LAQUAtwin pH 33

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  • Waterproof IP67
  • Replaceable sensor
  • Auto Stable or Auto Hold measurement
  • Automatic temperature compensation
  • Auto buffer recognition
  • Auto power off (30 mins)
  • 2x CR2032 Li battery: 400 hours life
  • Packed in handy carrying case
  • Supplied with required calibration solutions
  • Material: ABS, Epoxy
  • Display: Custom monochrome LCD
  • Operating conditions: 5 to 40°C; 85% humidity
  • Warranty: 2 years on meter; 6 months on sensor



pH 33 

Measurement principle

Glass electrode method

sample volume

0.1mL or more *1

pH range

0 to 14pH

(Valid digits)



Up to five-point

Accuracy *2


Temperature Display

0 to 50°C


Custom (monochrome) digital LCD


5 to 40˚C, 85% or less in relative humidity  (no condensation)


CR2032 batteries (x2)

Battery life

Approx. 400 hours in continuous use

Outer dimensions

164mm × 29mm × 20mm  (excluding projections) / Approx. 50 g (meter only, without batteries)

Main functions

Temperature compensations, waterproof *3, auto stable/auto hold, automatic power OFF

*1 0.05 mL or more if the sampling sheet B (sold separately) is used.
*2 The closeness of agreement between measured value and actual value of the pH 4.01 standard solution after two point calibration using pH 4.01 and pH 7.00 standard solutions. The temperature during the calibration and measurement is the same. Two point calibration is started from pH 7.00. The error of standard solutions and rounding error (±1 digit) are not included.
*3 IP67: no failure when immersed in water at a depth of 1 meter for 30 minutes
Please note that the meter cannot be used underwater.



SKU 3999960124
Brand LAQUAtwin
Shipping Weight 0.5000kg

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