Perform short-term general purpose laboratory and field applications with Thermo Scientificâ„¢ Nalgeneâ„¢ Wide-Mouth HDPE Economy Bottles with Closure. These light-duty translucent bottles are a lightweight version of the original Nalgene bottle, bulk-packed for ultimate economy. Thinner-walled and more flexible than the Nalgene Lab Quality Bottles, they feature a wide mouth for easy filling and offer excellent chemical resistance to most acids, bases and alcohols. br>