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Microsoft WT-50 BrightMax White Sealing Film 50/Case — main product image
Microsoft

Microsoft WT-50 BrightMax White Sealing Film 50/Case

BrightMax WT-50 white vinyl sealing film optimized for maximizing signal intensity in luminescence microplate assays.

$43.34*
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The BrightMax WT-50 is a white vinyl sealing film engineered for researchers running luminescence assays on white microplates. Made from 203 µm thick white vinyl with a 37 µm acrylic adhesive layer, the film reflects light back into the well rather than absorbing or transmitting it, which directly improves signal intensity and signal-to-noise ratios. Each film measures 76.2 x 116.0 mm, sized to cover standard microplate formats, and features a split backing that allows controlled, bubble-free application — a practical detail that reduces waste from misapplied seals.

Beyond luminescence work, the WT-50 serves a secondary role in microscopy workflows, where it can be used for mounting and storing filter plate samples such as those generated in ELISPOT assays. The film can be applied to either the top or bottom of the plate, giving researchers flexibility to match their plate reader configuration. Each case includes 50 films, making it a practical bench stock item for labs with moderate throughput in luminescence-based screening and diagnostic protocols.

Key Features

White light-reflecting sealing films for use with white microplates

May be applied to top or bottom of plate

Maximize intensity and signal-to-noise ratios in luminescence assays

Additional applications for mounting and storage of filters for microscopy, for example in ELISPOT assays

Specifications

Brand
Excel Scientific (BrightMax)
Model
WT-50
Material
White Vinyl, 203 µm thick
Adhesive
Acrylic, 37 µm
Film Dimensions
76.2 x 116.0 mm
Backing
Split backing for easy application
Quantity per Case
50
Primary Application
Luminescence assays with white microplates
Additional Applications
Microscopy filter mounting and storage (e.g., ELISPOT)
Plate Application
Top or bottom of microplate

Pros & Cons

👍 Pros

  • White light-reflecting surface maximizes signal-to-noise ratios in luminescence assays compared to clear or foil alternatives.
  • Split backing simplifies precise application and reduces the risk of misalignment or air bubbles.
  • Dual-side application allows use on either the top or bottom of the microplate for flexible assay setups.
  • Versatile enough for both luminescence work and microscopy filter storage such as ELISPOT.

👎 Cons

  • White vinyl material is not suitable for absorbance or fluorescence assays that require optical transparency.
  • Pack of 50 may be insufficient for high-throughput labs running large screening campaigns.
  • Acrylic adhesive is single-use and does not allow repositioning once firmly pressed onto the plate.
  • Not designed for thermal cycling or high-temperature applications.

Frequently Asked Questions

The WT-50 is specifically designed for use with white microplates, where its white light-reflecting surface helps maximize luminescence signal intensity.
Yes, the film may be applied to the top or bottom of the plate depending on your assay configuration and reader orientation.
It is also used for mounting and storage of filters for microscopy applications, such as in ELISPOT assays.
Each case contains 50 sealing films.
Yes, the WT-50 features a split backing that allows you to peel and position the film precisely without touching the adhesive surface.

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