Am facing some challenges on running double beam uv/vis/nir spectrophotometer for solid thin films on glass. The sample is going to be used on window or solar cells. When shud I run autozero? (What shud be in the compatmentss). When should I run baseline correction?(what should be in the compatments?). What should be in the reference compatment when running the sample? Can you give reason for each response? Thanks for assist. Regards