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General Category => Equipment and Software => Topic started by: KCguy on April 23, 2019, 11:14:04 am

Title: auto siphon hose getting sticky after sitting too long in starsan?
Post by: KCguy on April 23, 2019, 11:14:04 am
I know everyone has only Game of Thrones on their mind, BUT if you can drag yourself away from that topic and answer a beer-related question:

Id read somewhere that plastics left too long in starsan solution are degraded.  I get a sticky feeling on my hands after handling plastics left overnight in some starsan solution;  my auto siphon hose is a particular culprit.  Not sure if I should reuse that hose or not....siphon assembly itself seems and feels fine.

Its just the hose that came with the auto siphon, and no idea if it was food-grade or not but I wonder if food-grade hose would handle the San better?  ANyone have experience in this? 
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: kramerog on April 23, 2019, 01:38:50 pm
I thought the sticky feeling is caused by a coating deposited by Starsan, not degradation.  I use both silicone and PVC food grade hoses.  They all get that sticky feeling if left long enough in the Starsan.
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: KCguy on April 23, 2019, 01:48:14 pm
I thought the sticky feeling is caused by a coating deposited by Starsan, not degradation.  I use both silicone and PVC food grade hoses.  They all get that sticky feeling if left long enough in the Starsan.

Oh, I could definitely be using the wrong word to describe the sticky feeling, it may not be degradation.  I cant remember exactly.  So you continue to use your hoses without any worries?  Good enough for me. 
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: denny on April 23, 2019, 02:31:26 pm
I thought the sticky feeling is caused by a coating deposited by Starsan, not degradation.  I use both silicone and PVC food grade hoses.  They all get that sticky feeling if left long enough in the Starsan.

Oh, I could definitely be using the wrong word to describe the sticky feeling, it may not be degradation.  I cant remember exactly.  So you continue to use your hoses without any worries?  Good enough for me.

Yeah, I get that sometimes, but after a rinse they're fine.
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: Robert on April 23, 2019, 02:36:55 pm
Star San seems to me to get stickier and stickier with time.  I mix it with distilled or RO water, keep it closed up, and keep it for a long time,  and it stays clear, pH remains unchanged, and (so we are assured) effectiveness remains unchanged.  But the stickiness, and I think aroma, increase.   I assume it's something to do with the surfactant carriers.  Like Denny,  I just rinse it off.
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: KCguy on April 23, 2019, 02:44:53 pm


Yeah, I get that sometimes, but after a rinse they're fine.

See , I shouldve mentioned that - I cant get the stickiness off. 
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: Robert on April 23, 2019, 03:13:39 pm
Tubing is cheap.  I suppose I'd replace it if in doubt.  If you can find a reference on Star San degrading plastic that would be interesting.

Oh, and I'd be remiss if I didn't take the opportunity to point out that this is just one more reason iodophor should be the sanitizer of choice,  with Star San best used as a quick acid rinse after alkaline cleaners and as a spray bottle sanitizer of last resort.   There, I feel better now.
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: denny on April 23, 2019, 03:25:23 pm
Tubing is cheap.  I suppose I'd replace it if in doubt.  If you can find a reference on Star San degrading plastic that would be interesting.

Oh, and I'd be remiss if I didn't take the opportunity to point out that this is just one more reason iodophor should be the sanitizer of choice,  with Star San best used as a quick acid rinse after alkaline cleaners and as a spray bottle sanitizer of last resort.   There, I feel better now.

Yeah, I've gone back to Iodophor as my main sanitizer.
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: narcout on April 29, 2019, 11:34:20 am
If you can find a reference on Star San degrading plastic that would be interesting.

The tech sheet says:

"It is not recommended to use STAR SAN HB on soft metals because of the acid nature of
this product."

https://www.fivestarchemicals.com/wp-content/uploads/Star-San-HB4.pdf

Not exactly on point but fairly close...
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: jeffy on April 29, 2019, 03:11:37 pm
Tubing is cheap.  I suppose I'd replace it if in doubt.  If you can find a reference on Star San degrading plastic that would be interesting.

Oh, and I'd be remiss if I didn't take the opportunity to point out that this is just one more reason iodophor should be the sanitizer of choice,  with Star San best used as a quick acid rinse after alkaline cleaners and as a spray bottle sanitizer of last resort.   There, I feel better now.

Yeah, I've gone back to Iodophor as my main sanitizer.
Me, too.  I buy it in the gallon size.
Title: Re: auto siphon hose getting sticky after sitting too long in starsan?
Post by: Robert on April 29, 2019, 03:15:41 pm
Tubing is cheap.  I suppose I'd replace it if in doubt.  If you can find a reference on Star San degrading plastic that would be interesting.

Oh, and I'd be remiss if I didn't take the opportunity to point out that this is just one more reason iodophor should be the sanitizer of choice,  with Star San best used as a quick acid rinse after alkaline cleaners and as a spray bottle sanitizer of last resort.   There, I feel better now.

Yeah, I've gone back to Iodophor as my main sanitizer.
Me, too.  I buy it in the gallon size.
I buy it buy the gallon too.  It's dirt cheap, but, conveniently, the gallon costs just enough to get free shipping from MoreBeer!  :)