salt/bicarb mouthwash

My dietitian told me 1+1 in a pint (circa 500ml) of water

I’m not sure it’s too critical. Anywhere between the two,  I’d say. That said, I did the same as Peter and never had any problems. It’s well worth it. 
Three years on and my mouth still flares up from time to time and I still mix up some of the good ole salt and bicarb solution to calm things down. 
Wishing you the best, M

It’s not critical, really. 
I made mine up fresh in a 200ml glass. One pinch of each. Couldn’t be bothered with weighing out to the gram. 

Hi As Daninsays it’s not critical I used to make it up a litre at a time but sometimes couldn’t be bothered and went down the glass sp with a pinch of salt and bi carb.l yiure using it to swill and swish your mouth. No need to be too technical..

Hazel