[yaacovk]

Hello.
i found a bottle of Compard R09 One Shot.
this bottle was not opened at all but i know that he is old (between 4-5 years).
is this R09 still relevant to use it?
how do i know what is the time created? (Is it mentioned anywhere on the bottle?)

regards.

Yaacov.

[titrisol]

R09 is a good developer for films ISO 200 or less. Rollei/Compard claims it is the same as AGFA Rodinal
It should have a very long life, especially if it has some sediment at bottom.

R09 is always used 1 shot, and it is used in 1+25, 1+50 or 1+100 dilutions. Each dilution produces different results.

[disconnekt]

Since it's been unopened this whole time, it will still be fine to use once you open it. Even though it's a clone of Rodinal, it should still last a good amount of time once open