Port connecting assemblies and arrangements

A multiple port connecting assembly comprising:

• a connector body including a first fluid passage extending from an adapter port to a first connector port, a second fluid passage extending from the adapter port to a second connector port, a first seat portion disposed between the first fluid passage and the second fluid passage, and a second seat portion disposed within the adapter port;
• a fluid isolation adapter removably assembled with the adapter port, the fluid isolation adapter including an adapter body defining a first end passage that connects with the first fluid passage at a first connection in the adapter port, a second end passage that connects with the second fluid passage at a second connection in the adapter port, a first seal portion sealing against the first seat portion to isolate the first connection from the second connection, and a second seal portion sealing against the second seat portion to seal the second connection against external leakage;
• a first tube extending from a distal end of the first end passage;
• and
• a second tube extending from a distal end of the second end passage;
• wherein the second tube surrounds and is concentric with the first tube.

A system for collecting a liquid sample, the system comprising:

• a connector body including a first fluid passage extending from an adapter port to a first connector port, a second fluid passage extending from the adapter port to a second connector port, a first seat portion disposed between the first fluid passage and the second fluid passage, and a second seat portion disposed within the adapter port;
• a fluid isolation adapter removably assembled with the adapter port, the fluid isolation adapter including an adapter body defining a first end passage that connects with the first fluid passage at a first connection in the adapter port, a second end passage that connects with the second fluid passage at a second connection in the adapter port, a first seal portion sealing against the first seat portion to isolate the first connection from the second connection, and a second seal portion sealing against the second seat portion to seal the second connection against external leakage;
• and
• a sample container, wherein a first tube extending from a distal end portion of the first end passage extends into the sample container to supply sample fluid to the sample container;
• wherein the second connector port comprises a vent port, and the second end passage is in fluid communication with the sample container to vent gas from the sample container to the vent port.