I recently (last week) opened a "reserved" set of Tetenal (JOBO) RA-4 Chemicals - Half-full bottles opened on 4 September 2002 and preserved with my dwindling supply of "Protectan" spray; stored at ambient darkroom temperature. All chemicals are *fine*. Test strips (ColorStar type) indicated *very little* sensitivity or color balance shift.

I *really* like the Tetenal chemicals - for both their longevity and results.