The following tools and materials are required for checking ethanol concentrations: a hydrometer, graduated cylinder, large pipette, forceps, China red wax markers for labeling, replacement lids, 70% ethanol, 95% ethanol, and a waste ethanol container. All supplies are available in the MVZ Herp Lab.
Fill two one-gallon jars with 70% and 95% ethanol, respectively. Label an additional empty jar with “working ethanol”, which will serve as the container for waste ethanol when working with jars with concentrations above 70%. Working ethanol is collected in jugs in the Herp lab and is
later recycled.