Are these ok to use at home in small quantities, and can I find instructions to mix for 2L at a time (and fill the concentrate bottles with gas or marbles)? I would buy Kodak or Fuji final rinse, as it is cheap and readily available.

http://www.uniquephoto.com/product/c...-4x10l-140180/
http://www.uniquephoto.com/chemistry...-2x10l-p140308
http://www.uniquephoto.com/chemistry...l-4x8l-1292a32