Chuck,
I will give them (Aquachem) a call and see what they say. Maybe they will send some more for free or at least cheap. The whole kit is only $16. I bought 3 or 4 PH/OTO test kits last year at the end of the season when our local Wal-Mart had them on clearance for $1 each. I will probably upgrade to a Taylor test kit in the near future as it looks like I may be taking care of another pool in my local area and I would like to have the most accurate results as possible.

Thanks,
JD