LONG NECK FLASK The extended neck is designed to accept a metal cap, plastic closure, foam plug, or cotton plug for cell culture applications. KIMAX flask has a thick-walled tubing neck with a plain fire-polished finish sealed to an Erlenmeyer-shaped body Autoclavable All flasks have durable white ceramic enamel scales to indicate approximate volumes at various levels Designed from ASTM Specification E1404, Type IV, Class I requirements Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements Capacity (mL) : 250 Graduation Range (mL) : 50 to 225 Subdivision (mL) : 25 Height (mm) : 142 Widest OD (mm) : 82 Cap Size & Neck OD (mm) : 38 Shelf-Pack Qty : 6 Case Qty : 24