7.1.2 The multilaboratory (between-laboratory) standard
deviation has been found to be 16 min for the initial time of
setting throughout the range of 49 to 207 min, and 43 min for
the final time of setting throughout the range of 185 to 312 min.
Therefore, results of two properly conducted tests from two
different laboratories on Vicat initial time of setting of similar
pastes should not differ from each other by more than 45 min,
and on Vicat final time of setting of similar pastes should not
differ from each other by more than 122 min.