Filter face mask specifications

We are now a branded face masks supplier. Our fabric face masks are a valuable weapon in the war against COVID-19. Unlike other face masks in the market, ours has a carefully designed filter that has been tested and approved. With proper sterilisation in between uses, the filter can be reused up to five times. Our masks are a sustainable and cost-effective solution for keeping your employees safe and healthy while at work.

  • The filter is ISO 14644-8-approved
  • Our supply chain is secure
  • Masks are locally manufactured
  • Masks have Internal pouch to include the D15 filter
  • D15 filters need to be purchased seperately
  • Masks are not medical grade. There are no claims to prevent infection of any airborne viruses. These masks purely act as an additional barrier
  • MOQ: 100 units
  • Custom-branded if required
  • Reusable, non-woven, 100% polyester mini-matt outer fabric makes up the fabric envelope of the mask
  • Reusable D15 filter insert is ISO 14644-8-approved
  • Binding is included for face shape

We are primarily a branded face mask supplier, though we also offer:

  • Full-colour face masks
  • Black or white face masks
  • Roll-to-roll continuous pattern face masks
  • Adult size
  • Child size

D15 filter specification and cleaning procedure

The purpose of our D15 filter face mask is to protect individuals from the person wearing it. Wearing the D15 filter face mask will assist in preventing infectious people from spreading the virus via droplets. Our mask is ISO 14644-8-approved, verifying the hold-out ability of the filter material. The filter is an efficient mechanism for significantly reducing the spread of the virus.

As a branded face mask supplier, we have the responsibility to ensure our systems are efficient and safe for usage. To determine the effectiveness of our masks, an independent evaluation of the locally produced filter material. The filter passed under ISO-8 conditions. Micropartical studies indicate that the IPU D15 filter has an efficiency rate of over 95% for partial size 5μm.

  1. Remove the mask from your face carefully – do not touch the mask, remove by the straps only.
  2. Place the complete unit in a bowl and pour boiling water over it. Make sure it is fully covered with boiling water.
  3. Wash your hands using hand-washing protocols for COVID-19.
  4. Wash your face using COVID-19 protocols.
  5. Leave the complete mask in the hot water for at least 5 minutes.
  6. Rinse the mask under cold running water.
  7. If the mask has dirty marks on it, remove the filter and only then hand-wash the mask gently.
  8. Do not squeeze or hand-wash the filter. The delicate structure may be damaged.
  9. Leave both the filter and mask to air-dry. Once both components are dry, insert filter back into the mask, it is now ready to wear again.
  10. Once the filter has been sterilized five times, discard it after sterilizing and insert a new filter which must also be sterilized before use.

The face mask has an envelope design with a pouch containing the D15 filter. The mask is therefore a complete, reusable system. Both the fabric envelope and the filter element are designed to be safely sterilized on a daily basis. The filter element can be reused up to five times and the outer mask envelope up to 100 times. 

How to use the Yesman D15 filter face mask:
  1. Before putting on the mask, wash hands with alcohol-based hand rub or soap and water as per the COVID-19 protocols.
  2. Cover mouth and nose with the mask and make sure there are no obvious gaps between your face and the mask.
  3. Avoid touching the mask while using it. If you do, clean your hands with alcohol-based hand rub or soap and water.
  4. Wash your hands immediately after removing the mask.
 DescriptionMethodSpecificationTest Results
1CompositionChemical analysis

Chemical analysis

Chemical analysis
Polypropylene 38 – 42%

Polyester 48 – 52%

PAA 9 – 11%
Polypropylene 39%

Polyester 50%

PAA 11%
2ConstructionPhysical analysis3 Layer sandwich3 Layer sandwich
3Mass per unit areaSANS 79100gr/m2
± 5%
4BreathabilitySANS 6163>4500grms/m25631grms/m2
5AirflowASTM D737700 – 800cf m740cf m
6ThicknessSANS 853,0 – 4,9mm3,8mm
7Moisture particle entrapmentISO 14644-1

ISO 14644-2

ISO 14644-3
0,5µ – ISO 8 level

1,0µ – ISO 8 level

5,0µ – ISO 7 level


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