... XO-1500,XO-1502 are universal types of spectrophotometer, mainly used for basic test of following field ... sanitation,drug analysis,education,scientific research etc..Such series spectrophotometers possess advantages of high accuracy,good ... Range325-1100nm200-1000nmSpectral Bandwidth2nm4nm4nm2nmOptical Path5~50mm5~100mmOptical SystemSingle beam of light,autocollimating optical system,1200line/mm ...