Critical Point Dryers

Tousimis® is pleased to add the 931 Series
to our advanced line of Critical Point Dryers
• Advanced 931 series of Critical Point Dryers now available in 1.25″, 2.5″ and 3.4″ chamber sizes.• These CPD’s allow a new level of precision process control with an even wider spectrum of samples that can be automatically processed.

• The 931 is also available with “stasis” software (Patent Pending) specific for drying gels and the more challenging samples.

• The system has the option of the “quick release” sample holder to process samples down to 2 µm in size.• The 931 also permits the operator to program and save specific recipes.

• Includes other standard tousimis innovations: easily accessible post purge filter, chamber inserts, gentle fill …


  • Bright LCD Touchscreen Control
  • Factory Default settings or create and save
    Custom Programs or “recipes” catering to
    your specific sample
  • Easy view placement of micro metering valves
    with vernier handles that include a Slow Fill for
    the most delicate sample
  • Complete internal 0.5 micron particle filtration
    to protect samples and valves
  • Fast adiabatic chamber cooling (Less than one
    minute for 1.25″)
  • External mount post purge filter assembly,
    protects valve and allows easy maintenance access
  • Internal Condensing muffler, captures and eliminates purge exhaust noise
  • EZ top loading process chamber that is under light for easy viewing
  • Non mechanical purge stirring for complete purge with no moving parts to break
  • Available with ‘Stasis” software (Patent Pending) that give complete range control with gels and more challenging samples while allowing samples to take advantage of lower density and viscosity parameters of both LCO2 and alcohol for complete LCO2 replacement and sample processing.
  • Modern Cabinet with clean room static-free design
  • All electronic components meet CE, UL and/or U.S. Military specifications

  • Cabinet: (W) 15.0″ (38.0cm) x (H) 13.25″ (33.5cm) x (D) 20″ (50.8cm)
  • System Set-Up Area Required: (W) 24” (61cm) x (D) 22” (56cm)
  • Chamber size: Available in three sizes
    1.25″ ID x 1.25″ Depth (31.75mm ID x 31.75mm Depth) – 25 ml Volume
    2.50″ ID x 1.25″ Depth (63.50mm ID x 31.75mm Depth) – 100 ml Volume
    3.40″ ID x 1.25″ Depth (86.36mm ID x 31.75mm Depth) – 186 ml Volume
  • Pressure Gauge Range: 0- 2000 psi, Temperature Range – 40°C to 60°C
  • 120 V/50-60 Hz, 5A (other voltage units also available, Please inquire)
  • Resistive Touchscreen VGA LCD

  • Flexible High-Pressure braided stainless steel inert Teflon® lined LCO2 Supply Hose, 10ft (3.0m)
  • External LCO2 Filtration System (#8784) removes water/oil and particulates down to 0.5µm conveniently pre-installed onto your LCO2 High Pressure Hose
  • Static Free Exhaust Tubing for both PURGE/VENT/BLEED and COOL exhaust lines
  • Flow Meter supplied allows precise BLEED Exhaust Rate Flow Control
  • Spare chamber O-ring (2), chamber lamps (2), and 5A slo-blow fuses (2)
  • User Manual and Check-Out Data Sheet
  • 2 year warranty on all parts and labor
  • Free lifetime technical support