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Seriously ... what is it? The Sodium quantity is not assigned much in the way of brewing, but because I provide "Alkalinity" as a calculated value, the value for "Sodium" can be influential. And if it is, it really illustrates how useless "Hardness" is ... it will fall apart! And in extreme...

Yeap. I'd go along with @foxy but I'm not convinced there will be no implications (steeping dark grains separately or only for "n" minutes at the end of the mash), but there shouldn't be. Otherwise, "Bicarbonate of Soda" is most certainly a better choice than "chalk" or (gawd forbid) "Baking...

What is it?

That's why I push my "Defuddler"! You don't need "Hardness", you don't want "Hardness" at all! Here you've got two measurements in two very different arcane units, and they're not the same numbers ... that is far from surprising. The components are all low, the differences are insignificant...

Hoy! Don't mis-quote me. That's naughty!

Ha! One of the links above (for Io-Star) has the following: Sodium Percarbonate, Peracetic Acid. Well known brewery cleaners. The "Per" means it's linked with "Hydrogen Peroxide"! Though I wouldn't have thought "Percarbonate" would have generated enough hydrogen peroxide to be very effective...

I never realised there was an issue knowing the concentration to use? But there are plenty of links referring to it as a no-rinse sanitiser. One mention I looked at said: Humm, it's perhaps one of those "user to verify for self" mixes. Nothing unusual, I stick bleach in the same category. I...

Videne is an iodine based antiseptic. The bugs it's killing die whether they're on your skin or fermenter! Fivestar (makers of "Starsan") make a product "Io-star"; similar to Videne. See https://en.wikipedia.org/wiki/Iodophor I'm slightly cautious of it, because I believe (most likely wrongly)...

@aero-spaced-out: I think @AnimatedGIF is backing off, But I can't see why? £300 is a scandalous amount, even with regulator and cylinder included. There's also what he pointed out ... you'd already cast your eye over Kegland Mk4 Beverage N2 / Mixed Gas Regulator, which at £44.50 is more sane...

Outrageous! That's 5x more than I coughed up for an Oxygen cylinder which I thought was scandalous. But I think I've eliminated myself from having any "real use" opinion of mixed gas! (Blah! sick... ... although I will drink the Guinness 0% cans which do have gas "widgets"). [EDIT: You are...

"Gas hose" (the talk was all beer-line before that). "5/8 male" and "BSP" (a common thread diameter for compressed gas cylinders - i.e. even higher pressure than liquid CO2). "Duotight or JG fitting to connect 8mm push fit hose to 5/8 male" (that's enough; he might have had much to do with gas...

Then don't mention "gas hose"! Your focus does jump about a bit and we could imagine some "alternative" horrific scenarios from what you were asking.

Gas hose? 5/8 inch male (thread, what thread)? 8mm pushfit? This is adding up to something potentially very scary. No wonder @RoomWithABrew asked "Why?". Ah, @MCRBrew has a less pessimistic idea of what's being attempted! Still (a person like me has undying pessimism) there's no mention of...

Thanks! Sorry, I guess it wasn't you? I've had a hunt about but can't find the post now, but I did come across this: The Fluid Flow Dynamics Behind The Gravity Defying Bubbles In Guinness Doesn't mention the role CO2 may (or doesn't) play ... so is different to what I originally saw. But it's...

Well, N2 is not absorbing so fast as CO2 yet both are trying to attain equilibrium. Hang-on ... head's over-heating ... need ice ...

That's ... remarkable? (Can't wait for @MashBag to see it).

Eh? I'm not going to argue 'cos the Maths is going to get excruciating. Two gases trying to equalise in proportion in both liquid and headspace but the gases having different rates of absorption, and … argg!!!😵‍💫 It's not worth it. Best advice I can give is … don't do it: Use the same gas or...

Malt-Miller (not renowned for being "cheap) sell it for £65 (incl.) but with the CO2 nut and no hose (but I've said I don't entirely agree with flexible "hoses" connecting to cylinders). The regulator gauge suggests it's up to it (3000PSI is as high as I've seen for "normal" compressed gas...

It certainly is! £108 (incl. VAT)! Hang on, I've got it … nope, it's not April the first either.

The dilution is documented as 10ml in 5L, or 1ml in 0.5L ... a 0.2% solution. If you stick to the directions (uh?), which you should. 0.5L (1ml neat Chemsan) has been diluted with 23L wort. Put like that it puts the risk to yourself as insignificant. The most poisonous substance is isopropanol...