The Best ASTM Face Masks

With Rensa ClearCare Pro™ and ClearCare Ultra™, you don’t have to sacrifice comfort for safety. Our ASTM rated surgical masks provide the ultimate in breathability, comfort and filtration efficiency. With greater than 99% particulate and bacterial filtration, our Level 2 and Level 3 disposable face masks meet or exceed ASTM acceptance criteria.

Boxes of Level 2 and Level 3 surgical masks

A Clear Difference in Quality

Rensa ClearCare surgical masks deliver superior performance and quality.

Soft, non-irritating materials and polypropylene ear loops for all-day comfort.

Our innovative filtration layer is designed for low pressure drop and maximum breathing comfort.

filtration efficiencyFILTRATION EFFICIENCY
Our masks use the same filtration material as an N95 respirator and meet or exceed ASTM criteria for both particulates and bacteria.

american madeAMERICAN MADE
We source our materials domestically and have our own manufacturing lines to guarantee quality and availability.

Our masks are competitively priced for the quality and performance they deliver. We outperform the competition

White surgical mask with middle filtration layer

Certified to Protect. Tested to the Highest Standards.

Our PPE is tested to ASTM standards—the world’s leading technical standards for fluid resistance, filtration and breathability.

Our masks were tested by Nelson Labs, the only U.S.-based laboratory testing face masks to ASTM standards. Rensa ClearCare Pro and ClearCare Ultra meet or exceed ASTM standards for particulate filtration efficiency, bacterial filtration efficiency, differential pressure (breathability), fluid resistance and flammability.(1,2)

 ASTM Level 2 ASTM Level 3 
ClearCare Pro ResultsASTM Acceptance CriteriaClearCare Ultra ResultsASTM Acceptance Criteria
Particulate Filtration Efficiency (PFE)>99.8%≥98% particles 0.1 μm>99.8%≥98% particles 0.1 μm
Bacterial Filtration Efficiency (BFE) (tested with Staphylococcus aureus)>99.5%≥98% bacteria 3.0 ±0.3 μm>99.5%≥98% bacteria 3.0 ±0.3 μm
Differential Pressure* Delta P (mm H20/cm2)<3.0 mm H20/cm<5.0 mm H20/cm2<3.0 mm H20/cm2<5.0 mm H20/cm2
Fluid Resistance (tested with synthetic blood)32/32 pass at 160 mm Hg29/32 pass at 160 mm Hg30/32 pass at 160 mm Hg29/32 pass at 160 mm Hg
FlammabilityDid Not IgniteClass 1: Burn time ≥3.5 secondsDid Not IgniteClass 1: Burn time ≥3.5 seconds
CytotoxicityPASS Non-CytotoxicPASS Non-Cytotoxic
SensitizationPASS Non-sensitizingPASS Non-sensitizing
Skin IrritationPASS Non-irritatingPASS Non-irritating

*Differential pressure is a measure of breathability. The lower the differential pressure, the easier the mask will be to breathe through.

From Nelson Lab reports dated July 08 2020 (for Rensa ClearCare Pro) and July 06 2020 (for Rensa ClearCare Ultra); subsequent batches may vary in exact test numbers but are guaranteed to meet or exceed ASTM standards.


The Making of Our Mask

3 Layers of Protection

Our ASTM-rated masks are crafted with three layers for maximum comfort, breathability, filtration efficiency and protection.

Rensa ClearCare®

  1. 3 Layers of Protection
  2. Nose Bridge Strip for Better Fit
  3. Comfortable Ear Loops
  4. Sturdy Construction
US facility producing three protective layers for face masks.
Electrostatic Attraction

The Middle Matters: Breathability vs. Filtration Efficiency

The filtration efficiency of a mask is directly related to the quality of the material it is made with. Masks made with subpar materials may have to add filtration layers or use more airtight materials to achieve the filtration efficiency required for ASTM ratings. This means they sacrifice breathability for filtration efficiency. 


N95 Filtration Efficiency in a Surgical Mask

The meltblown filtration layer uses the same filtration material (meltblown nonwoven polypropylene) used in N95 respirators. That means they offer some protection for the wearer as well as for others. They do not offer the same total protection as an N95 respirator, because they are not fitted to the face. That means it IS possible for tiny airborne particulates and respiratory droplets to enter the breathing zone through the sides, top and bottom of the mask. However, air going directly THROUGH the mask will be filtered with high efficiency. (3,4)

Surgical team wearing white surgical masks