A cupholder, which is mountable to a wall of a basket of a shopping cart, comprises a continuous wire having two lowermost portions, between and to which the outer mounting plate is mounted, two intermediate portions, which define a cup-supporting level and on which a cup-supporting plate is seated, and an uppermost portion, which is shaped to embrace a cup being held by the cupholder. The present apparatus includes a dosing system for injecting an inert gas, typically nitrogen in liquid form, into the head space of each container to enhance the integrity and rigidity of the package, and to improve the freshness and flavor of the container’s contents. The block of data can be tested for these conditions and flags set once per block or once per image. The database system also includes a means to detect a logical page index pair having a logical page number and a physical page location that are not referencing a same record, and another means to search for a free page map entry that references the physical page address of the record referenced by the logical page index pair. 015 wt % P in the lead-free solder, adding the master alloy into the lead-free solder with the percentage of P less than 0.