Diluting Phos Acid

[razz]

Anyone good at working out a dilution of 81% phosphoric acid to achieve a 3% solution in water ? :blink:
Would it be 2.7mm per litre ?

 

[Duff]

37ml in 1L of water.

Cheers.

 

[razz]

Thanks Duff, my thinking was 2.4 ml is 81% of 3 ml.

 

[AndrewQLD]

I use Phos acid as a sanitiser but I am not sure of the strength, but I dilute 20ml in 10 lt of water as per intstructions.

Cheers
Andrew

 

[johnno]

Hi razz,
there is a fair bit of discussion about this here as well.

http://www.aussiehomebrewer.com/forum/inde...Phosphoric+acid

cheers
johnno

 

[Screwtop]

Here's the formula: (Percentage required x Percentage Volume in ml)/Percent Solution = ml required per Percentage Volume in ml. Or (3% at 1L)/81% Solution = ml per L

(3%*1000)/81% = 37.03703704 ml in one litre

 

[razz]

Thanks Johnno, I did a search but came up with an hours reading. Screwtop well done, me understands plenty good now !