Photometers and Spectrometers provide valuable information for qualification and quantification of compounds and physical properties in liquid process streams. Rawson/Industrial Controls can provide filter photometers for impurities in liquid streams like HCl in chlorine streams. We have Fourier transform infrared spectrometers (FTIRs) for critical analyses such as octane number for finished gasoline, HF, ASO and water in HF alkylation units, and many other characteristics, including density, boiling point, viscosity, and more.