A CARTRIDGE

摘要

A cartridge is configured to be inserted into a meter, the cartridge comprises a housing having an aperture, and end face and a side wall; at least one testing member disposed within the housing; a removable seal; and a knob attached in a fixed positional relationship with the seal, wherein when the seal is in a sealed condition a part of the seal covers the aperture and is secured to the housing around the aperture so as to provide a moisture impermeable barrier and the knob is located adjacent the side wall of the housing.