud that protects the sensor from impact. Reinforced, steel-sheathed cables are durable, yet manageable. Waterproof for 24 hours at a depth of 30 meters.
Standard LDO Probes
lso measures temperature. Waterproof for up to 24 hours at a depth of three meters.
HQd Starter Kits for Dissolved Oxygen -Everything you need to start testing!
HQd Bundles for Dissolved Oxygen - Meter and probe bundles
HQd Rugged Field Kits for Dissolved Oxygen
- HQ40d Advanced Portable Meter Package with LDO101 Rugged Optical Dissolved Oxygen, PHC101 Rugged pH, and CDC401 Rugged Conductivity/TDS/Salinity Probes
- HQ40d Portable Meter Package with LDO101 Rugged Optical Dissolved Oxygen and PHC101 Rugged pH Probes
- HQ40d Portable Meter Package with LDO101 Rugged Optical Dissolved Oxygen Probe
- HQ30d Portable Meter Package with LDO101 Rugged Optical Dissolved Oxygen Probe