What pH meter?

[rodo]

One other question the solutions it is sold with the 4 packets of each I'm assuming these are a one shot deal, use one pack and then throw it away, correct? Also it doesn't come with a storage solution does this model need one?

Unsure about the packets. The storage solution is potassium chloride. Here is a link to the place and page where I get my chemicals. I got the 16oz bottles of Ph4 and Ph7 buffers and a couple 4 oz bottles of the potassium chloride.

http://www.piwine.com/index.php?option=com_virtuemart&page=shop.browse&category_id=31&Itemid=82