Reed R3500-NIST pH Meter

Original price was: $319.00.Current price is: $303.05.



Reed R3500-NIST pH Meter

Reed R3500-NIST Datasheet (PDF)

R3500-NIST High accuracy pH meter with replaceable electrode.

REED R3500 Offers

This digital pH pen displays both temperature and pH simultaneously on a dual LCD display. The R3500 features automatic temperature compensation for accurate readings and includes a built-in calibration procedure.



  • Dual LCD displays temperature and pH measurements
  • User selectable °F or °C
  • Automatic temperature compensation
  • Replaceable pH electrode module
  • Data hold function
  • Waterproof housing
  • Protective cap keeps sensor moistened
  • Low battery indicator and auto shut off


Ideal Applications for the REED R3500

  • Water conditioning
  • General purpose pH measurement
  • Aquariums
  • Wastewater monitoring
  • Beverage production


What’s included with the R3500-NIST

  • pH Meter
  • Protective Cap
  • Hard Carrying Case
  • Batteries
  • Calibration Certificate



Measuring Range 32 to 140°F (0 to 60°C)
Accuracy ±1.8°F (1°C)
Resolution 0.1°F (0.1°C)
Measuring Range 0.00 to 14.00 pH
Accuracy ±0.02 pH
Resolution 0.01 pH
General Specifications
Display Dual Display, LCD
Data Hold Yes
Auto Shut-Off Yes (after approximately 10 minutes)
Waterproof Yes
Low Battery Indicator Yes
Power Supply 4 x LR44 Cell Batteries
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature 14 to 122°F (-10 to 50°C)
Operating Humidity 10 to 80%
Dimensions 7.3 x 1.6 x 1.6″ (185 x 40 x 40mm)
Weight 3.1oz (88g)

Additional information

Weight 1 lbs
Dimensions 10 × 7 × 8 in

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