Dumped last 6 batches of beer - Infected?

[Terpene]

Try iodophor, just for the hell of it.

I use a spray bottle of isopropyl alcohol. Remember, though, you have rinse it well or wait for it to completely evaporate.

Sounds like you're on the right track, though. Keep going, you'll find the culprit.

 

[Jayjay1976]

My setup has two 3-piece ball valves; I clean them by slowly cycling them from open to closed while recirculating pbw solution at 180f, ten times each valve. After several batches brewed following that routine I tore them down to inspect and they were both spotlessly clean.

 

[IslandLizard]

My setup has two 3-piece ball valves; I clean them by slowly cycling them from open to closed while recirculating pbw solution at 180f, ten times each valve. After several batches brewed following that routine I tore them down to inspect and they were both spotlessly clean.

That's sort of what I do and haven't found anything hiding in there either, when taken apart every 6-8 brews.

After the last rinse out, I leave them half open at a 45 degree angle to dry.

 

[Jayjay1976]

Leaving them half open @45 deg is a great idea!

 

[IslandLizard]

"For all applications allow to air dry, but surface must remain wet for at least 1 minute." I presume the air drying part is important, or else they wouldn't put it on the label?

I always understood not to let air dry: Surfaces remain sanitized as long as they remain wet with Starsan or covered with its foam. Once it dries the sanitizer isn't active anymore.

I've also read to assemble parts while wet with Starsan, like spigots, auto siphons, tubing to canes, etc. That's what I've always done and never had an unintentionally infected batch so far in 10 years of brewing. I still use the same vinyl racking hose. It's taken on a greenish tint over the years.

Now I've had some infected starters and infected experimental fermentations.

 

[NeverDie]

I always understood not to let air dry: Surfaces remain sanitized as long as they remain wet with Starsan or covered with its foam. Once it dries the sanitizer isn't active anymore.

I've also read to assemble parts while wet with Starsan, like spigots, auto siphons, tubing to canes, etc. That's what I've always done and never had an unintentionally infected batch so far in 10 years of brewing. I still use the same vinyl racking hose. It's taken on a greenish tint over the years.

Now I've had some infected starters and infected experimental fermentations.

Yes, I would think so. The quote is directly from the back of the bottle though.

I think probably rph_guy nailed it as just star san's poorly worded way of saying not to rinse it off or dry with a towel.