trab f kunjett (ħġieġ ta  tip i) b tapp (lastku fluor resin laminated butyl) strixxa (aluminju) u għatu (aħdar polypropylene flip off) u 1 ml ta  solvent fi skartoċċ (ħġieġ ta  tip i) b tapp (fluor resin laminated chlorobutyl elastomer) strixxa (aluminju lacquered) u għatu (abjad polypropylene flip off)