I have some info on batches and dates......

Quote Originally Posted by jeffman_53

I can......It's on the colored piece of paper (with the directions) inside the box. Upper left hand side is a batch number that would read something like....
Batch F4L-07. If the last two numbers end in 03 through 05, Spectrum labs will trade it. QF 4.0, ending in 06,07,08 are good and 4.2 ends in 08.