Gear Skeptic has a whole series on water purification that is extremely in depth. One portion discusses the "WAPI" extensively. He found that higher temps shortened the time needed to eliminate viruses, bacteria and protozoa. I think he posted the series 4 or 5 years ago. Virtually all of the series he has done is worth while.
You can't sterilise at boiling point 100°C/212°F, you can only disinfect it, some organism spores can survive boiling temperatures and reactivate once cooled down. Disinfection of water is achievable from 65°C and upwards but it's time dependent, as you demonstrate here. Instantaneous disinfection can be achieved around 80°C. But as most people don't carry a thermometer around with them, then boiling is an easy visual confirmation that a sufficient temperature for disinfection has been achieved.
Really informative video. I remember when I was told to boil for 2mins which was very much overkill. As I use a Primus multi fuel running Aspen4 the knack is turning the bottle over prior to a boil so the remaining fuel brings it to 100C. Nice to know if a bit early and the boil not quite achieved it should still be safe.
I've been subscribed for quite some time. What I appreciate the most about your work is that you know the science & Do the science. Thank you so Very much!
Thanks Ernie, with all the watermain leaks in Opelousas this device can be put to good use. Often the water coming from the tap is brown with sediment. Berkey filters have to be cleaned every two weeks.
Thanks Dr, Ernie for the review. Looks like a great way to extend the range of any fuel, even making alcohol stoves more viable for multiple day camping trips. Wonder how cooler water will hydrate my Mt. House Meals?
How many people boil water to purify it anyway? I think most filter, and boil for drinks. Still go to boil for a good cup of tea, Though this device is cheap enough to get anyway.
Have two, after Geakskeptic video from 3 years ago on water purification, boil vs pasteurization. th-cam.com/video/rIMeq0c7rJM/w-d-xo.html The fuel savings are greater in colder / windier conditions because as the water heats it is evaporating and radiating more so that last stage between pastuerisation to boiling is disproportionately more fuel consuming. Conditions specific but may half your fuel consumption to pasteurize.
I still think a small RO filter or a UF filter with a small solar powered water pump would be better for water purification. Pasteurizing water is a recipe for mycobacterial infections
So, this is just a camper's sous vide? 😆 Whilst I'm ok with pasteurizing my homebrew, out in the field, i think I'll carry on boiling the water! Still waiting for the day some genius invents dehydrated H₂O! 🤣
@waxler2 I'm just curious if you've researched into reverse osmosis filtration it's a literal molecular seive that can remove salt from ocean water it has no problem removing viruses bacteria or protozoa
@waxler2 there is small portable units and can be operated with an electric or hand pump to purify water enough for 10-50 people daily per single unit that it smaller than a 2l Pepsi bottle
@waxler2 it's more practical than boiling water twice daily, especially for trips over 1 week or more than 1 person it makes so much sense to be using filtration instead of boiling. Less fuel for water more for cooking
![ILLSLICK - KILLSHOT REMIX [FULL VERSION]](http://i.ytimg.com/vi/RIK8RrqIAzE/mqdefault.jpg)
I like that it’s accurate no matter what your elevation is, and no batteries required!
Gear Skeptic has a whole series on water purification that is extremely in depth. One portion discusses the "WAPI" extensively. He found that higher temps shortened the time needed to eliminate viruses, bacteria and protozoa. I think he posted the series 4 or 5 years ago. Virtually all of the series he has done is worth while.
3 years ago th-cam.com/video/rIMeq0c7rJM/w-d-xo.html
You can't sterilise at boiling point 100°C/212°F, you can only disinfect it, some organism spores can survive boiling temperatures and reactivate once cooled down.
Disinfection of water is achievable from 65°C and upwards but it's time dependent, as you demonstrate here. Instantaneous disinfection can be achieved around 80°C.
But as most people don't carry a thermometer around with them, then boiling is an easy visual confirmation that a sufficient temperature for disinfection has been achieved.
What organisns can survive boiling?
Really informative video. I remember when I was told to boil for 2mins which was very much overkill. As I use a Primus multi fuel running Aspen4 the knack is turning the bottle over prior to a boil so the remaining fuel brings it to 100C. Nice to know if a bit early and the boil not quite achieved it should still be safe.
I've been subscribed for quite some time. What I appreciate the most about your work is that you know the science & Do the science. Thank you so Very much!
I’d rather just boil it and not worry. And nothing extra needed. See the bubbles? Done.
Looking forward to watching all the videos you've made boiling water remade with this new device instead. 😛. You're gonna need a new playlist. lol
I saw this on gear skeptic years ago, you should check out his video.
Thanks Ernie, with all the watermain leaks in Opelousas this device can be put to good use. Often the water coming from the tap is brown with sediment. Berkey filters have to be cleaned every two weeks.
66°c for everyone else 😊
Thanks Dr, Ernie for the review. Looks like a great way to extend the range of any fuel, even making alcohol stoves more viable for multiple day camping trips. Wonder how cooler water will hydrate my Mt. House Meals?
How many people boil water to purify it anyway?
I think most filter, and boil for drinks. Still go to boil for a good cup of tea,
Though this device is cheap enough to get anyway.
Have two, after Geakskeptic video from 3 years ago on water purification, boil vs pasteurization. th-cam.com/video/rIMeq0c7rJM/w-d-xo.html
The fuel savings are greater in colder / windier conditions because as the water heats it is evaporating and radiating more so that last stage between pastuerisation to boiling is disproportionately more fuel consuming. Conditions specific but may half your fuel consumption to pasteurize.
Wish you'd put Celsius on screen for the rest of the world
I use a chlorine tab per 500ml and boil to be extra safe
I still think a small RO filter or a UF filter with a small solar powered water pump would be better for water purification. Pasteurizing water is a recipe for mycobacterial infections
So, this is just a camper's sous vide? 😆 Whilst I'm ok with pasteurizing my homebrew, out in the field, i think I'll carry on boiling the water! Still waiting for the day some genius invents dehydrated H₂O! 🤣
A filter setup is more reliable and efficient than relying on thermal purification of water
Most Filters are good for cysts and bacteria but don’t work as well for viruses. Pasteurization kills the viruses.
@waxler2 I'm just curious if you've researched into reverse osmosis filtration it's a literal molecular seive that can remove salt from ocean water it has no problem removing viruses bacteria or protozoa
@waxler2 there is small portable units and can be operated with an electric or hand pump to purify water enough for 10-50 people daily per single unit that it smaller than a 2l Pepsi bottle
Yes I’ve seen those. I think Katadyn makes or made one. I’m not going to take one of those backpacking or hiking.
@waxler2 it's more practical than boiling water twice daily, especially for trips over 1 week or more than 1 person it makes so much sense to be using filtration instead of boiling. Less fuel for water more for cooking