The simple measurement method of liquid sample in near-IR region

Since near-IR light is transmissive to glass, it is widely used as the quantitative and qualitative analysis method to measure powder sample in test tube or sample bottle. On the other hand, generally the liquid sample is measured in transmittance method using thin cell with 1-3 mm cell length. The commercial cell is too expensive to use as disposable, and it is difficult to clean the cell due to its thin cell length. In the measurement method by using hematocrit capillary cell, there were some problems that the cell cap cannot be used for strong smell sample such as fragrance, or high viscosity sample cannot be inserted to the cell.

In this note, Jasco introduces the simple measurement method by using the test tube with cell cap or easily washable laboratory dish, the portable type near-IR detected instrument VIR-9650 was used.