QUANTIFOIL® with circular holes is mainly used in cryo-EM. The roundness of the holes is advantageous with respect to the formation of an ice layer of constant thickness.
The QUANTIFOIL® types with small holes (e.g. 1.2 µm) were designed for magnifications around and higher 50.000x. At magnifications between 30.000x and 40.000x we recommend the QUANTIFOIL® types with 2 µm holes. Larger holes (e.g. 3.5 µm, 5 µm) are suitable at magnification around 20.000x.
The table below gives an overview of the available QUANTIFOIL® types with circular holes. Please be aware that the hole size and spacing might vary slightly from their nominal value, whereas the period is fix.
|QUANTIFOIL® type||Hole size in µm||Spacing in µm||Period in µm|