Email exchange of a vendor and a glass jar manufacturer >Dear merchant, >Kindly check attached photos. When the mason jar is empty, the weight is 460g and when fill up with water, weight is 1106g So the capacity of the big mason jar is around 23oz. We only have two size mason jars, so when you mention 24oz, we thought it's one because the capacity is very similar. Pls check with customer whether this the mason jar is ok. Dear factory, I am not sure what you are saying. 24 ounces is a Capacity, Not Weight. The large Mason jars samples you sent hold 20 ounces of Liquid. Not 24. ounces. I measured the capacity myself. We need to increase the capacity . Make it 24 ounces. I need you to confirm with an Engineer that the Cost will be the same for a 24 oz. size as you quoted to us. This customer has 10,000 stores, there cannot be any mistakes. Otherwise you have wasted everyone's time. I need an answer today, >Dear merchant, >I also measure the capacity myself. When empty, weight is 460g, when fill up with water, weight is 1106g. So capacity is (1106-460)/28.5=22.67 ounces Pls make sure when you measure the capacity, the mason jar is fill up. >Is your customer very strict on the capacity and can not accept 1oz difference? If so, we can make the mason jar a little bigger but need to open new mold and the cost will add around 0.03 #facepalm