BS ISO 4795-1997 实验室玻璃器皿.温度计球头玻璃

标准号：BS ISO 4795-1997
中文标准名称：实验室玻璃器皿.温度计球头玻璃
英文标准名称：Laboratory glassware - Glass for thermometer bulbs
标准类型：N64
发布日期：1997/4/15 12:00:00
实施日期：1997/4/15 12:00:00
中国标准分类号：N64
国际标准分类号：17.200.20;81.040.30
适用范围：This International Standard specifies the physical and chemical characteristics and the marking of thermometric glass and the test methods to be used for the selection of glass for the manufacture of the bulbs of liquid-in-glass thermometers. It is not applicable to the glass used in parts of the thermometer other than the bulb (e.g. the stem). However, the glass used for the other parts can be identical to that used for the bulb. The coefficient of linear thermal expansion of the bulb glass should not differ from that of the glass intended for the stem by more than 0,2 × 10 K