Science

THE SCIENCE BEHIND THE MASK

The Next Era of Protective Masks

See what sets us apart from other masks.

MAXIMUM PROTECTION

About the Filter

Our G-Series Masks use a 4-ply filter composed of 4 layers of filtration materials. Air and mircroparticles are filtered 2 ways, both in and out of the filter. When using, the blue PP Meltblown Non-woven layer should face the direction of your mouth.

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NELSON LABS TEST

99.8% effective

Bacterial Filtration Efficiency

TEST CRITERIA

PM 2.5

Size of Particulates

TEST CRITERIA

28.3 L/min

Andersen Sampler Flow Rate

SUPERIOR SEAL

About the Mask

The CastleGrade G-Series Masks use a patent-pending design made from a soft, form-fitting silicone base. The natural self-suction offers a seal superior to surgical or cloth masks, while providing more comfort than traditional N95 masks.

ALPHA LAB TEST (Mask & Filter)

98.2% BFE

Bacterial Filtration Efficacy

TEST CRITERIA

PM 2.5

Size of Particulates

TEST CRITERIA

28.3 L/min

Andersen Sampler Flow Rate

U.S. Patent and trademark office

Provisional Patent

We have a provisional patent pending for a Reusable Silicone Mask with the United States Patent and Trademark office.

Reusable & Sustainable

Looking Forward For Solutions

Single-use plastics and protective gear is a problem. We strive to have our products truly embody a mindset of sustainability.

Our G-Series masks are reusable, thereby decreasing overall waste and minimizing the impact on our environment.

Medical-grade silicone

Medical-grade polycarbonate

4-Ply filter with >95% BFE

Medical-grade polycarbonate

Medical-grade silicone

BIODEGRADABLE PACKAGING

The Stone Bag

Our G-Series Masks and Replaceable Filters come safely sealed and packaged in the CastleGrade™ “Stone Bag”.
The packaging will completely biodegrade in 14 months and does not need to be recycled.