Bleach for running sterile rez?
- Thread starter .Smoke
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NanoGadget
Well-Known Member
You taught me this years ago when I first joined the site! Still use the technique to this day.. cheers!
GTConsulting
Member
FWIW, I did some research and decided to use DIY UC Roots. Basically got one of those hypochlorus acid electyrolysis spray bottles where you add salt water and the device electrolyzes it into concentrated UC roots solution. I worked out ~1g of table salt to 300ml of water = 0.03% solution (UC roots is 0.028% iirc). Nice and cheap. Plus, I can make a more concentrated solution for other cleaning tasks.
Alternative is to try using KCl to add K+ into the water instead of having excess Na+.
Alternative is to try using KCl to add K+ into the water instead of having excess Na+.
ÒÒlegilizeitÒÒ
Well-Known Member
Thanks for pointing this out to me for further research.
I do see some of the benefits of using bleach, like price and residual effect.
But, like I mentioned, this article seems to say effectiveness is not as good. It takes a lot more bleach (up to 120x more) to sterilize a rez as well as UC root.
"Hypochlorous acid (HOCL) is the most effective disinfectant in the chlorine family available in dilute solution. It is suggested that HOCL is 80 to 120 times more efficacious than sodium hypochlorite because HOCL has no charge and has a relatively low molecular weight it is better able than the other chlorine based disinfectants to penetrate the cell walls. It also reacts more rapidly than other chlorine-based disinfectants to oxidation reactions with organic matter, i.e. the critical components of microbial cells."
The science of chlorine-based disinfectant
When selecting the ideal cleanroom disinfectant there are many criteria to consider and a good understanding of the product characteristics is essential. Karen Rossington takes a look at the historic development and latest advancements in chlorine disinfection
Wastei
Well-Known Member
"When sodium hypochlorite dissolves in water, two substances form, which play a role in for oxidation and disinfection. These are hypochlorous acid (HOCl) and the less active hypochlorite ion (OCl-). The pH of the water determines how much hypochlorous acid is formed."Thanks for pointing this out to me for further research.
I do see some of the benefits of using bleach, like price and residual effect.
But, like I mentioned, this article seems to say effectiveness is not as good. It takes a lot more bleach (up to 120x more) to sterilize a rez as well as UC root.
"Hypochlorous acid (HOCL) is the most effective disinfectant in the chlorine family available in dilute solution. It is suggested that HOCL is 80 to 120 times more efficacious than sodium hypochlorite because HOCL has no charge and has a relatively low molecular weight it is better able than the other chlorine based disinfectants to penetrate the cell walls. It also reacts more rapidly than other chlorine-based disinfectants to oxidation reactions with organic matter, i.e. the critical components of microbial cells."
The science of chlorine-based disinfectant
When selecting the ideal cleanroom disinfectant there are many criteria to consider and a good understanding of the product characteristics is essential. Karen Rossington takes a look at the historic development and latest advancements in chlorine disinfectionwww.cleanroomtechnology.com
It's practically the same thing. UC Roots is snake oil. Prove me wrong. Cheers!
GTConsulting
Member
fwiw... take a look here.
Also, with commercial production of HOCL, NaCL solution is electrolyzed with a one-way membrane that separates the Na and OH so that only pure H+ and OCl- is left.
So from what I've seen, HOCL is technically supposed to be superior to plain bleach and making your own from electrolysis and perhaps the inclusion of some acid (ph down) may work but not as well.
Alas, you can get HOCL at 500ppm for about $45/gal. In comparison, UC Roots is 280ppm at ~$90/gal. Save ~75% by getting the 500ppm HOCL cleaning solution that's used in virus foggers.
Also, with commercial production of HOCL, NaCL solution is electrolyzed with a one-way membrane that separates the Na and OH so that only pure H+ and OCl- is left.
Electro-Chemical Activation
Electro-Chemical Activation (ECA) is the generation of safe, effective, environmentally friendly disinfectants and cleaners by passing ordinary water containing dissolved sodium chloride through an electrolytic cell.
www.aquaox.com
So from what I've seen, HOCL is technically supposed to be superior to plain bleach and making your own from electrolysis and perhaps the inclusion of some acid (ph down) may work but not as well.
Alas, you can get HOCL at 500ppm for about $45/gal. In comparison, UC Roots is 280ppm at ~$90/gal. Save ~75% by getting the 500ppm HOCL cleaning solution that's used in virus foggers.
cobshopgrow
Well-Known Member
there are tons of HOCL generators popping up in corona times.
i got one too, they basically work as long the usb port isnt broken, its cheap china stuff.
the selfamde hocl isnt as stable as the bottled stuff you can buy, but its still good to use for a few days and cost nothing to produce.
i would say plants take hocl better then bleach, i made some tests and didnt ran in to any problems, few ppm seems to be ok.
i got one too, they basically work as long the usb port isnt broken, its cheap china stuff.
the selfamde hocl isnt as stable as the bottled stuff you can buy, but its still good to use for a few days and cost nothing to produce.
i would say plants take hocl better then bleach, i made some tests and didnt ran in to any problems, few ppm seems to be ok.