An experimental evaluation was conducted on the bench-scale test methods most commonly applied for generating data for fire toxicity assessments. The test methods evaluated were ISO/TS 19700, ISO 5660-1 with the controlled atmosphere box, and ISO 5659-2. Toxic gases were quantitatively analyzed using Fourier transfer infrared spectroscopy. Tests were made with 11 different insulation materials and polymethylmethacrylate as a reference material. The evaluation made was on the combustion conditions in the test apparatus, not generally on the precise yields measured. The evaluation focused on the ventilation conditions created in flaming combustion tests. It was seen that ISO/TS 19700 currently offers the best means among the three test methods evaluated for conducting tests at pre-determined and controlled equivalence ratios. The controlled-atmosphere cone calorimeter does not give a prolonged steady flaming combustion period for most materials and the influence of vitiation was difficult to predict and limiting in achieving higher equivalence ratios, with the test settings applied. ISO 5659-2 generally accumulates a mixture of gases from periods of both flaming and nonflaming combustion in a test, and the yields measured do not, in those cases, represent any specific combustion stage. For materials not showing flaming combustion, for example, mineral fiber products, the influence on the test conditions regarding oxygen consumption and heat generation from the material itself is limited compared to burning materials. However, there were specific properties and limitations of the different test methods observed that are important to consider.

中文翻译：

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用于火灾废水毒性研究的测试设备中当量比的实验评估

对最常用于生成火灾毒性评估数据的小规模测试方法进行了实验评估。评估的测试方法是 ISO/TS 19700、带有可控气氛箱的 ISO 5660-1 和 ISO 5659-2。使用傅立叶转移红外光谱对有毒气体进行定量分析。使用 11 种不同的绝缘材料和聚甲基丙烯酸甲酯作为参考材料进行了测试。所做的评估是在测试设备中的燃烧条件上进行的，而不是通常根据测量的精确产率进行的。评估的重点是在火焰燃烧测试中产生的通风条件。可以看出，ISO/TS 19700 目前提供了三种测试方法中最好的方法，用于在预定和受控当量比下进行测试。对于大多数材料，可控气氛锥形量热仪不会提供延长的稳定燃烧期，并且在应用测试设置时，难以预测和限制腐蚀的影响以实现更高的当量比。ISO 5659-2 通常在测试中累积来自有焰和无焰燃烧期间的气体混合物，在这些情况下，测得的产率并不代表任何特定的燃烧阶段。对于不显示火焰燃烧的材料，例如矿物纤维产品，与燃烧材料相比，材料本身对耗氧量和发热的测试条件的影响是有限的。然而，观察到的不同测试方法的特定特性和局限性是需要考虑的重要因素。