WP4 Calibration Standards

Inquire about our automatic ordering system. It allows you to create a recurring order of verification standards and/or sample cups based on your historical purchase pattern.

You can verify the performance of your WP4 using Decagon's 0.5 molal KCl Verification Standards, which have a water potential of -2.19 MPa. Verification checks can alert you to the possibility of a contaminated sensor or other factors that may have shifted the linear offset (see the WP4 Operator's Manual for linear offset details).

We offer five water activity levels:

• 2.22 MPa

A variety pack of 12 vials is sent with your instrument purchase. Additional standards can be purchased in boxes of 50.

Though it is possible to mix your own verification standards, this process can be inaccurate and time-consuming.