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anhydrous mounting medium for microscopy

Quality Level

refractive index

n20/D 1.4171-1.4650

kinematic viscosity

305-427 cSt(20 °C)

transition temp

flash point 19.5 °C


0.819-0.822 g/cm3 at 20 °C


diagnostic assay manufacturing

storage temp.


General description

Neo-Mount -anhydrous mounting medium for microscopy, is an extremely color-stable, ready-to-use mounting medium for microscopy, which is produced with solvents based on mixtures of aliphatic hydrocarbons. It contains an aromatic-free substitute for xylene, thus, Neo-Mount needs to be combined with Neo-Clear (Product number 1.09843) exclusively. Xylene must be avoided in the mounting step, as it will cause the slides to become cloudy and streaked. The application of Neo-Mount is not recommended in fluorescence microscopy for clinical diagnostics. In addition, by placing the dehydrated slides on filter paper for approx. 1 minute prior mounting, any excess of Neo-Clear could be circumvented, as air bubbles might arise under the coverslip. The same precondition should also be met when mounting specimens using cover-slip machines; in this area, Neo-Clear can be most efficiently eliminated by incubation of the slides for one minute in an empty slide rack. Neo-Mount produces a clear and hard film under the cover slip and takes approx. 30 minutes to dry.
Neo-Mount is an IVD product and CE certified and is available as handy 100 ml dropper bottle or 500 ml glass bottle for small or high-throughput demands in the clinical laboratory. For more details, please see instructions for use (IFU). The IFU can be downloaded from this webpage.

Refractive index (20°C) 1.417 - 1.465
Viscosity (20°C) 250 - 350 mPa*s


100 ml in Plastic bottle

Analysis Note

Refractive index (n 20/D): 1.4171 - 1.4650
Viscosity (20 °C): 250 - 350 mPa∙s
Suitability for microscopy: passes test

Legal Information

NEO-CLEAR is a trademark of Merck KGaA, Darmstadt, Germany
NEO-MOUNT is a trademark of Merck KGaA, Darmstadt, Germany


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Hazard Statements

Hazard Classifications

Aquatic Chronic 3 - Flam. Liq. 2 - STOT SE 3

Target Organs

Respiratory system

Supplementary Hazards

Storage Class Code

3 - Flammable liquids



Flash Point(F)

67.1 °F

Flash Point(C)

19.5 °C

Certificate of Analysis

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Certificate of Quality

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