Critical point dryer – fully automatic

Autosamdri®-931 is a fully automatic, digitally controlled critical point dryer with precision process control.

Autosamdri®-931 sets new standards for SEM critical point drying. It features intuitive touch screen control, allowing the user to enter preferred process recipes – or select from preinstalled factory defaults. Tousimis’s Stasis software gives the operator complete range control – especially useful for more challenging specimens. There is a full range of specimen holders designed to meet most requirements and a choice of three chamber sizes to meet the needs of large or multiple sample processing.
The process chamber is under-lit and has purge stirring to ensure complete fluid interchange.

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Tousimis Autosamdri 931 brochure

Autosamdri 931 presentation

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Fully automatic critical point drying
Choice of three chamber sizes: 32mm, 63mm or 86mm ID
Wide choice of specimen holders
Choice of factory default settings or create custom “recipes”
Bright LCD touchscreen control
Metering valves with vernier handles that include a slow fill for very delicate specimens
Internal 0.5µm particle filtration – protects specimens and valves
Rapid adiabatic chamber cooling – less than one minute for 31.76mm/1.25″ model
Internal condensing muffler – captures and eliminates purge exhaust noise
Top loading process chamber that is under light for easy viewing
Non-mechanical purge stirring for complete purge
‘Stasis” processing (patent pending) gives complete range control for thicker specimens

A choice of three chamber sizes

31.75mm/1.25″ chamber (8787A)

Empty chamber (left)
With optional 8762 twelve compartment specimen holder loaded

63.5mm/2.5″ chamber (8787B)

Images left to right:

Empty chamber
With four (8762) specimen holders
With spacer. Reduces LCO₂ use when a small holder is used

931-chamber-250-chamber-insert-holder_small

86.36mm/3.4″ chamber (8787C)

Images left to right:

Empty chamber
With four (8762) specimen holders
With spacer. Reduces LCO₂ use when a small holder is used

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 critical point drying 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 critical point drying 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 critical point drying 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 critical point dry up to ten 16mm to 22mm diameter glass cover slips.

Approximate outer dimmensions: 25.4mm Ø, 25.4mm H

To configure a working a Tousimis 931 you will require the following:

Select required specimen chamber size – 32mm, 63mm or 86mm ID
Select optional specimen holders as required
Select optional LCO2 cylinder scales if required (useful for determining amount of LCO2 in the cylinder)

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

8787A Autosamdri®-931 critical point dryer with 31.76mm/1.25″ diameter chamber
8787B Autosamdri®-931 critical point dryer with 63.5mm/2.5″ diameter chamber
8787C Autosamdri®-931 critical point dryer with 86.36mm/3.4″ diameter chamber

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
8771A Large capacity specimen holder 25mm/1inch for standard 32mm CPD chambers
8771B Large capacity specimen holder 51mm/2inch for medium 64mm CPD chambers

Other options
8770-54 LCO2 cylinder scales with remote display

Tousimis Autosamdri®-931 critical point dryer
Consisting of:
– Bright LCD touchscreen control
– Choice of factory default settings or create custom “recipes”
– Metering valves with Vernier handles that include a slow fill for very delicate specimens
– Internal 0.5µm particle filtration – protects specimens and valves
– Process chamber (31.76mm diameter) with rapid adiabatic chamber cooling
– Internal condensing muffler – captures and eliminates purge exhaust noise
– Top-loading process chamber that is under light for easy viewing
– non-mechanical purge stirring for complete purge
– ‘Stasis” software gives complete range control
– Modern cabinet (W) 38.0cm x (H) 33.5cm x (D) 50.8cm with static-free design
– 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 outlets
– spare chamber O-ring (2), chamber lamps (2) and 5A slo-blow fuses (2)
– User manual and check-out data sheet