Science Buddies: "Ask an Expert"

So, we went to do the Sports drink electrolyte challenge today, and we were going to do three tests. We have 8 solutions, Tap hater, distilled water, Gatorade, G2, Powerade, Powerade 0, Orange juice, and chocolate milk. I have a different straw/copper wire piece for each solution. As far as we could tell, out multi-meter was set up correctly. The first test we ran gave us some interesting results, but it looked like what I was expecting. After that, we tried to run a second est, and all we would get was a random number flash on the screen, then the multi-meter would reset itself to .10 if in milliamps, or 1.0 if in microamps. When i recorded the random number that flashed up, it wasn't anything anywhere near what it should be. I cant figure out anything we did wrong, and we are really confused. Help!!

We've checked all of our connections, and have cleaned the wires and straws multiple times.

Hi eklowe99,

There is a section called "How can I tell if I blew the fuse in my multimeter?" at the bottom of the Help page for this project:

https://www.sciencebuddies.org/science- ... shtml#help

Can you follow those steps to check if your multimeter is still working properly?

-Ben