Unsat. Lab

METER’s WP4C Dewpoint Potentiometer is considered as a fast, accurate, and reliable instrument available for measuring water potential. 

It comprises a sealed block chamber with a sample cup, a mirror, a temperature sensor, an infrared thermometer, a chilled-mirror dew point sensor, and a fan.

The range of the device is 0 to -300 MPa with an accuracy of ±0.05 MPa from 0 to -5 MPa and 1% from -5 to -300 MPa.

HYPROP is a fully automated measuring and evaluation system based on Schindler’s evaporation method (1980) to determine the hydraulic properties of soil samples. 

HYPROP measures the matric suction values at different saturation levels based on the evaporation method (Range 0.1-100kPa).

With tensiometers in two depths, the device measures the soil water tension as well as the unsaturated hydraulic conductivity. 

Additionally, the volumetric water content is calculated through continuous recording of weight loss.

The MPS-6 is a matrix water potential sensor that provides long-term, maintenance-free soil water potential and temperature readings at any depth without sensitivity to salts.

The range of the MPS-6 goes from field capacity to air dry.

Lab and field tests indicate that it can make accurate measurements at water potentials at least as dry as permanent wilting point.

EM-50 Data Loggers are used to measure volumetric water content, temperature and electrical conductivity in soil.

The matrix potential sensors are plugged into the 5 channels of the EM 50 data logger and these channels are housed in a weatherproof enclosure with an O-ring seal.

With minimal battery usage, the EM-50 can take readings as often as once per minute for over a year.