Comments about TEM grid storage boxes:
We offer two brands of TEM grid storage boxes, the SPI Supplies® Brand and the BEEM® Brand (Slide-A-Grid™/Twist-A-Grid™ and Dial-A-Grid™ styles respectively). Both brands of boxes were designed and engineered by professional TEM users with very definite ideas about the proper way to store and retrieve grids. Both are designed to hold standard grids of 3.05 mm diameter in the range of thicknesses which will fit into a typical TEM specimen stage.
There are three significant differences between these products: