Distilled water?

[prh129]

I should add that the reason you use distilled water is that it is pure water so that when you dilute your pool sample, it will not have any chlorine (or other chimicals for that matter) in it to throw off the measurement.

Peter

[Bowlin]

Easy enough to just go out and buy some distilled water cause I'd have no clue how to catch it.

[prh129]

If you never saw a "still", check out the TV show MASH - they have one in the Swamp.