ISO 8655-7:2005规定了活塞式容积装置的测量误差的光度和滴定度。这些测试适用于完整的系统，包括基本设备和选择与设备一起使用的所有部件，一次性或可重复使用的，通过交付过程参与测量。 这些非重量测试方法可以应用于:供应商质量保证的帮助;作为用户的常规质量保证和日常校准;并作为常规和后修复测试。 ISO 8655-7:2005中描述的方法不适用于ISO 8655-6中规定的重量测量参考测试方法的替代方案，该方法仅适用于供应商声明或独立的合格认证的基础。 注1:ISO 8655-2至ISO 8655-5中规定了活塞式容积式设备的计量要求，特别是最大允许误差。 注2:对于符合性声明和认证的一致性测试或型式试验，请参见ISO 8655-6中的重量参考试验方法

ISO 8655-7:2005 specifies the photometric and titrimetric determination of errors of measurement of piston-operated volumetric apparatus. The tests are applicable to complete systems comprising the basic apparatus and all parts selected for use with the apparatus, disposable or reusable, involved in the measurement by delivery process. These non-gravimetric test methods can be applied: as aids to quality assurance by the supplier; as routine quality assurance and routine calibrations by the user; and as routine and post-repair testing. The methods described in ISO 8655-7:2005 are not applicable as alternatives to the gravimetric reference test methods specified in ISO 8655-6, which gives the only method suitable as a basis for supplier's declarations or independent certification of conformity. NOTE 1 Metrological requirements for piston-operated volumetric apparatus, especially maximum permissible errors, are specified in ISO 8655-2 to ISO 8655-5. NOTE 2 For conformity tests or type tests for declaration and certification of conformity, see the gravimetric reference test methods in ISO 8655-6.