3143 Opacity (Paper Backing) 82 to 95% Price: $342.00

Participants receive two similar samples for testing. Each sample consists of ten pre-conditioned 4 1/4" x 5 1/2" sheets of either printing paper or newsprint. Measurements are made following TAPPI Method T519, using diffuse /0 degree geometry, illuminant C/2 degree and paper backing. 
Enroll at any time; your subscription will start with the next scheduled ship date and will include six (6) shipments. 
Testing conducted during January, March, May, July, September and November.