Abstract: A seal pickup station for supplying a plurality of seals to a position where the seals may be picked up by a gas exchange head. The station comprises a supply roll of seals adhesively attached to a carrier sheet, and a pickup block having a channel through which the seals can be transported on the carrier sheet. The station further includes a sensor to detect the presence of a seal, a take-up reel to collect the carrier sheet, and a pressure roller mounted in the pickup block to maintain tension on the carrier sheet as seals are removed therefrom.

Abstract: An apparatus for exchanging a first gas contained in a sealed container for a second gas. The apparatus comprises a vacuum chamber for receiving the container and for maintaining a controlled pressure about the container, a gas exchange head for exchanging gas in the container while maintaining a seal between the container and the chamber, and a vacuum source coupled to the gas exchange head and to the vacuum chamber for evacuating the first gas from the container and air from the chamber. The apparatus further has a gas source for supplying the second gas, the gas source being coupled to the gas exchange head for supplying the second gas to the container, and a sensor for monitoring the pressure in the container during gas exchange.