36.2% Hydrochloric Acid (Muriatic) adjustments

[CCob]

I have recently become a proud new owner of a 1500 litre hot tub and also a new member to the forum. I have been investigating the Dichlor/Bleach method and getting various chemicals ready for my 1 month water change that is recommended for a new tub. I believe I can source everything needed, except the hydrochloric acid seems to be sold in 36.2% strength in the UK instead of 31.45% that the pool calculator's calculations are based on. Do I simply adjust the ml recommended by the calculator by a factor of 15% since 36.2 is 15% more than 31.45? In other words if the pool calculator recommended 100ml of hydrochloric acid at 31.45% would this be the equivalent of 85ml in a 36.2% strength solution?

Thanks

 

[needsajet]

Welcome to TFP! Good to have you here

Answer is yes, and/or select 34.6% in the drop down box which would be closer. Be sure your TA is set correctly in PoolMath when looking at the recommended acid addition.

 

[CCob]

Welcome to TFP! Good to have you here

Answer is yes, and/or select 34.6% in the drop down box which would be closer. Be sure your TA is set correctly in PoolMath when looking at the recommended acid addition.

Excellent, thank you needsajet. I certainly will be making sure the TA is correct first. Under the borates section it seems fixed at 31.45%, but as long as my adjustment calculations are correct that works for me.