在某IEC六价铬测定标准中,在calibration章节中提到一种比色计:
8.1 Permanent calibration instruments
Colorimetric instruments designed specifically for hexavalent chromium detection at 540 nm may have a permanent calibration provided by the manufacturer and no further calibration is needed.
这里"permanent calibration instruments" 应该如何理解?有用过这种仪器的吗?
刘彦刚
第1楼2018/12/19
在某IEC六价铬测定标准中,在calibration章节中提到一种比色计:
8.1 Permanent calibration instruments
Colorimetric instruments designed specifically for hexavalent chromium detection at 540 nm may have a permanent calibration provided by the manufacturer and no further calibration is needed.
zgao
第2楼2018/12/19
谢谢,这里“不需要校准”(no further calibration is needed)是什么情况?
在某IEC六价铬测定标准中,在calibration章节中提到一种比色计:
8.1 Permanent calibration instruments
Colorimetric instruments designed specifically for hexavalent chromium detection at 540 nm may have a permanent calibration provided by the manufacturer and no further calibration is needed.