Thermo Orion® Star A221 pH Portable Meters

  • Large, backlit graphic LCD display shows pH/mV/RmV and temperature along with electrode status, time, date and calibration points.
  • AUTO-READ™ locks in the stable reading and ready indicator alerts when readings are stable.
  • Up to 5-point pH calibration with automatic recognition for USA/NIST and DIN buffers.
  • Non-volatile memory holds up to 1000 data points with time and date stamp.
  • Waterproof. IP67-rated housing.
  • Multilingual interface supports English, Spanish, French, Italian, German, and Chinese.
  • Log function: manual, automatic with AUTO-READ™. Log edit: Delete last reading or all.
  • Inputs: (pH electrode) BNC, reference pin; (ATC probe) 8-pin mini-DIN.
  • Output: RS232 or USB.
  • Power: 4 x AA batteries (included) provide over 800 hours of use, or 100-240V with the AC adapter (sold separately). CE marked.
  • Warranty: 3 year meter replacement.

  • pH range: -2.000 to 20.000 ±0.002.
  • mV/RmV range: ±2000.0mV ±0.2mV or ±0.05% of reading, whichever is greater. EH ORP mode.
  • Temperature range: -5.0 to 105.0ºC (23 to 221ºF) ±0.1º. Offset calibration: 1 point.

Manufacturer : Thermo Orion Inc

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Cat.#DescriptionIncludesMfg.#PriceQuantityEstimated Availability
639-416-02Star A221 pH Portable MeterFour AA batteriesSTARA2210$1,220.44 EA  
Ships within one week
639-416-04Star A221 pH Portable Meter KitROSS Triode 3-in-1 pH/ATC probe, 10 pouches each of pH buffer 4.01, 7.00 and 10.01, ROSS electrode storage solution (475ml), rinse solution (10 pouches), protective armor with electrode holder, hard carrying case and four AA batteriesSTARA2215$2,393.53 EA  
Ships within one week

Parts & Accessories:

Cat.#DescriptionMfg.#PriceQuantityEstimated Availability
639-890-30Hard carrying case for A-series portable metersSTARA-CS$298.10 EA  
Ships from stock
639-890-32Armor for Orion Star A-series portable meters, includes electrode holders for pH, conductivity and DO probesSTARA-AR$215.68 EA  
Ships within one week
639-890-33pH electrode holder for Star A-series armorSTARA-ESPH$60.15 EA  
Ships within one week
639-890-34Conductivity and DO prove holder for Star A-series metersSTARA-ESCD$60.15 EA  
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639-890-35AC adapter, 120V1010003$140.10 EA  
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639-890-36Orion ROSS Ultra Low Maintenance pH/ATC Triode Combination Electrodes with a BNC and 8-pin MiniDIN Connector and 3 meter cable8107UWMMD$1,106.46 EA  
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639-890-37pH 4.01 buffer pouches910410$73.82 PK / 10  
Ships within one week
639-890-38pH 7.00 buffer pouches910710$73.82 PK / 10  
Ships within one week
639-890-39pH 10.01 buffer pouches911010$73.82 PK / 10  
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639-890-40pH rinse solution pouches911110$73.30 PK / 10  
Ships within one week

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