This hat features the essential skills any organic chemist, student or expert, will use when performing a reaction. Color-coded graphics make it easy to explain what is happening: From left to right, 1) setting up a reaction, 2) monitoring the progress of a reaction with thin-layer chromatography (TLC), 3) performing a workup to extract some of the byproducts, & 4) purifying the crude material using column chromatography to yield a pure product. A classic & comfortable way to show off your chemistry pride outdoors or in the lab! A perfect gift for any chemistry graduate, BA, BS, MS, or PhD! Dad hats aren’t just for dads. This one’s got a low profile with an adjustable strap & curved visor. 100% chino cotton twill Green Camo color is 35% chino cotton twill, 65% polyester Unstructured, 6-panel, low-profile 6 embroidered eyelets 3 (7.6 cm) crown Adjustable strap with antique buckle Head circumference: 20 -21 (50.8 cm-53.3 cm) Blank product sourced from Vietnam or Bangladesh Organic Chemistry Laboratory Hat - Chemical Reactions, Synthesis, Purification