Orion* 4-Star pH/RDO* Portable Multiparameter Meter

• RDO (Rugged Dissolved Oxygen) Technology
• No membranes to change, once-a-year cap replacement
• Calibrate using water-saturated air, air-saturated water, zero point or a custom point with Winkler Titration
• Not affected by color, turbidity, or sulfides
• No dehydration concerns even if probe is not stored in the included calibration sleeve
• Superior abrasion and chemical resistance
• Stored data in the RDO optical/luminescence-based cap—no codes to enter or match up

Easy to operate in any mode

• Bright, backlit LCD display with ready indication
• Balanced comfortable handling
• Simultaneous display of pH and DO, plus temperature
• Convenient built-in Quick-Start Guide with calibration instructions
• Automatic or manual temperature compensation
• Auto-read/hold function
• RS-232 port for easy data downloading and meter software updates
• IP67 waterproof meter
• IP68 waterproof probe

Extra features in every mode

• DO: automatic barometric pressure and salinity compensation; calibration to Winkler Titration for BOD measurements; uses RDO/luminescence-based probe
• pH: automatic or manual calibration; 1 to 5 calibration points; Auto-buffer-recognition of NIST*/US and DIN buffers; calibration alarm
• Temperature: calibration capability
• RDO optical/luminescence-based probe: includes calibration sleeve and stainless-steel probe guard

• Full complement of GLP-related features
• 750 point datalogger, downloadable to printer or computer via RS-232 connection

Meter Kit 1213311 package includes: meter; RDO sensor with 3m cable, stainless-steel RDO sensor guard, optical cap, calibration sleeve; pH/ATC Triode 9107WMMD with 3m cable; batteries and instructions.

Meter Kit 1213312 package includes: meter; RDO sensor with 6m cable, stainless-steel RDO sensor guard, optical cap, calibration sleeve; pH/ATC Triode 9107WLMD with 6m cable; batteries and instructions.

RDO optical sensors with cable, stainless steel guard, calibration sleeve and optical cap:

With 3m cable 087010MD

With 6m cable 087020MD

With 10m cable 087030MD

With 15m cable 087050MD

With 30m cable 087100MD

Replacement optical cap 087001

Replacement stainless steel RDO optical sensor guard 087002

Calibration sleeve for RDO optical sensor 087003

pH/ATC Triode, epoxy body, low-maintenance gel:

With 3m cable 9107WMMD

With 6m cable 9107WLMD