sieve tray
A bar tray is used to serve tea
supply tray is used in served for food and other food
It is a tray that you use when you dissect something.
as long there is a bread pan on top of the baking tray, yes bead can be baked on a baking tray
a dutch serving tray is used for serving food
A spotting tray is used for separating small things in science, they are flat with about 12 dips in the middle.
A cable tray is a rigid structure to support electric cables.
A surgical template is a clear tray that is used in the production of dentures. The tray is designed to receive an imprint of the dentures.
The jug of water is on the puja tray because it is there to be used for cleansing worshippers before worshipping
A cat will used the litter tray when ever it feels the need to, which is usually several times a day.
it would seem that this question refers to a medical tray, which is used in hospitals to carry surgical instruments.