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Samdri 795 semi-automatic critical point dryer

Semi-automatic critical point dryer with advanced auto-pressure and temperature control

SAMDRI®-795 offers robust, solid-state circuitry and simple push-button, semi-automatic critical point drying operation. The key processes of critical point temperature and pressure regulation are fully automatic. By utilizing the many pre-sets and internal controls, precise and reproducible results are ensured. The 795 features indicator LEDs which signal every mode of operation at a glance and a bottom-lit chamber for clear observation of chamber and specimens. The optional SOTER™ condenser captures waste alcohol and deadens exhaust noise

The chamber has an internal diameter of 31.75mm and a depth of 31.75mm.

There is a wide selection of specimen holders to suit most specimen types – please see below for details.

  • Simple push-button operation control
  • Indicator LEDs signal every mode of operation at a glance
  • Precise flow control for inlet, cooling, purging, venting and bleed micro-metering valves
  • Vernier metering valves – reproducible process settings
  • Internal surfaces inert to LCO2 and ultra-pure alcohols
  • Integrated automatic temperature control
  • Static pressure control module – automatic pressure stability
  • Top-mounted valves – easy loading/unloading of process chamber
  • Internal filtration – protects specimens and valves down to 0.5µm
  • Bottom-lit chamber with viewing port –  aids visualisation of chamber and specimens
  • Fast adiabatic chamber cooling with CO2
  • Safe operation – fitted with rupture disk (activates @ 2000 psi) and pressure relief valve (activates @ 1250-1350 PSI)
  • Optional SOTER™ condenser – captures waste alcohol and reduces exhaust noise

Specimen holders 

8761 TEM grid holder
The most advanced new design holds 12 x 3.05mm grids (may also be used to hold smaller sized wafers). Includes numbered slots for easy specimen identification and processing in the SAMDRI®.

Specification:
Mesh type: SS316 40 x 40
Opening size = 0.3mm
Approximate outer dimensions:  25.4mm Ø 25.4mm

8762 holder for 12 specimens

For 12 specimens, each compartment is 7.5mm in diameter and 6mm in height.
Each compartment has alternative numbers stamped on it for easy specimen identification.

Specification:
Mesh type: SS316 40 x 40
Opening size: 0.3mm
Approximate outer dimensions: 25.4mm Ø 25.4mm H

8764 holder for four specimens

For up to four specimens at a time, each compartment measures 9mm diameter 16mm height.
Each compartment has alternative numbers stamped on it for easy specimen identification.
 
Specification:
Mesh type: SS316 40 x 40
Opening size: 0.3mm
Approximate outer dimensions: 25.4mm Ø, 28.6mm H

8766 and 8767 cover slip holders

8766 (right image). Designed to hold and process up to ten  9mm to 13mm diameter glass cover slips.

Approximate outer dimmensions: 16mm Ø, 25.4mm H

8767 (left image). Designed to hold and process up to ten 16mm to 22mm diameter glass cover slips.

Approximate outer dimmensions: 25.4mm Ø, 25.4mm H

795 options

SOTER™ condenser

This option quietly separates waste alcohol from the carbon dioxide exhaust discharge from the PVD-3D process chamber.

Includes 375mm carboy exhaust tubing, 250mm condenser exhaust tubing, 75mm clear drain tubing and exhaust connection.

Dimensions: (W x D x H): 355mm x 178mm x 457mm

LCO2 cylinder scales with remote display

Liquid carbon dioxide cylinder (tank) scale with remote LCD readout display. Critical point drying requires liquid carbon dioxide (not gas) and the cylinder will have a draw tubes rather than a two stage regulator.

Using this option is the best way to monitor LCO2 consumption, which is based on cylinder weight and not pressure. 400lb capacity. Reads either Lb or Kg

To configure a working a Tousimis 795 you will require the following:

  1. Select optional specimen holders as required
  2. Optional LCO2 cylinder scales if required (useful for determining amount of LCO2 in the cylinder)
  3. Optional SOTER™ condenser (separates waste alcohol from the carbon dioxide exhaust discharge from the process chamber)

Add your required items using the quote buttons below and we will endeavour to provide your quotation as quickly as possible

Options and accessories
Specimen holders
8761 CPD holder for 12 standard 3mm TEM grids, fits standard 32mm CPD chamber
8762 CPD holder for 12 specimens, fits standard 32mm CPD chamber
8763 CPD holder for 24 specimens, fits standard 32mm CPD chamber
8764 CPD holder for 4 specimens, fits standard 32mm CPD chamber
8766 CPD cover slip holder for 9-13 round cover slips, fits standard 32mm CPD chamber
8767 CPD cover slip holder for 16-22 round cover slips, fits standard 32mm CPD chamber

Other options
8770-54 LCO2 cylinder scales with remote display

8777  Sotor condenser

Tousimis Samdri® 795 manual critical point dryer

Consisting of:

  • Precise flow control for inlet, cooling, purging, venting and bleed using vernier-controlled micro metering valves
  • Process chamber (31.75mm I.D. x 31.75mm depth), with viewing window and bottom-mounted light
  • Integrated automatic temperature control (fast adiabatic chamber cooling with CO2). Temperature gauge range: -30°C to 60°C
  • Internal filtration – protects specimens and valves down to 0.5µm
  • Tough, solvent resistant cabinet: 32.4cm x 24.8cm x 47.0cm
  • Flexible high-pressure braided stainless steel inert Teflon® lined LCO2 supply hose, 1.5m long LCO2 filter assembly (8784) removes water/oil and particulates down to 0.5µm. Static-free exhaust tubing for the
  • PURGE/VENT/BLEED and COOL exhaust outletsspare chamber O-ring, chamber lamps and 5A slo-blow fuses
  • User manual and check-out data sheet
  • Cabinet: 32.4cm (W) x 24.8cm (H) x 47.0cm (L)
  • System set-up area required: 51cm (W) x 76cm (D)
  • Chamber size: 31.75mm I.D. x 31.75mm depth
  • Temperature gauge range: -30°C to 60°C, pressure gauge range: 0 to 2,000 psi
  • 23oV / 50Hz
  • Flexible high-pressure braided stainless steel inert Teflon® lined LCO2 supply hose, approximate 1.5m long
  • LCO2 filter assembly (#8784) removes water/oil and particulates down to 0.5µm. Filter is conveniently pre-installed onto the LCO2 high pressure hose
  • Static free exhaust tubing for the PURGE/VENT/BLEED and COOL exhaust outlets
  • Flow meter supplied allows precise periodic BLEED exhaust rate flow control
  • Spare chamber O-ring (2), chamber lamp (1), and 5A slo-blow fuses (2)
  • User manual and check-out data sheet
  • Free lifetime technical support.
  • Two year warranty on all parts and labour

Tousimis are a specialist, family owned, manufacturer of critical point dryers for electron microscopy with proud history going back over 50 years. 

Ordering information:

Specimen holders

If you cannot find a holder for your application, please contact us and we may be able to help.

Other options