got some chemicals given too me

[harleymike]

got a bunch of kent marine chemicals given too me. They are all unopened bottles. All are 1 gallon jugs.
Don't know how old they are. Withen a few years.
Do they expire and I listed them. Not sure of there uses. Or if they are worth bothering with.
Thanks for the help in advance.

1x 1 gallon jug Tech m
1x 1 gallon jug Essential Ellements
3x 1 gallon jugsTech CB Part B
3x 1 gallon jugs Tech CB Part A

 

[CRJ]

id like to know aswell, i got a bunch of bottles in a trade, and wont risk it unless i know they are OK

 

[Salty Cracker]

Someone posted this kind of question a while ago, I'm pretty sure some chemicals really have expiry dates and/or shelf life.  I wish I had more info...