Robotic liquid handling system

A robotic liquid handling system, comprising:

• at least one robotic arm;
• a controller configured to control the robotic arm to position and operate the robotic arm in a workspace of the robotic liquid handling system;
• wherein
• the controller is configured to, as part of a liquid handling task, control the robotic arm to open a reagent reservoir, wherein the reagent reservoir has an opening which is sealed by a foil, wherein the controller is configured to control the robotic arm to open the foil by controlling the robotic arm to:
• (i) using a cutting tip, cut at least two flaps in the foil;
• and
• (ii) using a blunt protrusion, push the at least two flaps downwards into the reagent reservoir to clear at least part of the opening of the reagent reservoir, wherein
• the controller is configured to cut the at least two flaps in the foil by controlling the robotic arm to:
• with the cutting tip, pierce the foil at an entry position;
• and
• from the entry position, move the cutting tip laterally with the cutting tip inserted into the opening at a first depth past a height of the foil.