This 125mL narrow-mouth bottle is made from Teflon® FEP with a Tefzel® ETFE screw closure and has a particle level of less than 20 particles per mL at 0.3µm and greater. Metals certified to (µg/L) ppb levels <0.20 Hg <0.5 Be <1.0 As Cd Pb <2.0 Sb Se <5.0 Ag Co Cr Cu Mn Th V <10 Ba Ni Zn <50 Mg <75 Al <100 Ca Fe K Na. Each bottle is double bagged under Class 10 laminar flow hoods inside a Class 100 clean room. Excellent for storing high-purity chemicals. Product includes a certificate of quality that assures the product has been tested and accepted in accordance with specifications. Non-sterile. WARNING! Do not use Nalgene® bottles carboys or other containers under pressure or vacuum. The application of pressure or vacuum to products not designed for such use may result in product failure damage to property or personal injury. Material: Teflon® FEP with Tefzel® ETFE screw closure. Capacity: 125mL (4 ounce). Closure size: 24mm. 1/Pack. Nalgene® #: 381600-0004.