The Grampus 30PCS microscope slide set includes 30 prepared slides of a variety of plant specimens used in basic biology education. The samples are preserved in cedar wood oil and sealed with a coverslip to preserve specimens and prevent polution. Labeling on each slide identifies specimens. Slides are composed of optical glass for clear viewing and are 3 x 1 x 0.4 inches/75 x 25 x 1mm (H x W x D, where H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.) The set comes in a fitted case to prevent breakage and ease handling.