Magnaflux Sono 1100 Couplant – Extreme Temperature Magnaflux| 19460 Magnaflux Sono 1100 Couplant – Extreme Temperature Print Magnaflux| 19460 Magnaflux Sono 1100 Couplant – Extreme Temperature The Sono 1100 is a very high temperature paste couplant. For best results, allow a few seconds of melt time before taking reading. Signal attenuation may occur if used at lower than recommended temperatures. Temperature range: 371 to 413 Celsius (700 to 775°F). IMPORTANT: the Sono 1100 is non-toxic, non-irritating since it does not contains perfluorocarbons (PTFE) which when overheated are releasing gases that cause “polymer fume fever = a flu-like illness that can last up to 24 hours”. 30-T04: Sono 1100 couplant, 4oz (118ml) tube. 30-6XT04: Sono 1100 couplant, case of 6 tubes, 4oz (118ml) per tube. 30-901: Sono 1100 couplant, 1gal (3.78L) pail. Request for information