Consists of new corrugated cuttings having liners of either test liner or kraft. Treated medium or liners, insoluble adhesives, butt rolls, slabbed or hogged medium, are not acceptable in this grade.

Prohibitive materials none permitted
Outthrows plus prohibitives may not exceed 2%

PS 16 Mixed kraft cuttings
Consists of new brown kraft cuttings, sheets and bag scrap free of stitched paper.

Prohibitive materials none permitted
Outthrows plus prohibitives may not exceed 1%

EN 643 European system equivalents

Unused board and shavings of corrugated material
Unused boxes, sheets and shavings of corrugated board, with liners of kraft and/or testliner.

Non-paper components max. 0.25 %
Total unwanted material max. 0.5 %

Unused corrugated kraft
Unused boxes, sheets and shavings of corrugated board, with kraft liners only, the fluting made from chemical or Chemo Thermo Mechanical Pulp (CTMP.)

Non-paper components max. 0.25 %
Total unwanted material max. 0.5 %