Bright OTF5000 Cryostat

Bright Instruments


The OTF5000 is the latest edition to the Brights product range of cryostats.
It is very unique with it’s new styling coupled with improved user ergonomics and the latest blade systems in the ever-reliable and powerful 5040 microtome.
The OTF5000 cryostat’s are suitable for an array of applications and, in the correct configuration, are capable of cutting a wide diversity of specimens from undecalcified bone to brain, resins, plastics and plant tissue, as well as more usual soft tissue. Allowing full anti-roll plate adjustment for perfect results coupled with long lasting temperature stability, the OTF5000 Cryostat can truly be described as complete.

SKU: OTF5000 Categories: , ,


» The OTF5000 cryostat has a new contoured top for added operator comfort and usability
» Suitable for research and clinical operation
» Uses solid knives or disposable blades including new lever release Feather blade holder
» Available in 2 different working heights
» Automatic evaporator defrost supplied as standard
» Non-urgent functions on side panel

» Long list of options and accessories
» Contains tried and tested 5040 rotary microtome

The following 3 configurations are available:
» Basic Instrument includes Quick Freezer, Internal shelves, Evaporator defrost, Manual cutting system, 5040 microtome with fixed head, Heated window surround, Window demist system, Analogue defrost clock, Side mounted non urgent controls and a full set of accessories.
» LS Specification includes all of the features of the basic instrument and in addition: 2 speed motorised advance/rewind, Fine object orientation and Cryomatic specimen temperature control.
» HS Specification includes all the features of the LS specification and in addition : 6 digit section counter, Dual refrigeration and Motor drive.

For further information and specifications, click here

Additional information

Available Options

OTF5000 Basic, OTF5000 LS, OTF5000 HS


Polished stainless steel construction

Quick freezer

9 position, running at 10º C below chamber temperature, ultra low temperature –80ºC version can be factory fitted at extra cost

Minimum chamber temperature

Single compressor –35ºC

Compressor type

1 x 15cc displacement
2 x 15cc displacement (for /EC or /LT options)


Ozone friendly HFC refrigerants

Lowest set temperature

Ambient to –35ºC with automatic defrost. Lower Temperature options are available: ambient to –40ºC (/EC) and ambient to –45ºC (/LT)


3 internal, 1 external

Chamber temperature control

Microprocessor with LED display

Evaporator defrost

Automatic with analogue clock

Cutting system

Manual with balanced handwheel


5040 rotary microtome with beryllium hinges

Section range

0.5 to 30µm in 0.5µm increments

Maximum head advance


Maximum knife block adjustment

44mm (Coarse control)

Knife angle adjustment


Window surrounds


Window demist system

Fan driven, automatic

Surface finishes

Easy clean, scratch and solvent resistant, flame retardant

Defrost clock

Analogue with battery back-up

Non urgent controls

Side mounted

Low working height


Normal working height