Hi,
I've bought several small bottles of perfume concentrate from the London branch of an international perfume house. Volume stated is 12ml. I split one of the bottles with a friend and ran out before I expected to - we were going to take 6ml each. So I measured the volume of the now empty bottle with water and a graduated medical grade syringe. The bottle cannot hold 12ml - it overflows. Allowing for displacement by the stopper, I reckon it holds 9.5ml. I am confident of the syringe, but have others of a different make, so I could test again to make sure. 2.5ml might not seem like much, but it's a large proportion of the overall volume I thought I was buying and these are expensive fragrances.
I'm wondering what I am entitled to ask for. I've used all of one bottle and most of another. So asking for my money back seems a bit much. But clearly I've got less for my money that I thought I was getting. Do I go back to the shop? Trading Standards? The question is not just what do I ask for myself, but what should the perfume house do in response. If it is not 12 ml, then they shouldn'[t continue to market it as 12ml.
They also do these in (allegedly) 30ml bottles. And I have one of these. I haven't used this one up, so can't measure the volume, but I am suspicious that I have been short-changed here as well.
Really appreciate any advice! Happy New Year to everyone 
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