Histology tissue embedding apparatus with adjustable trigger

A histology tissue embedding apparatus comprises a reservoir for an embedding medium and an outlet valve connected to the reservoir through which the embedding medium is dispensable. Trigger means (such as lever 8) are provided, which control the operation of the outlet valve, the trigger means having a rest position in which the outlet valve is closed, where the rest position of the trigger means is adjustable in relation to the outlet valve. One or more LED lights 40, 41 may be provided to illuminate both a working area and a cold area. Trimming means may be provided, which includes a trimming surface having a plurality of corrugations. A removable embedding medium waste receptacle (50, fig 10) may be provided, into which embedding medium may be directed by drainage means.