Coplin Jar with Blood Smear Slides

A Coplin jar is a small glass or plastic container designed to hold microscope slides upright or grooved, so they can be submerged in stains and reagents during slide preparation. It is widely used in histology and cytology labs.

A Coplin jar is used to stain and process microscope slides — including blood smears — by immersing several slides at once in fixatives, stains, or rinses. It standardizes staining and saves reagent compared with dropping stain on each slide.

The icon shows a Coplin staining jar holding blood smear slides, a clean single-object graphic you can use to represent slide staining or histology steps in a scientific figure or protocol diagram.

Blood smear slides are typically air-dried, fixed with methanol, and then stained — often with a Romanowsky stain such as Giemsa or Wright stain — by immersing the slides in a Coplin jar of reagent before rinsing and drying.

Yes. The icon is fully editable in SciFig — recolor it, relabel the slides or jar, resize it, and export it as SVG or transparent PNG to drop into any protocol diagram, poster, or figure.

You can export the Coplin jar icon as an editable SVG for clean scaling in vector layouts, or as a transparent PNG to place over any background in slides, posters, and graphical abstracts.