Hypochlorous acid water generator, make you own disinfectant, question..?

April 20-2020 | Me Vanity question

[free_life]

I bought a hypochlorous acid water generator. To disinfect surfaces, food pretty much everything.

It makes 300ml in 8 minutes.

My question is how long is it good for as a disinfectant?

I thought I would make a few gallons of it (water and salt) and put it into spray bottles and give a couple of bottles to each of my family households to disinfect with. Is it still an effective disinfectant 2 days later, a week later, 2 weeks later...?

[Nifster]

Have you never heard of hot soapy water

[Karl Spooner]

I think you will find chlorine dioxide a better all around disinfectant for what you are trying to do. In a glass spray bottle it will last weeks in the fridge after it’s activated, and 3-4 days at normal temps. The neat thing about chlorine dioxide is that it will not oxidize or contaminate organic matter (food), yet it is 2.5 time more powerful than chlorine at killing pathogens.

A little demonstration of the killing power of hypochlorous acid vs chlorine dioxide at low concentrations: (Also it’s one of the reasons why I am a big fan of osone)

“An in vitro excystation method was used to evaluate oocysts’ viability and to determine the inactivation rates of hypochlorous acid at 2 ppm, chlorine dioxide at 1, 2, and 5 ppm, and ozone at the doses of 0.18, 0.24, 0.36, 0.48, and 1.44 mg/l.

By using hypochlorous acid, the maximum inactivation rate obtained was 49.04% after 120 min. Chlorine dioxide at 5 ppm inactivated 90.56% of oocysts after 90 min of contact. Ozone was the most effective product, rendering an inactivation of 100% with the concentration of 24 mg/l.”

https://link.springer.com/article/10.1007/s12010-008-8214-3

[ptsal]

Get Star-San
Be food safe clean

[ptsal]

Get Star-San
Be food safe clean

[lee martell]

Please don’t be offended but is this a real question? Why would someone go through what appears to be a Rube Goldberg type procedure when alternatives are now waiting on the shelf of any store? Perhaps you just enjoy working with chemicals and elements.

[onona]

You just keep buying from China pal.

[Brooklyn Attitude]

Using Chlorine dioxide to kill corona is like using a shotgun to kill a fly. That’s the stuff we used to disinfect areas contaminated with anthrax spores.

[trebb]

We use either a Clorox spray bleach product or rubbing alcohol on a spray bottle...

[mewzilla]

C diff, too.

[SheepWhisperer]

From Lowe’s...

Pool bleach (10% chlorine) $4/gallon
25 oz chemical resistant trigger spray bottle $4 each
Three drops dish soap

Add water to spray bottle
Add 4-tablespoons of 10% bleach
Add three drops soap
Seal, gently shake to mix and spray surfaces.

Always add water first, then bleach, then soap.

For one quart mason jar (32oz)...
Five tablespoons of 10% bleach and five drops soap.

For local travel wipes...
Take a extra mason jar, fill it with 10oz of diluted mixture. Roll up three microfiber towels (also available at Lowe’s). Insert the rolled towels in the jar and seal. They well absorb the solution. Bring an extra jar and an extra dry microfiber towel.
When leaving the store, grab a soaked towel, wipe down everything...hands, parcels, car door, phone, keys etc. Place used damp towel in the extra jar for later washing. Use dry towel to dry off hands. You’ll need to thoroughly wipe everything.

For spraying down parcels from Amazon etc...
Get one gallon pump sprayer. Mix 6.75oz of bleach (10%) and ten drops soap into one gallon of water. Seal, pump and saturate all sides of box. Allow to dry.

Makes solution which is 5% bleach, 5000 ppm

FWIW, 6000ppm is strong enough to kill blood born pathogens.
6360 ppm is what’s in the Lysol spray disinfectant.

Calculator here...
https://www.publichealthontario.ca/en/health-topics/environmental-occupational-health/water-quality/chlorine-dilution-calculator

One gallon of pool bleach is ten times more than the household bleach most sold at the grocery. Seal lid tightly when not in use. This method is a fraction of the cost of using regular bleach and the home improvement stores are and have been flush with supply, because nobody is aware of this use.

[moovova]

“No thanks, I’ll stick with Everclear.”

Worst. Drunk. Sick. Ever.

Don’t know how many virus cells I killed, but I’m sure I killed a LOT of brain cells.

