Clear Mount Mounting Medium by EMS

A Direct Substitute for BioMeda Crystal Mount

      • Permanent water based mounting medium for immunoperoxidase and immunoalkaline phosphatase IHC stains.
      • Manufactured by EMS.

Product Options:

Part # 51921A 30 ml $98.60
Part # 51921B 250 ml $334.30

Clear Mount mounting medium is a permanent aqueous mounting medium designed for the mounting of tissue sections and cell smears with peroxidase and alkaline phosphatase chromogens that can not be dehydrated with organic solvents. This mounting medium preserves Fast red, Aminoethylycarbazole (AEC), BCIP/NBT, BCIP/INT chromogens and is also compatible with counterstain like Hematoxylin and Nuclear Fast Red. It is also suitable for chromogens like DAB and DAB with nickel and cobalt. It is not compatible with H&E staining.



  • Mounting of IHC slides that cannot be dehydrated with organic solvents.



  1. Bring the vial to room temperature.
  2. Rinse slide to be mounted with DISTILLED OR DEIONIZED WATER, touch the edges of slide on a paper towel to remove excess water. Place slides on a flat surface.
  3. Turn the vial upside down and open the dropper to remove any air bubbles. Apply 3-4 drops of mounting medium directly on top of the specimen and spread out evenly by tilting the slide back and forth or spread evenly with a 0.2 ml plastic pipette tip making sure the tissue is not touched. Excess medium can be removed by touching the edges of slide against a paper towel.
  4. Let stand at room temperature for about 1 to 2 hours. Or the slides can be heated at 37-40°C for 40-60 minutes. The slides are ready for visualization under a microscope.
  5. To visualize slide under microscope with 4X, 10X, 20X, or 40X lens coversilp is NOT required.



This product is stored at room temperature, however, for long term storage 2-8°C is recommended. The pH of this product is more stable at 2-8ºC. DO NOT FREEZE.



Soak the slide in warm (37°C) distilled or deionized water for 5-10 minutes until the mounting medium is dissolved. Rinse slide with warm water several times to remove all mounting medium; the slide can be remounted again if required.