anyone know AGFA G388c Fixer

Is there anyone know the AGFA G388c Fixer? I cannot find any information about it and i got 2x15L concentrate of this Fixer. It seems that this fixer looks like still sealed. But before i open it i want to know a bit more about that.

This week i got hundres of chemicals and papers from a photographer which close his darkroom..

Likely a rapid fixer concentrate. (Used for graphic films.)

Should be oke for Paper and Film too, right?

It likely is an acid one and that could be troublesome with colour materials, but this is the b&w forum anyway.