... drip chamber, demand regulator, liquid filter, hose, and intravenous infusion needle.Product property: Particulate pollution, sealing, bonding strength, filtration ... packing bag along the seal, take out infusion set, tighten the intravenous infusion needle, close the demand regulator, remove the ... exhaust air in the hose, insert intravenous infusion needle into the vein, adjust to the required flow ...