I have been guzzling down the Robinsons peach barley water like nobodys business feeling great as i was getting loads of water in and thinking it was free....however ive just looked on the syn value online and im horrified! It says 1 syn per 100 ml. I just went into full on panic as the glass i have been having is 500ml so am i have 5 syns?? OR does it mean 1 syn per 100 ml of concentrate?? (There is 1L in the bottle). To make matters even more confusing, when i use the syn calculator it says its FREE?! Does anybody have an answer to this please? xx