This Corning Pyrex square narrow-mouth milk dilution bottle has a borosilicate glass body, a black thermoset phenolic cap, and a white rubber liner. This milk dilution bottle is used to hold samples and for storage, mixing, and dilution sampling applications. The borosilicate glass body provides chemical, thermal expansion, shock, and heat resistance. Its square shape is used for space-efficient storage, and for applications that require stability and gripping ease. This lab bottle has a black thermoset phenolic seal-lined screw cap that secures contents to help prevent spills and evaporation. The white rubber cap liner provides resilience, moisture resistance, and low gas transmission. This lab bottle is autoclavable for applications that require sterilization. This bottle meets American Public Health Association (APHA) requirements for bottles used in the examination of dairy products. This bottle is suitable for use with sample dilution of water, wastewater, or dairy products, among other applications.Lab bottles are used to store, hold, and mix liquids, powders, and other substances in a wide variety of scientific industries. Lab bottles have a more pronounced neck and shoulder than jars. Lab bottles are manufactured with a combination of characteristics in order to meet the demands of particular applications, such as for solution dispensing, mixing, and weighing, and use in centrifuge operations. They come in many shapes for specific applications, with a variety of mouth or nozzle shapes and sizes for specific use. Lab bottles are made from materials, such as glass (borosilicate or soda-lime) and an array of plastics, which are selected for chemical and thermal expansion resistance, transparency, and their adaptability in a variety of applications. Lab bottle interiors, caps, and lids are often lined with a protective material. Caps and lids help seal bottles to prevent solutions from spilling. The capacity refers to the fluid amount held by a lab bottle, and is commonly measured in milliliters (mL) and liters (l), and sometimes in ounces (oz). Lab bottles are suitable for use in chemistry and biology applications, as well as in pharmaceutical and scientific testing.Corning manufactures consumable glass, ceramics, and plastic laboratory tools for life science research, industrial, and educational applications. The company, founded in 1908, is headquartered in New York, NY, and makes ISO-certified products.