Kodak sells ECN and ECP kits to make the official chemistry ro process motion picture film. These kits are sold for make 100l but can be fractioned. Kodak does not give a figure for the storage of concentrated products but they have been stored for several months without problems.
Kokak’s ECN-2 kit
Kodak’s ECP-2E kit
Bellini Foto et JOBO proposent des kits ECN-2 dimensionnés pour le développement à la main.
Bellini’s ECN-2 kit (→ 1l)
JOBO’s ECN2 kit (→ 2,5l)
There are also kits intended for processing photo negatives knows as C41 kits allowing to process motion picture color negatives even if it isn’t the manufacturers recommended process.
ADOX’s C41 kit (→ 1l)
ARS imago C41 kit (→ 1l)
Bellini’s C41 kit (→ 1l)
Calbe C41 kit (→ minilab)
Cinestill’s C41 kit (→ 2,5l/5l/minilab)
Fuji’s C41 kit (→ minilab)
JOBO’s C41 kit (→ 2,5l)
K2 Photo Systems C41 K2 powder kit (→ 1l/2l)
Rollei’s C41 kit (→ 1l/5l)
and probably others…
You can also use the developer of the ECN and the ECP followed by a more practical photo BLIX (one single bath for bleaching and fixer) and more “ecological“ than bleaching with ferrocyanide for example.
