Laboratory glassware - Volumetric instruments - Methods for testing of capacity and for use (ISO 4787:2010, Corrected version 2010-06-15)
实验室玻璃器皿 - 容积式仪器 - 测试容量和使用方法(ISO 4787:2010 更正版本2010-06-15)
发布日期:
2011-03-02
ISO 4787:2010提供了由玻璃制成的体积仪器的测试,校准和使用方法,以获得最佳的使用准确性。
各种容积式仪器的国际标准(ISO 385,ISO 646,ISO 835,ISO 1042和ISO 4788)包括关于容量定义的条款;这些条款描述了足够详细的操作方法来定义容量而不含歧义。 ISO 4787:2010包含补充信息。
ISO 4787:2010中的程序适用于标称容量在0.1 ml至10 000 ml范围内的体积仪器。这些包括:单体积移液器(见ISO 648),无分舱;刻度测量移液器和稀释移液器,部分或完全细分(见ISO 835);滴定管(见ISO 385);容量瓶(见ISO 1042);和刻度量筒(见ISO 4788)。不建议对容量低于0.1 ml的容积式仪器(如微型玻璃器皿)进行测试。
ISO 4787:2010不具体针对ISO 3507中规定的测径计。但是,对于测量玻璃器皿的体积规定的程序,大多数也可以用于校准计数器
ISO 4787:2010 provides methods for the testing, calibration and use of volumetric instruments made from glass in order to obtain the best accuracy in use.
The International Standards for the individual volumetric instruments (ISO 385, ISO 646, ISO 835, ISO 1042 and ISO 4788) include clauses on the definition of capacity; these clauses describe the method of manipulation in sufficient detail to define the capacity without ambiguity. ISO 4787:2010 contains supplementary information.
The procedures in ISO 4787:2010 are applicable to volumetric instruments with nominal capacities in the range of 0,1 ml to 10 000 ml. These include: single-volume pipettes (see ISO 648) without subdivisions; graduated measuring pipettes and dilution pipettes, with partial or complete subdivisions (see ISO 835); burettes (see ISO 385); volumetric flasks (see ISO 1042); and graduated measuring cylinders (see ISO 4788). The procedures are not recommended for testing of volumetric instruments with capacities below 0,1 ml such as micro-glassware.
ISO 4787:2010 does not deal specifically with pyknometers as specified in ISO 3507. However, the procedures specified for the determination of volume of glassware can, for the most part, also be followed for the calibration of pyknometers.