Hydroxyl Number in Polyols
Hydroxyl Number in Polyols
2 PagesApplication Note: Hydroxyl Number in Polyols Process Analytical Systems PAGE 1 | www.guided-wave.com Experimental The NIR spectra of a group of different process polyether polyol samples were measured between 1000 and 1600 nm using a Guided Wave Model 412 NIR Spectrometer. Figure 1 shows the absor- bance spectra of some representative samples using an on-line process probe with a 1 cm pathlength. The hydroxyl number for these samples
