mark_macdonald

<p>I bought a bottle of Blazinal back in 2012 from FilmPlus in Toronto, so it's about 3.5 years old now. Kept in the plastic bottle, which is now about 60% full. Marked "Made in Germany".</p> <p>Much to my dismay, it seems to have lost some of its potency. Either that or I botched the developing job. I followed the steps from the Massive Dev Chart fairly closely:</p> <ul> <li>1+25 dilution</li> <li>Ilford HP5+ 120 format, ISO 400</li> <li>Develop time 6:00</li> <li>Constant agitation during first minute, and for 15s every minute thereafter</li> </ul> <p>The resulting negatives were noticeably thin.</p> <p>Possible sources of error: I didn't shake the bottle of Blazinal before mixing my solution, so it might've lacked some of the separated solids. And the solution temp might've been somewhat hotter than 20°C (although if anything I'd expect that to over-develop, not under-).</p> <p>So... Keeping this stuff in a glass bottle is probably a good idea. And despite Rodinal's reputation for longevity, always run a test roll first. :)</p>