Freezing Stages for Microtomes

The BFS-MP Series temperature controlled freezing stages for microtomes from Physitemp are available in 3 sizes. Each system comprises a controller unit and stage. The system is specified based on the stage size required.

Stage Features:

• Will freeze tissue sections from any microtome
• Fast freezing preserves cell detail
• Freeze to temperatures as low as -40°C
• Temperature adjustable for optimum cutting
• Quick thaw for easy cleanup
• No CO2 needed-minimal cost to run

Controller Features:

• 110 and 220V operation by switch selection
• Temperature control to within 0.5°C in the range of -40°C to ambient
• Thaw switch to quickly defrost frozen samples
• Over temperature alarm with power shut down in the event of inadequate flow of cooling water or overuse of the thaw feature
• Controller incorporates fan assisted internal cooling to maintain low internal temperatures
• Continuous display for both set and run temperatures
• Single temperature control set-up
• Auxiliary switched AC output for accessories

BFS-3MP

Temperature Controlled Surface Area     1.25” x1.5”

BFS-5MP

Temperature Controlled Surface Area     1.5”x 1.5”

BFS-40MPA

Temperature Controlled Surface Area     3” x 3.125”

Related Accessories

PTU-3 Pump and Tank Unit

The PTU-3 Pump and Tank Unit is designed for use with Physitemp’s range of thermoelectric cooling and heating stages. It provides a convenient reservoir of cooling water when a stage is operated in the cooling mode for an extended period of time in a location which has no source of tap water nearby to cool the hot side of the thermoelectric heat pump. The reservoir tank holds seven gallons of water, which is will adequately run the TS-4 series Thermal Microscope Stage for up to eight hours.

Water is circulated using a quiet 1/25 horsepower single phase motor and magnetically driven pump so there are no rotating seals to leak or replace. Self-sealing connectors are used on the inlet and outlet water connections to prevent spillage. Ice cubes may be added to the tank in order to extend the operating time or reduce the lowest temperature to which a thermoelectric stage can cool. A switched accessory outlet on the rear of all thermoelectric controllers is used to power the pump so water starts flowing immediately when the controller is turned on.

SF-1 Replacement Sediment Filters

Box of 3 replacement filters for use with WF-1 In-Line Sediment filter.

WF-1 In-Line Sediment Filter

For use with our extensive range of thermoelectric cooling and heating stages. The filtration system comprises a compact tabletop unit with a clear plastic filter housing. Water connections are made from the water supply and to the thermoelectric state using the standard quick/disconnect self sealing water fitting used on all Physitemp’s current stages.

We recommend the use of the WF-1 Sediment Filter with all BFS and TS series stages that are either directly connected to an unfiltered tap water supply or are using a PTU-3 Pump and Tank Unit system filled with unfiltered tap water. If the PTU-3 is used with distilled water, sediment in the reservoir should be minimal and the WF-1 may not be required.

A five micron particle filter is supplied in the filter housing. This filter prevents the accumulation of sediment in the waterways of the stage heatsink, thereby maintaining maximum heat exchange efficiency. Condition of the filter is clearly visible through the filter housing and filter replacement requires no tools and can be accomplished in a few minutes. Recommended filter replacement period is 4-6 months, depending on severity of the problem.