[daniel1212]

That may help as regards what is best. I took a little liberty in the public interest of adding some color and making boundary lines visible in the table from https://www.journalofhospitalinfection.com/article/S0195-6701(20)30046-3/fulltext

Biocidal agent	Concentration	Virus	Strain / isolate	Exposure time	Reduction of viral infectivity (log10)	Reference
Ethanol	95%	SARS-CoV	Isolate FFM-1	30 s	≥ 5.5	[]
	85%	SARS-CoV	Isolate FFM-1	30 s	≥ 5.5	[]
	80%	SARS-CoV	Isolate FFM-1	30 s	≥ 4.3	[]
	80%	MERS-CoV	Strain EMC	30 s	> 4.0	[]
	78%	SARS-CoV	Isolate FFM-1	30 s	≥ 5.0	[]
	70%	MHV	Strains MHV-2 and MHV-N	10 min	> 3.9	[]
	70%	CCV	Strain I-71	10 min	> 3.3	[]
2-Propanol	100%	SARS-CoV	Isolate FFM-1	30 s	≥ 3.3	[]
	75%	SARS-CoV	Isolate FFM-1	30 s	≥ 4.0	[]
	75%	MERS-CoV	Strain EMC	30 s	≥ 4.0	[]
	70%	SARS-CoV	Isolate FFM-1	30 s	≥ 3.3	[]
	50%	MHV	Strains MHV-2 and MHV-N	10 min	> 3.7	[]
	50%	CCV	Strain I-71	10 min	> 3.7	[]
2-Propanol and 1-propanol	45% and 30%	SARS-CoV	Isolate FFM-1	30 s	≥ 4.3	[]
		SARS-CoV	Isolate FFM-1	30 s	≥ 2.8	[]
Benzalkonium chloride	0.2%	HCoV	ATCC VR-759 (strain OC43)	10 min	0.0	[]
	0.05%	MHV	Strains MHV-2 and MHV-N	10 min	> 3.7	[]
	0.05%	CCV	Strain I-71	10 min	> 3.7	[]
	0.00175%	CCV	Strain S378	3 d	3.0	[]
Didecyldimethyl ammonium chloride	0.0025%	CCV	Strain S378	3 d	> 4.0	[]
Chlorhexidine digluconate	0.02%	MHV	Strains MHV-2 and MHV-N	10 min	0.7–0.8	[]
	0.02%	CCV	Strain I-71	10 min	0.3	[]
Sodium hypochlorite	0.21%	MHV	Strain MHV-1	30 s	≥ 4.0	[]
	0.01%	MHV	Strains MHV-2 and MHV-N	10 min	2.3–2.8	[]
	0.01%	CCV	Strain I-71	10 min	1.1	[]
	0.001%	MHV	Strains MHV-2 and MHV-N	10 min	0.3–0.6	[]
	0.001%	CCV	Strain I-71	10 min	0.9	[]
Hydrogen peroxide	0.5%	HCoV	Strain 229E	1 min	> 4.0	[]
Formaldehyde	1%	SARS-CoV	Isolate FFM-1	2 min	> 3.0	[]
	0.7%	SARS-CoV	Isolate FFM-1	2 min	> 3.0	[]
	0.7%	MHV		10 min	> 3.5	[]
	0.7%	CCV	Strain I-71	10 min	> 3.7	[]
	0.009%	CCV		24 h	> 4.0	[]
Glutardialdehyde	2.5%	SARS-CoV	Hanoi strain	5 min	> 4.0	[]
	0.5%	SARS-CoV	Isolate FFM-1	2 min	> 4.0	[]
Povidone iodine	7.5%	MERS-CoV	Isolate HCoV-EMC/2012	15 s	4.6	[]
	4%	MERS-CoV	Isolate HCoV-EMC/2012	15 s	5.0	[]
	1%	SARS-CoV	Hanoi strain	1 min	> 4.0	[]
	1%	MERS-CoV	Isolate HCoV-EMC/2012	15 s	4.3	[]
	0.47%	SARS-CoV	Hanoi strain	1 min	3.8	[]
	0.25%	SARS-CoV	Hanoi strain	1 min	> 4.0	[]
	0.23%	SARS-CoV	Hanoi strain	1 min	> 4.0	[]
	0.23%	SARS-CoV	Isolate FFM-1	15 s	≥ 4.4	[]
	0.23%	MERS-CoV	Isolate HCoV-EMC/2012	15 s	≥ 4.4	[]

SARS = Severe Acute Respiratory Syndrome; MERS = Middle East Respiratory Syndrome; MHV = mouse hepatitis virus; CCV = canine coronavirus; HCoV = human coronavirus.

Copyright © 2020 Elsevier Inc. All rights reserved.

[LastDayz]

May explain why I’ve been having foggy brain lately ;^)

[LastDayz]

May be referencing CDS.

[Leep]

I have one of these.

[KTM rider]

"Citric acid? Sure... why not a little orange juice in your Covid-19-fighting tonic-and-gin?"

Believe it or mot , citric acid has some very interesting surfactant chemical properties. Another use is as a retarder for concrete that does not affect the strength.

[KTM rider]

It would be nice if there was a frequency of light or other form of energy emitter that could disintegrate virus and bacteria

[KTM rider]

I have been saying since the beginning of this that we should all be armed with spray bottles and go after it, not hunker down at home like a bunch of cowards

[dangus]

Yeah, I got my orange-scented citric-acid cleaner, Kaboom.