The Adox RA-4 Developer Kit for Color Paper contains everything you need to develop color paper: Developer and Bleachfix. You simply dilute each bath with water 1+4 and get developing.
Today all papers are RA-4 compatible. The content of this kit is enough to process 5 square meters of paperequal to 100 sheets of 20cmX25cm or 8″X10″.
Partial mixings are possible but once opened the remaining concentrate should be used within 2 months.
The working solution keeps up for one month in well closed and entirely filled bottles.
The developer must be used at 35°C +/-0,3°C. The bleachfix is more forgiving but should not go below 30°C.
The instructions are in German and English.