This is a multi-part message in MIME format. - ------=_NextPart_000_02F7_01BCE475.F2413EC0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have a test kit that measures KH & PH. I have a book that keeps = referring to total hardness. How do I determine that? Heather - ------=_NextPart_000_02F7_01BCE475.F2413EC0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD W3 HTML//EN"> <HTML> <HEAD> <META content=3Dtext/html;charset=3Diso-8859-1 = http-equiv=3DContent-Type> <META content=3D'"MSHTML 4.71.1712.3"' name=3DGENERATOR> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT color=3D#000000 size=3D2>I have a test kit that measures KH = &=20 PH. I have a book that keeps referring to total hardness. = How do I=20 determine that?</FONT></DIV> <DIV><FONT color=3D#000000 size=3D2></FONT> </DIV> <DIV><FONT color=3D#000000 size=3D2>Heather</FONT></DIV></BODY></HTML> - ------=_NextPart_000_02F7_01BCE475.F2413EC0--