PS 23 Telephone directories
Consists of clean telephone directories printed for or by telephone directory publishers.
Prohibitive materials none permitted
Total outthrows may not exceed 1 /2 of 1 %
EN 643 European system equivalent
1.07.00 Telephone books
New and used telephone books, with unlimited content of pages coloured in the mass, with and without glue. Shavings allowed.
Non-paper components max. 0.5 %
Total unwanted material max. 1 %