1 Stock number stamps contain movable bands with the numbers 0 - 9. 2  Choose between a sturdy metal core frame or sleek, economical plastic frame number stamp.
The channel has a large diameter of 0.8x1.1nm, and is non-selective for small ions. However, it has an upper exclusion size limit corresponding to molecular weights of about 600 Dalton of permeants. Because most metabolites have molecular weights lower than 600 Da and have been shown to pass through porin channels, porins are called general diffusion pores.
The conventional wide-channel Slider is heavier, and is therefore particularly suited for camera car work and second dolly or multiple camera applications. Both wide and narrow channels in 5-foot, 6-foot, or 8-foot lengths offer sliding Mitchell and junior mounting points along the channel for rigging convenience.