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OCT Compound


OCT Compound for Cryostat Sectioning

No residue or background staining. Freezes specimen matrix for cryostat sectioning at temperatures <–10°C. Formulation of water soluble glycols and resins. No residue on slides during staining procedure. 4 oz. bottle.


Cryo emb. compound


PELCO® Cryo-Embedding Compound is a water soluble glycol medium for use in embedding for frozen sections. This low viscosity compound assures reliable freezing and smooth sections. PELCO® Cryo-Embedding Compound is a fully compatible, cost effective alternative to Product #27050, Tissue Tek® O.C.T. Compound.


FS-8500 Freeze Substitution System

The FS-8500 Freeze Substitution System is designed with safety & operator convenience in mind. With a large volume, easy access, top loading, temperature controlled substitution chamber samples are slowly and gently dehydrated in a solvent solution, following which they are embedded in resin blocks for room temperature sectioning.

Cryofixed samples, typically stored in LN2, are transferred into the FS-8500 where the substitution solvent is pre-programmed to a temperature below that where secondary ice crystal growth can occur.

The FS-8500 uses liquid nitrogen as a coolant to achieve a base operating temperature of –140C (133K) which is well below the ice recrystallization temperature in any biological structure. The temperature of the substitution chamber is set & regulated by the included laptop computer to an accuracy of better than +/- 0.5C over the range from -140C to +50C.

The FS-8500 is a free standing, caster wheel mounted, system with a large, stainless steel worktop mounted to its 50 liter low-loss LN2 Dewar. The temperature controlled substitution chamber is conveniently located in the center of the worktop for easy access. The chamber is provided with a viewing port/cover, which is removed to gain access into the substitution workspace. As it is removed, the ventilation system is automatically turned on to extract fumes and the chamber internal illumination is turned on.

These features combine to make the FS-8500 an extremely convenient to use and versatile Freeze Substitution System.


Supplied complete with:

  • a low-loss 50 liter LN2 Dewar
  • Stainless steel work table
  • Computer
  • Large Top-access Substitution Chamber with built-in
  • Illumination exhaust fan
  • Removable cover
  • Universal Specimen Holder Cup (400907)
  • Inverted Polymerization Holder Cup (400915)
  • Transfer Tool (400920)
  • UV Polymerization Lamp

Dimensions Work table: 26 inches (660 mm) x 26 inches (660 mm)

Height: 31 inches above floor (790 mm)

Power Requirements 90-120 VAC 60 Hz or 220-240 VAC 50 Hz

Dewar 50 Liter LN2 capacity low-loss stainless steel, mounted on caster wheels

Temp Range -140C to +50C ±0.5 C