I've been using 600ml plastic C*** bottles (think soda drink). 600ml is I think 20 floz or about a pint for CMS challenged. I'm hoping that those do not contaminate the chemicals. They can be squeezed to remove air before sealing. They only last a few times though as the distortion eventually breaks the material. I have been using these for developer (ID-11), fixer, stop. I did find a 'goopy' substance in the stop and had to filter it out with a coffee filter. Other than that it all seems to work.(posted 8169 days ago)