Chien grids

Chien grids were developed for the transfer of a number of individual sections or ribbons of sections on to another TEM grid. Two slits in the rim area of the grid can easily be bent at an angle with fine tweezers to make a handling tab to keep the remainder of the grid surface flat prior to picking up ribbons.

References:

Chien, K. Van de Velde, R. and Heusser, R. (1985). Simultaneous ultramicrotomy of multiple areas and examination of ribbons on one new grid. Proc 43rd Annual Meeting, Elec Micr Soc Amer, G.W. Bailey, ed, San Francisco Press, 460.
Galey, F.R. and Nilsson, S.E.G. (1966). A new method for transferring sections from the liquid surface of the trough through staining solutions to the supporting film of a grid. J Ultrastruct Res, 14, 405-410.