ULTIMA (Naturell Ultima) is another great addition to the SwissShield family of fabrics. Basically an improved version of the Naturell fabric. Very similar in appearance with higher shielding performance. Excellent skin friendly fabric for radio frequency shielding (cellphones and cell tower radiation, cordless phones, wi-fi, radar, microwave oven leakage, TV broadcast etc). Extremely thin silver coated copper wires are spun with cotton yarn, then woven into washable, comfortable, and durable fabric with the look and feel of normal fabric. OKEO-TEX 100 certified to contain no harmful substances, and independently tested for shielding performance. Low conductivity surface (106 Ohm/sq), no grounding needed. The fabric is highly conductive.
Ecological cotton fabric without chemicals translucent, unbleached ecological cotton fabric. Typical application as canopies, curtains or drapes.
Highest attenuation of the 4 SwissShield materials
Washable, easy to iron, cut and sew Low conductivity surface, cannot be easily grounded
Resistivity: 106 Ohm/sq
Extremely wide format (8.2 feet wide)
Attenuation: 28 – 42 dB for 4G and 5Ge* frequencies and > 22 db up to 12 GHz
Raw materials: 82% cotton, 17% copper, 1% silver
Weight: 88 g/m²
Dimension stability: 3%
Certificates: Öko-Tex 100 Class 1 (gentle enough for baby underwear)
DO NOT allow the fabric to come in contact with electric wires, outlets or switches. Cover nearby outlets with child safety caps. Does not contain flame retardant, use caution around open flames and heat sources.
Machine wash (gentle cycle), cold water. Hang dry. Iron without steam, low heat. No bleach. Do not dry clean.