«PeakTech® P 5125» Conductivity Tester / Water Tester
With the P 5125 it is possible to measure the conductivity of liquids, for example of water. The purer the water, the lower the conductivity (for example, distilled water is purer than normal water and has a low conductivity of approx.

«PeakTech® P 5305» 2 in 1 PH-Meter
This 2 in 1 PH meter measures the PH value of aqueous liquids via the galvanic voltage difference between acidic, neutral and basic liquids. In addition, the liquid temperature is measured and shown with both measurements simultaneously on the LCD display with permanent backlighting. In addition to automatic temperature compensation (ATC), the device is waterproofed according to protection class IP-65 and is therefore particularly suitable for use in schools, training, science and research.

«PeakTech® P 5310» PH Meter / Water Quality Tester
This PH meter measures the pH value of aqueous liquids using a detachable sensor for fast and accurate evaluation of the measurement results with the galvanic potential difference between acidic, neutral and basic liquids in contact with the immersion probe tip. In addition, this device has a potentiometer for calibration on a PH7 value with an enclosed screwdriver and a neutralization solution for the sensor. The large LCD display is equipped with a permanent backlight illumination of the display and can be read easily even from a bigger distance. For long-term use, the device also has a built-in rechargeable battery and a charger for the mains power connection. Through its convenient design, large display, and the extensive accessories, this meter is ideal suitable for use in education, training, and science as same as in the research area.

«PeakTech® P 5315» PH-Meter 0,00 ... 14.00 with backlight
The PeakTech 5315 PH measuring device has a long and thin test probe which was specially developed for the laboratory area and it can also be used for smaller Erlmeyer flasks and test tubes without any problems. The PH probe can be easily removed through its screw connection. For a particularly good readability, the LCD display has a white background lighting, which is automatically activated when the device is switched on. On the top side there is not only the on and off switch, but also two potentiometers, which are required for calibrating the measuring ranges ph 7 and ph 4. The enclosed calibration solutions are required to calibrate the PeakTech 5315.