Rapid pH

The Rapid_pH is a robotic Laboratory pH meter for testing pH in microplates, tubes and vials so it reduces the time and tedium associated with manual pH measurement in the lab. Manual use of Laboratory pH meters typically requires endless rinsing, drying, immersing, waiting for stabilization and recording of the result.  The Rapid_pH makes your life so much easier by completely automating all of these steps. Do you need to focus on other tasks in the lab that are more important to you? Are you interested in this solution? Then feel free to contact us without obligation.


Benchtop pH Meter for pH Testing of Large Sample Sets While Reducing Volumes

This automated pH meter will increase your pH testing throughput while working on other tasks. This small benchtop pH meter automatically rinses the pH probe in DI water, blow dries the probe then reads the pH sample and repeats the cycle. Fresh DI water is cycled into the wash well in between pH reads. When finished, the Rapid_pH moves the pH probe to a storage tube containing KCL. pH sample volumes can be as small as 75 ul in half area 96 well microplates. measure pH samples with volumes of 200 ul in a standard 96 well microplate. Larger pH sample volumes are not a problem in deep well microplates, vials or tubes. The Rapid-pH with a heating nest heats samples up to 50c and provides temperature compensation. CFR 21 Part 11 Compliance software are available.


The Rapid_pH pH meter enables pH measurement of large sets of samples as never before possible:

  • Provides walk away time from pH testing to perform more important tasks
  • Increase throughput of testing
  • Accurate within +-0.05 pH
  • Automation assures consistency of results
  • pH measurement range from 0.0 to 14.0
  • Easy calibration
  • Can be used as part of a larger automated system
  • pH Meter with temperature compensation
  • pH Meter for Viscous pH samples
  • Optional CFR 21 Part 11 Compliance Software
  • Optional pH probe sterilization


The Rapid_pH software is intuitive so it is easy to calibrate the pH meter and then run your pH samples with minimal training.  The Rapid_pH software allows you to import data about your sample sets and export the pH results. The pH meter calibration screen is shown below.  Simply select the type of plate you are using, enter the standards (any number of repetitions is supported), and press the play button.


pH samples are run from a similar screen so in this case, the user picks the microplate format, then either manually selects the wells to be read or imports the data from a saved file that the user creates.  A pH sample set can be run in row or column order. The Rapid_pH used Mettler Toledo InLab Micro Probes. It is not compatible with HANNA pH probes or Thermo Fisher pH probes. 


Do you want more information about Hudson’s Rapid_pH? Then feel free to contact us without obligation.