Infrared Spectrometer TJ270-30A TJ270-30B Infrared Spectrometer TJ270-30A TJ270-30B TJ270-30A is a new improved model from the base of TJ270 ... company, easy to operate and the software is convenient.TJ270-30A with perfect ability, widely used in oil industry, chemistry, medicine ... and school education.TJ270-30B is updated type from TJ270-30A, its scanning speed is about 30% faster than TJ270-30AData ...