Orion Star® A111 Series Benchtop pH Meter (Thermo Scientific)

pH Benchtop Meter Kit includes:

  • Orion Triode Refillable Electrode
  • pH 4.01 Buffer (475 mL)
  • pH 7.00 Buffer (475 mL)
  • pH 10.01 Buffer (475 mL)
  • pH electrode storage solution


  • Up to 3 point pH calibration with automatic recognition for USA/NIST and DIN buffers
  • AUTO-READ® locks in the stable reading on your screen, ready indicator alerts when readings are stable and timed reading gathers data in specific time intervals
  • Large, informative screen clearly shows the main information, including pH or mV reading, temperature, meter mode, calibration information, and power source
  • Easily recall calibration slope data for procedure checks
  • Non-volatile memory holds up to 50 data points with time and date stamp
  • Included electrode arm and newly-designed probe holder make it easier to maintain and place probes into samples
  • Included universal AC power adapter, or use four AA batteries (sold separately)
  • IP54-rated housing handles splashes and is wall-mountable if table space is a problem
  • Electrodes recommended for dairy testing include 3802-12, 3802-60 and ATC probe 3802-98


pH Range -2.000 to 16.000
pH Resolution 0.1, 0.01
pH Relative Accuracy ±0.01
mV Range ±1600.0
mV Resolution 0.1
mV Relative Accuracy ±0.2 mV or ±0.05% of reading whichever is greater
Temperature Range -5 to 105
Temperature Resolution 0.1
Temperature Relative Accuracy ±0.1
Ambient Operating Temperature 5 to 45°C (-15 to 113°F)
Inputs BNC, 8-pin mini-DIN
Power Requirements AC adaptor (included) 4 AA (sold separately ) 2000 hours life;
replacement AC adapter # 1068-22
Certifications CE, TUV 3-1, FCC Class A
Warranty 3 year meter replacement
Description/Item No. Details Mfr. Item No. Your Cost/Qty Purchase
Star® A111 Series Benchtop pH Meter
pH Benchtop Meter only StarA1110
Buy 1 $560.17/EA
Buy 2 $514.04/EA
Sign in to Buy 2 In Stock 2 In Stock
Star® A111 Series Benchtop pH Meter Kit
Includes: Triode Refillable Electrode, pH 4.01, 7.00, and 10.01 Buffer, electrode storage solution, Electrode cleaning solution Star A1115
Buy 1 $828.67/EA
Buy 2 $760.45/EA
Sign in to Buy This item is on back-order. Allow 5-10 business days. Please call us at 800-328-8378 with any questions about availability. In Stock