Science Buddies: "Ask an Expert"

Please if anybody can help,I would sure appreciate it.My son is doing an experiment to find out if acids affect the rate of corrosion and a test tube is required.The directions give a certain size of tube but I cant find it anywhere except for online and it has to be turned in on Monday and we dont have enough time to order it.I have found a couple of stores that carry a size 15mmX100mm.The size in the directions state 25mmX150mm.Does it make that big of difference in the sizes? Thanks.

Hi,
The size of the testtube should not be a problem, as long as the rubber stopper fits the testtube snugly along with the thermometer. I hope this helps.
Good luck
Jay

Ok thank you so much! Hopefully,it wont have to be redone before the finalized project due date Dec 8th.