The Weight of a Gallon of Saltwater - DSP 112

Something in the world of floating have you stumped?

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Show Highlights

When Graham and Ashkahn get to definitively answer a question, it’s like Christmas. Birds sing and the guys bust out their “Answering a question definitively” dance, which has the added side effect of better crop yields during the coming harvest. It’s an exciting time.

There’s a very straightforward mathematical equation for measuring the weight of salt water based on specific gravity, which is excellent. And useful!

Also, whoever wrote this question needs to contact Graham and Ashkahn ASAP!

Listen to Just the Audio

Transcription of this episode… (in case you prefer reading)

Graham: Today’s question is, “how much does one gallon of Epsom salt saturated water weight? And, can I ever speak to you about an idea that I think would revolutionize the industry if you could help me to dream it possible?”

Ashkahn: That was part of the question?

Graham: Yeah. You wanna just do the first part first or-

Ashkahn: I guess so. Is that where the question ends or do they go into what the idea is?

Graham: No, they just want to know if they can speak to us about their idea.

Ashkahn: Oh, man, okay.

Graham: So, I guess the answer to that is yeah.

Ashkahn: Totally, yeah.

Graham: Definitely, yes. We love hearing ideas.

Ashkahn: I’m excited now. I wish they’d have written the whole thing in there.

Graham: I mean, it could revolutionize the industry.

Ashkahn: I can see how they don’t want us just broadcasting that out there.

Graham: Which I would have because obviously I’ll just read whatever’s in front of me.

Ashkahn: So, yeah, whoever this is, reach out. Get in touch.

Graham: Yeah man. Shoot us another question.

Ashkahn: Yeah, we’ll say it on the podcast. We’ll tell everybody your idea.

Graham: Unless you don’t want us to. In that case, we definitely won’t share it. So, the first part though, how much does one gallon of Epsom salt saturated water weigh? It’s not too hard to figure out.

Ashkahn: Yeah. It’s more than a gallon of water weighs.

Graham: And there you have it. You heard it from us.

Ashkahn: Okay. So, if you guys have other questions, you want to-

Graham: So, fortunately, the conversion with specific gravity of figuring out the weight of something is not the hardest thing in the world. It’s actually pretty simple. Just multiplication problem of you take the specific gravity and multiply it by, say the weight of water, which is 8.344 pounds.

Ashkahn: Per gallon.

Graham: Yeah, yeah, yeah. Per gallon. So, at 1.25 specific gravity, that’s gonna end up being 10.43 pounds per gallon, and around 1.3 specific gravity it’s gonna be about 10.85 pounds per gallon. And keep in mind, this is gonna vary a little bit. Not only on the specific gravity but on the actual temperature of the solution and on the pressure. But that shouldn’t change it too much.

Ashkahn: Those are marginal.

Graham: Yeah. So, just like the specific gravity is 1.25-1.3 it means that the weight of the gallon of salt water is going to be about 25%-30% heavier than a gallon of regular water.

Ashkahn: Okay. Yeah, that’s-

Graham: And send in that idea!

Ashkahn: Back to the important part of your question.

Graham: And pretty clear cut.

Ashkahn: Right.

Graham: Definitely feel free to run a little science experiment yourselves and prove us right or wrong on that.

Ashkahn: This is one of those rare times we actually know-

Graham: We actually know the answer and it’s concrete.

Ashkahn: Yeah.

Graham: We’re just gonna make this a really short episode. So, if you have any other questions for us, send them to floattanksolutions.com/podcast.