Drier sizing

[gbnewre]

I am trying to figure out how to properly size a filter drier for a refrigerations system. I am looking to know how much desiccant is needed for several refrigerators that use small charges, 3 to 12 ounces R134a. Is there any easy way to figure out how much dessicant is actually needed for these systems? Thanks

[Peter_1]

The manufacturer mostly states in his manuals for what capacity its filters are designed.
If you had a very good vacuum, then the smallest one will do the job perfect.

[Magoo]

I agree with Peter 1, replace what was fitted originally, any thing bigger will act as a receiver and starve system and create issues in the off cycle, as in flooding evap., and create problems.