Check the listing for details. Beaker Mugs, Borosilicate, (2) 500mL Capacity and (2) 250mL Capacity. Condition: New. Listed at 52.79 USD. Beaker Mugs, Borosilicate, (2) 500mL Capacity and (2) 250mL Capacity This is the perfect mug for a scientist, nerd, geek, teacher, parent, or gifted student... actually... pretty much everyone. When coffee or any other dark-colored drink is added, the graduations become even more visible. Whether you are enjoying a cup of espresso in the AM or some liquor on the rocks in the PM, you're going to be satisfied. (2) 500mL Capacity Mugs, (2) 250mL Capacity Mugs There are other beaker mugs. We tried them all. Some of them may even be. GASP, less expensive. But this is the one you want. It is lab quality (seriously) and will last. Note: Wash thoroughly before use Product Details BrandEISCOManufacturerEISCOProduct TypeScience GiftsMpnPHBKMSET4 Hand crafted thick, lab quality borosilicate 3.3 glassware. Note: Lab borosilicate glass is typically lightweight and thin, so it feels different than standard household glassware.Graduations measure up to 400mL, total volume of mug is 500mL (graduations and capacity are both approximate)Great gift for scientists and geeksBest version on the marketSet of 4 mugs: (2) 500mL and (2) 250mL Check out my other items. -Powered by