Erlenmeyer flask, 50 ml, GL 25, with screw cap and 3 baffles

Erlenmeyer flask, 50 ml, thread GL 25, PBT screw cap with PTFE-coated seal (up to + 200°C) and 3 baffles, when placing in autoclave, screw the cap on loosely. Do not screw tight!, borosilicate glass 3.3