Does anyone have an idea - or an idea how i can find out about it - how chlorine solution (used as desinfection agent) will affect slings, both short term and long term.

Google is just tring to sell me chlorine pills to disinfect my pool...

And just to give you the background why i am asking (no, i am not trying to booty some slings from the site of a climbing accident, where the rescue folks had to disinfect some wounds on the site):

Its actually for those big, bulky industrial slings (the fat, heavy, colored things with a big WLL 1000kg written on them) and it is an industrial application, but the materials should be the same, so i thought i just ask here, if anyone has an idea how to find out more.

qwert

This was discussed in the US caving community a few years back when white nose syndrome was discovered.

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon. I tested a piece of 1" tubular soaked in Clorox brand bleach. I let the sample sit out 24 hours to dry and then I pull tested the piece. There was almost no noticeable strength loss. I think the piece failed at within 4% of what the control failed at.


According to the website below, nylon has "fair" resistance to chlorine water.

http://www.coleparmer.com/Chemical-Resistance

If I remember correctly, PMI has published research showing that ropes can be disinfected once with chlorine without a significant impact on strength(I think it was -5%), but the damage is cumulative with repeated exposure.

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon.

And just to give you the background why i am asking....Its actually for those big, bulky industrial slings....qwert

Just curious, doesn't this show a 4% reduction in strength? Congruent with what was said here?


And then you contradicted this same statement here....


So conclusively--Chlorine seems to weaken Nylon.

Does anyone have an idea - or an idea how i can find out about it - how chlorine solution (used as desinfection agent) will affect slings, both short term and long term.

Sure, a 4% drop would show a 4% reduction in strength. But 4% of 22kN is an extremely negligible value. So yes, it reduces the strength, but for the short term, it does not reduce it enough to matter.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware. The ratio I use is about: 2 oz of bleach to 5 gallons of water and a 20 minute wet soak. Then a hot water rinse for metal or just air dry for plastic.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

The food preparation industry often uses 1 tablespoon bleach to 1 gallon of water to sanitize surfaces and glassware. I think that gives 200 ppm.

I cannot comment on long-term, but for short-term, chlorine bleach does not seem to affect nylon.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

lol, my bad. 1kN is a negligible value.

No need. It's fully explained in Papazian and on multiple home-brew forums.

I've got nothing on tap at the moment due to the hot weather (ale yeast goes crazy) and being busy climbing. But next up is a British Ale and then an Oatmeal Stout. After that, an Anchor Porter clone. So, if you're ever in Connecticut.....

Can't believe I'm feeding the troll, but if you ever really need the difference between 21kN and 22kN you're going to have much bigger problems.

If you know that chlorine breaks down the integrity of Nylon, and with a noticeable amount in one application, why would you use it?

I've bookmarked this answer in case I ever do some home brewing. I would of never thought to look on RC.com for this specific bit of information.

It is a good answer, but not the only answer. I am also a homebrewer, but have never used chlorine as a sanitizer.

I don't know about how chlorine bleach effects the strength of nylon. But, as a home brewer, I often use a weak chlorine bleach solution to sanitize my brewing hardware.

Wow!!!!
Sorry no one caught the sarcasm in my posts.

I guess I'm the only one here who finds it comical that advise is being given about home brewing and cleaning on a rock climbing forum and the question posed was the effects on chlorine on slings/soft goods.

Beer and water are almost the same (at least in america), so its OK.