If you want pourer which gives you 25ml every time, then do not buy this. As the amount of liquid vary all the time. I have test it and the range was from 17ml to 46ml of liquid. You would be better to buy free flow pourer and use 25ml measures. I rate this product one star as I cannot rate it nil star. I bought other "automatic" pourers, but it seems to be same problem with them.
I returned this product back as defective, I didnt have to pay for return postage as seller provide pre-paid label. Got all money back. Five star for the seller's customer service