This is a discussion on How Seriously Are Fellow Preppers Taking This Coronavirus in North America? within the General Talk forums, part of the General Discussion category; We have a trip to Ireland in June... still going....
We have a trip to Ireland in June... still going.
"Erosion of our rights just takes a few good men doing nothing"
Who is John Galt?
Liquid bleach is mostly water and is about useless after a year. Pool shock can be corrosive. I store mine in glass canning jars with tightly sealed plastic lids. Pool shock (sodium hypochlorite) comes in different strengths so find your formula for mixing on line but you must take into account the strength of the chemical.
The solid is calcium hypochlorite. Sodium hypochlorite (solid) is unstable....perchlorates are worse, they explode!
.........at the hardware store, I picked up some 13.3 oz, 52% chlorine HTH, pool shock packets today.....
So in a roundabout way........
# grams calcium hypochlorite = (desired chlorine mg/L x # gallons to be treated gal x 3.785 L/gal)/1,000 mg/g x %chlorine in HTH solid/100%
# grams calcium hypochlorite = (desired chlorine g/L X liters to be treated L )/ (% chlorine in HTH solid / 100%)
# milligrams calcium hypochlorite = (desired chlorine mg/mL X mL-liters to be treated mL )/ (% chlorine in HTH solid / 100%)
5% chlorine = 50,000mg/L = 50g/L = 50mg/mL
1 oz = 28.35 grams 1 gal = 3785 mL = 3.785 L
The 13.3 oz ,52% Chlorine, HTH pool shock bags give: 5.2 6.5 and 4.9 % chlorine diluted to 1-gal 3-L and 4-L , respectively. Easy to mix up a gallon or 3-4 liters of "bleach". Good disinfectant at ~5-6% chlorine
To treat water for drinking you want 7 ppm chlorine.
1ppm = 1mg/1000g 1mg/1000g X 1000g/L = 1mg/L 7 X 1 mg/L X 3.785L/gal = 26.5 mg/gal eg 7ppm chlorine
5% chlorine = 50 mg chlorine/mL
20 "drops" ~= 1-mL so for 1-mL 5% chlorine..... 50 mg chlorine/mL X 1-mL/20 drops = 2.5 mg chlorine/drop
26.5 mg chlorine/ (2.5mg chlorine/drop) = 10.6 drops eg of 5% chlorine bleach added to 1-gal water to give 7ppm chlorine
Some small plastic vials would be handy so you could have portions pre-weighed. Scribe the vials at a known volume then just add water to get 5% chlorine solutions.
Last edited by Mad Trapper; 02-24-2020 at 11:31 PM.
Thank you for the correction Mad Trapper. The old brain ain’t what it used to be. My memory is getting terrible. One of the side effects of getting old!
Science(!) for the win Mad Trapper, great post.
A couple simple solutions for disinfecting skin (not eyes and not for potable water) and surfaces, using the 68-73% calcium hypochlorite (pool shock variety):
0.25 teaspoon (2.8 grams) HTH/Calcium Hypochlorite/pool shock in 1 gallon of water = ~500 ppm chlorine solution
2.5 teaspoons (28 grams) HTH/Calcium Hypochlorite/pool shock in 1 gallon of water = ~5,000 ppm chlorine solution
500 ppm solution for hand hygiene/skin decontamination (short term, will damage skin if used continually), and 5,000 ppm for counter tops, door knobs, toilets, floors, etc.
Stolen from these docs (with just liter to gallon conversion):