Check the listing for details. Discovery #Mindblown Microscope Set STEM Activity Slides Test Tubes Tools Pietri. Condition: Used, Made in China. Listed at 21.50 USD. Discovery #Mindblown Microscope Set. STEM activity for children or adults. Microscope does 100x 600x and 1200x magnification. It's metal with an LED light. Used, condition is good but missing some pieces. Microscope has been tested and works. Includes: Microscope, petri dish, shrimp hatchery, eosin dye (almost gone), sea salt bottle (missing lid and sea salt), gum media (some used), needle, plastic stirring rod, plastic scalpel, plastic tweezers, graduated cylinder, 2 collecting vials (one already has garlic in it), 7 slide covers, 5 glass covers, 6 slide labels, and 12 slides (5 blank, 7 prepared). Missing: Specimen slider, brine shrimp eggs, sea salt lid, sea salt, most of the eosin dye, and some gum media. Pet free and smoke free home.