checkCIF procedure

PLAT063

 Alert for crystals with at least one dimension probably too large for the  
 homogeneous part of the X-ray beam when used for datacollection using  
 crystal monochromated radiation. An exception will be datacollection using 
 a beta-filter and a sufficiently large collimator. 
 See also: C.H.Gorbitz (1999), Acta Cryst. B55, 1090-1098.