Crystal lattice plane spacings provide a good test of microscope stability and a figure of merit for resolved lattice resolution. At the same time, since lattice spacing is accurately known from X-ray measurements, it provides calibration in the upper range of magnification of the instrument.
Catalase crystals, 3.05mm grid AGS124Negatively stained catalase crystals.Average lead time: 28 daysPOA
Average lead time: 28 days- Plane spacing 1.0nm, Copper phthalocyanine, 3.05mm grid AGS136Copper phthalocyanine. Special prices valid while stocks last.Average lead time: 28 days
POA
Average lead time: 28 days 
Graphitised Carbon Black , 3.05mm grid Plane Spacing 0.34nm AGS140Graphitised carbon black.Average lead time: 28 daysPOA
Average lead time: 28 days
Oriented Gold Crystals Plane Spacing 0.204nm, 0.144nm and 0.102nm AGS135Orientated Gold crystals on 3.05mm grid.Average lead time: 90 daysPOA
Average lead time: 90 days
