| 摘要 |
The present invention provides a process for measuring the NR spectrum of a sample using a demountable NIR transmission cell of pathlength of 2.5mm or less, said process comprising: (a) measuring the etalon fringes that arise when NIR light passes through the NIR cell in the absence of a liquid sample, (b) using this to calculate the pathlength of the NIR cell, (c) introducing the sample to be analysed in to the NIR cell, and (d) measuring the NIR spectrum of the sample. |
