[Lone Wolff]

Well, I never had an issue with the instructions but I did have a problem with the caps for the test tubes never being tight enough. Every time I go to shake the tube for the Nitrate test for 60 seconds, it would always leak down the side.

So I finally got fed up and went to the hardware store and bought 3 rubber stoppers that fit down inside the tubes, not just capping over the outside.
Now when I have to shake the tubes, there's no mess.

If anyone else has that problem with their caps being so loose that they leak, try the rubber stoppers. They were only $.19 each at the local Ace Hardware.