btilley wrote:
Can anyone recommend a good home test kit to test for hardness?
I bought a $10 kit at Home Depot, but I got only two samples out of it,
and it didn't seem to be as precise as I would like.

Any suggestions?

Since you got the kit at Home Depot it must be a test for water
hardness.

The tests are available all over the internet. eBay is a good way to
go.
http://search.ebay.com/search/search...sop =1&fsoo=1

R