Wescor's PSYPRO Eight channel water potential datalogger.

PSYPRO
The PSYPRO is a low-cost automated eight-channel water potential datalogger. It is designed for both laboratory and field water potential measurements using Wescor's sample chambers, soil psychrometer sensors, leaf psychrometer sensors. Outputs data in common MPa units.

Wescor's Markhart Leaf Press, model LP-27 

LP-27

Wescor's Markhart Leaf Press, model LP-27, is used to extract leaf sap from leaves and then collects the sample directly to a filter paper disc. The disc can then be inserted into a VAPRO or C-52 sample chamber for determination of osmotic potential. The LP-27 reduces errors induced by evaporation of the sample during collection

 Wescor's in situ soil psychrometers, model PST-55 and PCT-55.

PCT-55/PST-55

Wescor's in situ soil psychrometers, model PST-55 are buried within the bulk soil to determine the soil water potential. The PST-55 has a stainless steel screen to allow only the water vapor to enter the sensor. A ceramic screen is also available as model PCT-55.

Wescor's HR-33T Dew Point Microvoltmeter water potential scanner. 

HR-33T

The standard in water potential measurement, Wescor's Dew Point Microvoltmeter, model HR-33T, can determine water potential using both dew point and wet bulb methods. Its manual operation makes it ideal for teaching students about water potential determination using psychrometric principles.

 Wescor's sample chamber model C-52

C-52 and C-30

Wescor's sample chamber, model C-52, can measure the water potential of solutions, small soil or leaf samples, and leaf discs. The C-52 must be connected to a Wescor water potential instrument such as the PSYPRO, HR-33T, or CR7 for operation.

Wescor's Vapor Pressure Osmometer, model VAPRO 

VAPRO©

Wescor's Vapor Pressure Osmometer, model VAPRO, is specifically designed for laboratory use. It can be used to determine the water potential of leaf discs or osmolality of solutions. The VAPRO is self-contained and does not require any other Wescor instrument or sensor for use.

 Wescor's L-51 and L-51A <em>in situ</em> leaf psychrometer

L-51 and L-51A

Wescor's in situ leaf psychrometers, model L-51 and L-51A attach directly to a leaf to determine the leaf water potential. The L-51A has a smaller vapor chamber than the L-51 that was designed for use with grasses

Both leaf psychrometers must be connected to a Wescor water potential instrument such as the PSYPRO, HR-33T, or CR7 for operation.

Wescor's CR7 Multi-channel water potential datalogger. 

WESCOR/CAMPBELL

The CR7 is an automated multi-channel water potential datalogger. It is best suited when more than 16 water potential sensors will need to be scanned at regular intervals in the field or laboratory. Wescor soil and leaf psychrometers are mainly used with the CR7.
Wescor's Psychrometer Switchbox, model PS-10

PS-10

Wescor's psychrometer switchbox, model PS-10 allows up to 10 psychrometers/hygrometers to be connected to the HR-33T at one time. Selecting each psychrometer is accomplished by switching the PS-10 to each channel. Sensors must have the SF connector to be able to connect to the PS-10