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PMS Instrument Company is the industry standard in pressure chamber instruments for agrculture and research.
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Grass Compression Gland

The Grass Compression Gland works just like our normal round stem compression gland system but is designed for sealing bladed grasses or corn.
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Designed for quick and easy sealing of bladed grasses. Corn too!

If your instrument is fitted with the Compression Gland already you will need the three items below. If your instrument does not have a Compression Gland, you will need to have your lid modified to receive the Compression Gland. Contact us directly for more information.

Grass Compression Gland

Grass Compression Gland

  • Oval shape adjustable hole (1/8 Inch wide X 3/4 Inch long slit).
  • 3/4 Inch minimum sample length (~19mm).
  • Recommended for bladed grass, corn, or other flat petiole samples
  • Range of compression: 1/8 Inch wide to completely closed.
  • Additionally works with Pump-Up Grass Lid
  • Requires Grass Compression Gland Base – As shown in far right picture
Grass Gasket
Grass Gasket Insert
Grass Gasket Assembly
Grass Gasket Base

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Browse pressure chamber instruments and related products for measuring plant water potential in agriculture and scientific research.
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Pressure Chamber Instruments for Agriculture Applications

Standard pressure chambers for routine plant water potential measurements.
Standard pressure chambers for routine plant water potential measurements in field and lab settings.

Model 600

Model 600D

Model 615

Model 615D

Pump-Up Chamber

Pressure Chamber Instruments for Research & High Stress Applications

Advanced chambers designed for higher pressures, and specialized research.
Advanced chambers designed for higher pressures, specialized research, and extreme plant stress studies.

Model 670

Model 1000

Model 1505D

Model 1505D-EXP

Model 1515D

Accessories

Specialty Chambers