This feature reduces handling and simplifies preparing and storing trays. Ready to use from the package, trays and lids are packaged separately. The well dimensions on all types of Robbins trays allow visualization of the entire bottom surface area under 100 x magnification. All styles of typing trays have the same outside dimensions and are designed to fit the holders used in the specialized equipment found in tissue typing laboratories. Spacing between wells matches that used in all Robbins multiple syringe dispensers and automated serum dispensers.
Stainless steel typing tray freezer racks for upright or chest freezers are also available.
The unique requirements of these applications has led to a series of special purpose microtrays with slightly modified well shapes, volumes and surface treatments. All special purpose microtrays are manufactured to the same standards and have the same dimensions and well spacing as typing trays. Robbins serum tubes are specially designed without rims, eliminating the need to remove the rims or staggering the tubes to fit into dispensing racks when using multiple syringe dispensers. In addition, the hinge used on tubes with attached caps allows the cap to be removed by hand if necessary. Holes are precisely spaced for use with Robbins multiple syringe dispensers.