EMF Measurement Equipment & Shielding Materials
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EMF shielding fabric BLACK-TRICOT | HF+LF | Width 137 cm

EMF shielding fabric BLACK-TRICOT | HF+LF | Width 137 cm


*Note: To purchase a custom length of fabric, place an order for multiple quantities of the 1ft option. The amount ordered will be cut as a single piece unless specified otherwise.
Order quantity: This product is cut off according to your specifications, a return or revocation is not possible. 
Screening attenuation: All stated attenuation values apply at 1 Ghz. Measurement to ASTM D4935-10 or IEEE Std 299-2006 or IEEEE Std 1128-1998 or ASTM A698/A698M-07. You find the test report above under "Report screening attenuation".
Grounding: Electrically conductive. Can be contacted and grounded to shield electric fields (LF). We recommend a plug GP or GD, with a plate GM or GS, plus a cable GC.
Fabric care: Washing at gentle cycle 30°C | No ironing | No drying in tumble dryers | No bleaching | No chemical dry-cleaning | For allergy sufferers: Every new fabric smells, wash before its first usage!
Silver products: 1) Silver fabrics get stainings over time and often have them right from the start! If you don’t want to accept stainings or discoloration, please choose fabrics from Swiss-Shield®.
Application: Technical, Clothing, Window, Textile products, Curtain, Earthing
Field type: HF (High frequency electromagnetic fields), LF (Low frequency alternating electrical fields)
Ecology: High
Color: Black, Metallic


BLACK-TRICOT is a two-ply fabric from our Silver-Tricot combined with black cotton for the protection against high-frequency (HF) and low-frequency radiation (LF). Typical application for sewing textile products like articles of clothing, but also as curtain. For the sewing of clothes you may use the cottonside  for the in- or outside of your garnment. As the silver layer is reacting with sweat we would recommend to sew the silverside away from your body.

Special features: 1) Our fully silvered Silver-Tricot was combined with a black cotton fabric. The cotton fabric is colored black, as thin white cotton would show uneven spots (staining). It took a whole year of developing to join the tissues to one fabric. We had to make sure that the tissues will be permanently and stable bonded. 2) Due to the heavy silvering the Silver-Tricot fabric side is loosing very little attenuation through washing and movement only.

  • The silver side is certificated according to OEKO-TEX® 100, product class 1
  • Contactable (groundable) to shield LF electric fields
  • Textile similar characteristics: Washable, easy to process. Exception: Do not iron.
  • Quality grade: Very high

Technical data

  • Width: 137 cm, +/- 2 cm
  • Length: Available by the foot
  • Attenuation: 47 dB, two-layer 60 dB
  • Color: Black / Metallic
  • Raw materials: 50 % cotton, 40 % nylon, 10 % silver
  • Weight: 30 g/m²
  • Dimension stability: +/- 1 %
  • Surface conductivity: 1.0 ohm / inch (2.54 cm)

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