A: Vocal problems, like polyps, are not restricted to singers. While singers require peak performance of their voice, other voice professionals, such as teachers, lawyers, clergy, salespeople and receptionists, are also at higher risk for many vocal cord problems.
The permissible operating temperature range of nitrile rubber is â40 to +100 Â°C (â40 to +210 Â°F). For brief periods, temperatures of up to 120 Â°C (250 Â°F) can be tolerated. SKF also offers a special nitrile rubber compound with a temperature range between â55 and +110 Â°C (â65 and +230 Â°F).
1 The Australian Standard AS 1837 â 1976 Code of practice for application of ergonomics to factory and office work recommends a temperature range of 21-24 degrees Celsius for both offices and factories in summer.2  The preferred winter temperature is usually about two degrees lower than in summer. The Australian Standard AS 1837 â 1976 Code of practice for application of ergonomics to factory and office work recommends a temperature range of 21-24 degrees Celsius for both offices and factories in summer.