Toxicity Index EN 50305

The Tube Furnace Toxicity test method is used in the assessment of toxic or corrosive products during decomposition or combustion. 

The apparatus is a small scale static tube furnace in which the test specimen (typically 1 gram or 0.1g for low density materials), is pushed, in a crucible, into the middle of the furnace tube and thermally decomposed. Furnace temperatures of 400, 600 and 800°C tare used to represent oxidative pyrolysis, well-ventilated and under-ventilated conditions in flowing air at 2 litres min-1, where they may pyrolyse and auto-ignite. For most materials at a temperature of 400°C they will not ignite, so the condition is oxidative pyrolysis. At a temperature of 600°C, the rate of pyrolysis may be fairly slow, giving a well-ventilated fire condition, whereas at 800°C the fire condition may be closer to under-ventilated as the rate of pyrolysis exceeds the stoichiometric air supply rate. The effluent is driven through gas detection bubblers and gas bags for subsequent analysis. 

Horizontal tube furnace with the following dimensions: bore diameter 65mm; overall length 625mm; heated length 550mm; with operating temperature up to 1100°C, complete with temperature controller and display. 

Key Highlights: 

• Infrared Carbon Monoxide Analyzer 0 to 10% conc. 
• Infrared Carbon Monoxide Analyzer 0 to 20% conc. 
• Spectrophotometer 500 nm 10 mm thick cell for Hydrogen Cyanide 
• Colorimetric Tubes and Drager Pump