Substrate Backer XLSubstrate Backer XL Double side black and white measurement backing according to ISO: 13655 Size: 279x 449 mm (effective 279 x 430mm) (Approx 11" x 17") Specification: White Backing Area According to ISO: 13655, white backing should have a diffuse reflecting surface. Typical ChromaChecker QC batch production measurement: Opacity 100% (99,3% single page) [expected value >99%}] FLuorescence = 0,0 [expected 0,0] L*= 94,6 [requirement: L* shall not exceed
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