You should replace the DPD powder. Everything else should be fine -- but you might be low on some of the chemicals.

Complete info on the PS234 is available here:

http://poolsolutions.com/cart/ps234.php

but, you can only pre-order for the time being. But, there is a substantial discount for owners of existing kits. And, all the chemicals (except the DPD powder) keep well if stored well. The chemical numbers and labels have changed, but there's a cross-over table linked from the page above, so you'll know how to use up your existing chemicals.

Thx,

Ben
PoolDoc / PoolSolutions.com / PoolForum.com