What is the total organic carbon (TOC) limit for Purified Water and Water for Injection?
A. There is a “target limit response” of 500 ppb carbon The true limit is the response of the TOC measurement system to a 500 ppb sucrose solution, Rs, corrected for the response to reagent water, Rw. This is equal to Rs-Rw. The actual number will vary based upon your reference standard solution, your equipment, background carbon etc. You will determine compliance using the USP Reference Standards. back to top Q.
