Vial, 40mL, 28 x 95mm, 24-414 Thread, with Red Pressure Relief Cap. Reaction vials are perfect for use in heated reactions. Supplied complete with a special pressure relief open top cap. Packed 100 per box.• Supplied complete with a special open top cap which prevents the pressure in the vial from exceeding 150 psig. • Made from 33 expansion borosilicate glass which conforms to ASTM E-438 Type 1-Class A, USP Type 1 and ISO 3585. The high resistance to thermal shock along with its maximum chemical resistance makes this the glass of choice for reaction vials along with most all laboratory glassware.• Packaged in a SBS coated white tray complete with SBS partition. Boxes are marked with alpha-numeric coordinates for fast and easy vial identification.PLEASE NOTE: VIALS AND CAPS ARE NOT AVAILABLE SEPERATE. MUST BE PURCHASED COMPLETE.