After the above two tests have been performed successively, the mean value of the variation in transmission , measured on the three samples according to the procedure described in Appendix 2 to this annex shall not exceed 0.010 (∆tm &lt; = 0.010).
After the above two tests have been performed successively, the mean value of the variation in transmission , measured on the three samples according to the procedure described in Appendix 2 to this annex shall not exceed 0.010 (∆tm &lt; = 0.010).