Two-chamber glass equipment ideal for a reaction scale of 0.1-1 mmol (total volume 20 mL), two Screw caps, two stabilizing PTFE discs (reusable). Ten single use silicone/PTFE seals (in combination with the stabilizing discs each seal allows for a maximum of 2 piercings using 21G/Ø0.80 mm syringes or smaller).