nephelometer
/nefɪˈlɒmɪtə(r)/noun
- an instrument for measuring the size and concentration of particles suspended in a liquid or gas, especially by means of the light they scatter能见度测定表, 浑浊度表; 悬浮体散射仪。
词源
late 19th cent.: from Greek nephelē 'cloud' + -METER.