The old Ospho does not turn the metal black.....  I bought new and it definitely does... Jim Gano

Interesting, I've just used some Ospho that is about 6 years old, maybe 7 and it did its job. Guess the shelf life is between 6 & 9 years. *RUDY & JILL SECHEZ* *BRINEY BUG-a 34' Sail-Assisted Trawler * 850-832-7748 Sanford FL TRAWLER TRAINING and ANCHORING CONSULTANTS ANCHORING-"A Ground Tackler's Apprentice"- E-Book or Hard Copy On Sun, Nov 10, 2019 at 12:31 PM Jim Gano via Trawlers-and-Trawlering < trawlers@lists.trawlering.com> wrote: > The old Ospho does not turn the metal black..... I bought new and it > definitely does... > > Jim Gano > > _______________________________________________ > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > > To unsubscribe or modify your subscription options (get password, change > email address, etc) go to: > http://lists.trawlering.com/mailman/listinfo/trawlers_lists.trawlering.com > Trawlers & Trawlering and T&T are trademarks of Water World > Productions. Unauthorized use is prohibited. >

Rudy, I did some reading up on the topic.... I read that it should be stable for years if stored at room temperature.. but storing in elevated temperatures can be a problem..  mine was stored in a relatively warm location... Jim Gano >  

We store our Ospho in the galley where temps are governed by whatever Mother Nature provides, except in winter when we run a heater. Summer, though, can be in the 90's. where the Ospho is stored. Maybe others will share their success with different time frames. *RUDY & JILL SECHEZ* *BRINEY BUG-a 34' Sail-Assisted Trawler * 850-832-7748 Sanford FL TRAWLER TRAINING and ANCHORING CONSULTANTS ANCHORING-"A Ground Tackler's Apprentice"- E-Book or Hard Copy