From your link:
Nutritional per 100ml diluted 1:10 Energy (k joules) 124kj, Energy (k calories) 29kcal, Protein Nil, Total Carbohydrate 7.2g, Fat Nil, Sodium Trace.
So, if it's 100 ml, diluted 1:10, then it's 90 ml water (zero calories) and 10 ml cordial (29 calories).
If 10 ml cordial = 29 calories, then 35 ml = about 105 calories
Your cordial is mostly sugar, which isn't very good for a restricted calorie diet.
It's very easy to make lower calorie (or zero calorie) infused water yourself: https://www.google.com/search?source....0.1-qNO-3lQ4c