Why Temperature Control?
Though temperature control is usually unnecessary for most water potential measurement applications, there are some instances where it is desirable. For this reason, the WP4-T is offered. There are several advantages in having a temperature-controlled model. Here are a few major reasons: • Research purposes. To study the effects of temperature on the water potential of a sample, comparison of the water potential of different samples independent of temperature, or other water potential studies where temperature control is critical. • To minimize extreme ambient temperature fluctuations. If the laboratory and WP4 temperatures fluctuate by as much as 5°C daily, water potential readings can vary as much as -0.5 MPa on a dry soil sample.
