colored screw cap for brown reagent bottle 250 ml gl 45 simax yellow (plastic caps only) Reagent Bottles New Reagent Bottles with PBTB COMPANY : BOHEMIA Czech Republic REAGENT BOTTLES 250ML WITH PBTB RED SCREW CAP HEAT RESISTANT, GL 45,DIN,SILICON GASKET WITH PTFE COATED, RING ETFE, SIMAX, Cap is heat resistant up to 200 °C