First fume hoods were wooden and glass structures in early 1900s. Modern designs use epoxy powder-coated steel and flame-retardant plastics since 1970s. Fume hoods typically enclose six sides with movable sash windows. Most common dimensions are 1000-2000mm width, 700-900mm depth, 1900-2700mm height
Aqua regia is a mixture of nitric and hydrochloric acids in 1:3 ratio. Freshly prepared aqua regia is colorless, turning yellow, orange or red. It dissolves noble metals like gold and platinum
Pipette is a laboratory tool for measuring and dispensing liquid volumes. First pipettes were made of glass, including Pasteur pipettes. First micropipette patented by Dr. Heinrich Schnitger in 1957. Adjustable micropipette invented at University of Wisconsin-Madison in 1972
Colorless liquid with anesthetic odor. Boiling point 94.3°F, melting point -177.3°F. Less dense than water, floats on it. Flash point -49°F. Vapor pressure 442 mmHg at 68°F
Clear, colorless liquid with strong vinegar-like odor. Boiling point 244°F, melting point 61.9°F. Density 1.051 g/cm³ at 68°F, denser than water. Miscible with water, alcohol, and glycerrin
Anyone transporting dangerous goods must have proper training and follow regulations. Sendout staff, transportors, and recipients of dangerous goods need training. Training is mandatory for both Category A and Category B infectious substances