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As a minimum, labels contain the place and date of collection, and the identification of genus and species. On pinned insects, the labels are likewise pinned with the space left under the specimen on the same pin. [3] There are various ways to write the information on labels, but an ink that will not fade or come off in liquid is generally used.
A cover slip may be placed on top to protect the specimen and the microscope's objective and to keep the specimen still and pressed flat. This mounting can be successfully used for viewing specimens like pollen, feathers, hairs, etc. It is also used to examine particles caught in transparent membrane filters (e.g., in analysis of airborne dust).
Label accompanying a bird skin. Note that the locality, date, identity of the specimen and collection catalogue numbers are given on the securely attached label. Minimum data associated with zoological specimens is the place and date of collection, attached to the specimen by a label.
A label with collection information is glued on the bottom right corner. Dried: Small bryophytes (mosses, hepatics or liverworts, and hornworts) are dried and placed loosely in folded packets. The label is glued on the front of the packet and the packets are filed loosely in boxes, glued to sheets of mounting paper, or placed loosely in folders ...
To mount the specimen, a tiny amount of glue is placed on the tip and applied to the right side of the insect's thorax. [14] If appropriate the tip of the point may be bent at the necessary angle to hold the body of the specimen horizontal when the pin is vertical, with the long axis of the insect at right angles to the point.
A laboratory specimen is sometimes a biological specimen of a medical patient's tissue, fluids, or other samples used for laboratory analysis to assist in differential diagnosis or staging of a disease process. These specimens are often the most reliable method of diagnosis, depending on the ailment.