Ink-jet derlin refill&vacuum machine This derlin refills and vacuums HP 23/41/78 type of inkjet cartridge. Derlin Machines are used for the purpose of refilling & vacuuming ink through the nozzles of the cartridge Derlin Machines are not only used for refill machines but also for refilling/vacuuming by hand Derlin Machines are more durable than the plastic refill & vacuum clips, because of their mecanism and raw material