Shorthand Systems for Expressing Residue Limits and Measured Values
In many of the recent Cleaning Memos, I have referred to cleaning validation residue limits using my shorthand system of L0, L1, L2, L3, L4a, L4b and L4c. The reason for doing this was to avoid possible confusion by use of terms like “maximum acceptable carryover” (MAC), “surface area limit” (SAL), “acceptable residue level” (ARL), […]
