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RE: Lab Readings in ug/L vs ppb

One is mass to volume the other is volume to volume
1ug/liter = 1ppb is approximately accurate assuming the material has the same density as water and you are at standard conditions.
-----Original Message-----
From: Donald Sutherland [mailto:donaldsutherland-iso14000@worldnet.att.net]
Sent: Thursday, February 13, 2003 12:45 PM
To: P2Tech Listservice
Subject: Lab Readings in ug/L vs ppb

Can someone tell me how these lab testing results translate into parts per billion (ppb)?
Thanks for your help.
Donald Sutherland
Eastern Range Detected Average
 2001 ND-1.45 ug/L 0.47 ug/L
2001 ND-1.56 ug/L 0.64 ug/L
2001 ND-2.38 ug/L 0.94 ug/L