SPARE OXYGEN FILLED CYLINDER, 2LTR 330402

The catalogue name carries 1 specification — volume 2 L — and a bid against this code is a bid for exactly that.

It is one of 3 items in Portable Oxygen Apparatus (codes 330401–330403 among those listed here); the neighbouring codes are the same article in other sizes, materials or ratings, so a requisition often carries several of them together.

To buy it, post the code with the quantity in pieces, the vessel's port and its ETA; verified ship chandlers activated at that port price the line sealed, and you compare the bids side by side.