闪点的测定 Pensky-Martens闭口杯法（ISO 2719:2025）

[中文适用范围]： 本文件规定了使用 Pensky-Martens 封闭杯测试仪测定易燃液体、含有悬浮固体的液体、在测试条件下容易形成表面膜的液体、生物柴油以及其他在 40 °C 至 370 °C 温度范围内的液体的三种程序，分别为程序 A、B 和 C。 注意 1：虽然从技术上讲，闪点高于 40 °C 的煤油也可以使用本文件进行测试，但标准做法是根据 ISO 13736 对煤油进行测试。同样，润滑油通常根据 ISO 2592 进行测试。 程序 A 适用于馏分燃料（柴油、生物柴油混合物、加热油和涡轮燃料）、新润滑油和在用润滑油、油漆和清漆，以及其他不在程序 B 或 C 范围内的均匀液体。 程序 B 适用于残余燃料油、改性残渣、使用过的润滑油、液体与固体的混合物，以及在测试条件下容易形成表面膜的液体，或者在程序 A 的搅拌和加热条件下因运动粘度过高而无法均匀加热的液体。 程序 C 适用于根据如 EN 14214 或 ASTM D6751 等规范中所规定的脂肪酸甲酯（FAME）。 本文件不适用于水性油漆和清漆。 注意 2：水性油漆和清漆可根据 ISO 3679 进行测试。含有少量高挥发性物质的液体可根据 ISO 1523 或 ISO 3679 进行测试。 [外文原描述]： This document specifies three procedures, A, B and C, using the Pensky-Martens closed cup tester, for determining the flash point of combustible liquids, liquids with suspended solids, liquids that tend to form a surface film under the test conditions, biodiesel and other liquids in the temperature range of 40 °C to 370 °C. NOTE 1 Although, technically, kerosene with a flash point above 40 °C can be tested using this document, it is standard practice to test kerosene according to ISO 13736.[ 5 ] Similarly, lubricating oils are normally tested according to ISO 2592.[ 2 ] Procedure A is applicable to distillate fuels (diesel, biodiesel blends, heating oil and turbine fuels), new and in-use lubricating oils, paints and varnishes, and other homogeneous liquids not included in the scope of procedures B or C. Procedure B is applicable to residual fuel oils, cutback residuals, used lubricating oils, mixtures of liquids with solids, and liquids that tend to form a surface film under test conditions or are of such kinematic viscosity that they are not uniformly heated under the stirring and heating conditions of procedure A. Procedure C is applicable to fatty acid methyl esters (FAME) as specified in specifications such as EN 14214[ 11 ] or ASTM D6751.[ 13 ] This document is not applicable to water-borne paints and varnishes. NOTE 2 Water-borne paints and varnishes can be tested using ISO 3679. [ 3 ] Liquids containing traces of highly volatile materials can be tested using ISO 1523[1] or ISO 3679.