Slap Test?
- Thread starter M118LR
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deac45
Blackhawk
No clue but I'm guessing if you have to slap the can to get it out, don't drink it.
It's a bit more, but we do have folks here that never did who desperately raise questions on folks that actually had to do. It's just a simple slap Test to tell you if the canned water in a raft is potable. If it failed the test would you still drink it in a raft on the Pacific if you had nothing else? Or would you drink salt water? 
There's a time frame on how long it takes for drinking salt water to kill you. Can't remember the numbers, but it ain't that long.
Know little of Army canned stuff, many here would, hint. But found a can of pound cake in the back of a Guard truck & my VN vet bud about tore my arm of grabbing it. Told me stories of it, how it was the most valuable c-rat of all & he loved it. I said, well here man, but would you give me a peice of it. Hev did, but dang it was a small one. It was good.
Know little of Army canned stuff, many here would, hint. But found a can of pound cake in the back of a Guard truck & my VN vet bud about tore my arm of grabbing it. Told me stories of it, how it was the most valuable c-rat of all & he loved it. I said, well here man, but would you give me a peice of it. Hev did, but dang it was a small one. It was good.
It's a bit more, but we do have folks here that never did who desperately raise questions on folks that actually had to do. It's just a simple slap Test to tell you if the canned water in a raft is potable. If it failed the test would you still drink it in a raft on the Pacific if you had nothing else? Or would you drink salt water?
OK . . . and what, exactly, is the test? :unsure:
Yup, that is the test. Can actually be a life or death situation. But their are folks that will cast dispersions on folks trying to give you the actual answers to such questions. But until you find yourself in such a circumstance, while really gives a dam?
Better ask Wikipedia, if I give you the answer I'll be labeled as a SEAL, Astronaut, MI6 Double 00 operative by folks on this forum. Beat you to the punch! You know who you are..
Sorry if that didn't answer your almost question. But since your life may not depend on actually performing a Slap Test, how relevant is it really?
Or better yet ask XUSNORDIE,.
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Busterswoodshop
Hunter
We didn't carry canned water because of the weight.
We carried dehydrated water.
Each can would make 16 ounces .
All you had to do was add a pint of water to it .
We carried dehydrated water.
Each can would make 16 ounces .
All you had to do was add a pint of water to it .
How silly. Now a tablet or two that could make unpotable water potable, that may be worth it's weight? You really didn't notice that 16 ounces of water makes a pint?
Survival rafts have canned water that may have been canned before WWII. How do you know if that can of water has been compromised? Even if it is compromised, how much sea water can you drink if your Power Cruiser loses its engine and you are adrift? Better hope you registered a plan with the Coast Guard and that they are coming to save your civilian jargon? Or do you carry a stainless steel canteen with accommodations to distill salt water into potable water. A day cruise can turn into a life or death struggle with merely the loss of propulsion. Clear enough, or do I need to reword it? My Bad.
The "slap test" usually refers to the O'Brien's Test, a physical exam maneuver doctors use to check for SLAP (Superior Labrum Anterior and Posterior) tears in the shoulder. It tests for shoulder labrum tears or bicipital issues by analyzing pain while resisting downward pressure on the arm in different rotations.
Also, lead was used in the can making process up until 1995. So I would not eat anything that was acid based in a can older than that.
Also, lead was used in the can making process up until 1995. So I would not eat anything that was acid based in a can older than that.
Okay, here you go, why slap a can of water to find out if it's still good.
https://share.google/aimode/dckLYNN4o8gsJIR1O
https://share.google/aimode/dckLYNN4o8gsJIR1O
Most of what I converse about is pertinent, you just have to have been in the desperate situation when it became relevant. Hopefully most folks don't ever get that experience.
Edit There is a reason why Uncle Sam sent me to Arctic Survival Training, Deep Water Environment Survival Training, Jungle Environment Survival Training, and Survival Evasion Resistance & Escape Training. Hopefully there isn't a single civilian in America that needs to use such training. But occasionally I let slip with what procedures are recommended if you find yourself in one of those adverse environments. Not to mention that Professionally I was expected to retrieve folks that had such training ahead of time when they errored. Even more complicated. JMHO YMMV.
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Guess it's my bad for assuming that folks took it as common knowledge. In the World I lived in, in the past, everyone had such training and things of that nature were taken for granted. Perhaps it is I that shouldn't assume that everyone comprehends that of which I speak so lightly of?
It's sort of like taking it for granted that folks living in ranch style houses that commonly experience hurricanes have a miners ax in the the attic. Only those similarly equipped have lived when I snatched the from up on the roof! Add a day/night flare to your kit. Makes things easier for folks in the help. JMHO YMMV.
Just ask Gilligan what can happen on a “three hour cruise”
A better “slap test” in a life or death situation might be slapping the guy holding the can of water so that you can grab the can and drink it immediately.
Neon Vernon
Single-Sixer
I'm just happy that there are men standing in the breach willing to slap those cans...to slap the cans that poor hapless civilians couldn't...because they can't understand the highly specialized lexicon required for can slappin'.
Let me see if I understand this. I am at sea, out in the middle of nowhere, I am in need of water. There is a can of water available. Now, if I 'slap' it and it sounds 'hollow' I don't drink it and drink the salt water (actually better off drinking nothing rather than drinking salt water) OR I can drink the none salt water from the hollow sounding can and perhaps last a bit longer. Really tough decision
xTopGun
Buckeye
I'm thinking that the poster drank a whole lot of something that they should have used the SLAP test on before ingesting . . . . . 
Busterswoodshop
Hunter
That's the thing.
You are not carrying water . It has been dehydrated.
Dehydrated water doesn't weigh anything.
Neon Vernon
Single-Sixer
If you're going to the trouble of carrying dehydrated water, why not make it worthwhile and carry something like dehydrated bourbon?
RugerForMe
Blackhawk
The Slap Test
You hold the bottom of the can loosely in one hand and slap the top opening with your palm.
If the slap produces a solid "knocking" sound, the can is supposedly airtight and the water is still pure. If it sounds hollow or sloshy, the seal may have been compromised.
You hold the bottom of the can loosely in one hand and slap the top opening with your palm.
If the slap produces a solid "knocking" sound, the can is supposedly airtight and the water is still pure. If it sounds hollow or sloshy, the seal may have been compromised.
Yaworski
Hawkeye
Just ask Gilligan what can happen on a “three hour cruise”
You get to spend a few years hanging out with Dawn Wells.
Neon Vernon
Single-Sixer
Ginger and Mary Ann are the main reason that the Professor never bothered fixing that hole in the boat...or, "what happens in the Professor's hut stays in the hut".
