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Smoke Toxicity Test Equipment (Squirrel Cage Method)

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Whats/App: +86 185 0176 3615

Web: qinsun-lab.com

The GB/T 20285 Material Smoke Toxicity Test Apparatus (Mouse Cage Method) is a specialized testing system developed in accordance with GB/T 20285-2006 for evaluating the toxicity hazards of smoke generated by building materials during combustion. The apparatus is primarily used to assess the biological toxicity of smoke under stable smoke-generation conditions and serves as an important basis for determining the combustion performance classification of B- and C-grade composite (sandwich) building materials. By combining controlled thermal decomposition with animal exposure testing, the system provides a scientific and reliable method for fire safety evaluation of construction materials.

Standards

The test apparatus complies with the following national and international standards:

(1) GB/T 20285-2006 – Classification for Toxic Hazard of Smoke Generated by Materials

(2) ISO 19700:2006 – Controlled Equivalence Ratio Method for the Determination of Hazardous Components of Fire Effluents

(3) DIN 53436 – Testing of Thermal Decomposition Products of Materials under Ventilated Conditions and Their Toxicological Evaluation

Parameters

ItemSpecification
Quartz Tube & Quartz Boat Made of quartz glass
Quartz Tube Nominal Diameter (36 ± 1) mm
Quartz Tube Wall Thickness (2 ± 0.5) mm
Quartz Tube Length 1000–1300 mm
Quartz Tube Support Adjustable horizontally and vertically
Smoke Collection & Distribution Assembly Three-way stopcock, dilution gas inlet pipe, gas distribution elbow
Gas Flow Pipe Nominal Diameter (36 ± 1) mm
Mouse Rotating Cage Aluminum plate stamping
Rotating Cage Mass (60 ± 10) g
Exposure Chamber Transparent organic glass
Exposure Capacity Up to 10 mice simultaneously
Temperature Control System Thermocouple, cold-junction compensation, temperature controller, digital display
Furnace Movement Drive Stepper motor
Movement Speed (10 ± 0.1) mm/min
Adjustable Speed Range 5–50 mm/min
Maximum Travel Distance > 600 mm
Carrier & Dilution Gas Compressed air
Air Flow Rate 0–20 L/min adjustable

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