Each plate code consist of Library code and Plate number (three digits) 
Examples:
MA4/005 
TGBIBAC/073 
TA-1BS/127 
ESTSYN-L/004
Each clone code consist of Library code, Plate number (three digits) and Clone address (one letter and two digits) 
 Examples: 
MA4/005/H15 
TGBIBAC/073/K05 
TA-1BS/127/D24 
ESTSYN-L/004/O02
There are 9 216 double-gridded clones on filter with 3x3 pattern and 18 432 double-gridded clones on filter with 4x4 pattern.

filter map

filter map