Drying solvents while taking care of purity I need to dry some solvents like $\text{MeOH, EtOH, and  DMSO} $ and I have to take care of purity of the solvents. These solvents are HPLC grade.

I am interested in freezing point and boiling point of these solvents  with maximum error of $ \pm  0.5  C$, hence, I do not prefer to add silica gel (or other dehydrating agent) in the flask containing solvent. 

What are other ways to dry solvents without putting something in them.
There is actually a book on preparing laboratory chemicals you can look up:


  "Purification of Laboratory Chemicals" by WLF Armarego and CLL Chai


However, given that all the chemicals you want to dry are extremely hygroscopic, I'm not sure how long they would stay super dry for calibration purposes (and I'm not sure you need super dry solvents for calibration either). If you need it to last, you may need a large dry box.