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VECTASHIELD® PLUS Antifade Mounting Medium (H-1900)



VECTASHIELD PLUS protects against fading across the visible spectrum, even under far-red wavelengths. It is compatible with most commercially available fluorophores. This new formulation of non-setting media improves upon the original VECTASHIELD products. Specifically, VECTASHIELD PLUS exhibits no inherent background or toning and provides superior fluorophore signal retention across the spectrum, including far-red wavelengths.


  • No inherent toning or background
  • Superior signal retention across the spectrum from blue to far red
  • Mounted sections can be viewed in 1 hour
  • Available in two convenient sizes
  • Superior non-setting formulation


Unit Size2 ml, 10 ml
ApplicationsImmunofluorescence, In situ hybridization
Recommended Storage2-8 ºC
MountingAqueous (Non-Hardening)

Product FAQ

VECTASHIELD PLUS provides several advantages over the regular VECTASHIELD (H-1000 & H-1200). In particular, VECTASHIELD PLUS media have significantly lower inherent background​ toning and provide superior signal retention particularly in the far-red spectrum (e.g. Cy5).

Similar to other non-setting media, we recommend you to seal the coverslip perimeter if the intention is to store the slides for a period of time.

Yes, the antifade mounting media are at least equivalent in signal retention. We have not seen any reduction in performance with any fluorophores evaluated, and with some dyes (i.e. Alexa Fluor 647 and Dylight 649) there are advantages. 

We do know that regular VECTASHIELD antifade mounting media (H-1000 & H-1200) are suitable for SRM.​ However, the formulation for VECTASHIELD PLUS is different from that used for regular VECTASHIELD. Indeed one component of H-1000 and​ H-1200 that may have been a contributing factor to the underlying blue​ tone and that appears to play a key role in optimal signal for SRM, has​ been removed from VECTASHIELD PLUS. Therefore, until we have data to the ​contrary VECTASHIELD PLUS would not be recommended for SRM.

Technical Information

The refractive index for VECTASHIELD Mounting Medium is 1.45.

VECTASHIELD PLUS Mounting Medium does not solidify, but rather, remains a liquid on the slide—which can then be stored without sealing. If desired, coverslips can be sealed around the perimeter using nail polish or plastic sealant. Mounted slides should be stored at 2-8 °C and protected from light.

VECTASHIELD Mounting Medium Antifade Comparison

Other manufacturers measure the antifade properties of their mountants using labeled microspheres or arrayed spots. Vector Labs prefers to measure antifade properties of VECTASHIELD mountants using frozen tissue sections that have been immunohistochemically stained with fluorescently labeled secondary antibodies. Antifade capability is then measured using a 40x objective with real time imaging over 30 seconds of continuous exposure to the excitation illumination. Individual intensity measurements are recorded from 6 separate labeled regions and the average is calculated. The intensity after 30 second exposure is expressed as a percentage of the intensity at zero time. The values for PG are taken from the manufacturer’s published results.

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How to mount a coverslip on a slide

Correctly coverslipping your slides ensures that your tissue specimens are preserved for optimal imaging and viewing. In this blog post, we will walk you through how to properly coverslip your slides to protect your samples.

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How to choose antifade mounting media

As far as antifade mounting media go, one-size-fits-all solutions are few and far between. Here, we break down key factors you should consider when choosing the best antifade mounting medium for your experiment.

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Step by Step Protocol
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Product-specific information

Applicable patents and legal notices are available at legal notices.

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