Test report No. 383266 dated 26 May 2021 Page 6 of 6 CYAN SEETHROUGH SUBSTRATE Pre-radiation Post-radiation Difference L* 8,91 9,13 ∆L* 0,22 a* -0,34 -0,9 ∆a* -0,56 b* -9,52 -8,99 ∆b* 0,53 ∆E* 0,80 CLEAR CHROMO SUBSTRATE Pre-radiation Post-radiation Difference L* 24,82 23,28 ∆L* -1,54 a* -0,37 -0,64 ∆a* -0,27 b* -7,89 -7,2 ∆b* 0,69 ∆E* 1,71 CLEAR OPALESCENT SUBSTRATE Pre-radiation Post-radiation Difference L* 59,75 57,72 ∆L* -2,03 a* -1,09 -1,28 ∆a* -0,19 b* -0,85 4,01 ∆b* 4,86 ∆E* 5,27 CLEAR SEETHROUGH SUBSTRATE Pre-radiation Post-radiation Difference L* 12,21 12,91 ∆L* 0,70 a* 0,13 0,04 ∆a* -0,09 b* -3,08 -2,86 ∆b* 0,22 ∆E* 0,74
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