A vessel for conveying a precursor-containing fluid stream from a precursor material contained within the vessel using a carrier gas, the vessel comprising: an interior volume segmented into an upper volume and a lower volume, the lower volume containing substantially all of the precursor material; a lid that defines at least a portion of the upper volume; a sidewall having an upper end comprising an upper lip and an upper opening, wherein at least a portion of the upper end contacts the lid; a base that defines a portion of the lower volume, the base including an interior bottom surface that defines a lower end of the lower volume, the interior bottom surface having an interior bottom surface shape; a separator located at the upper end of the sidewall, interposed between the lid and the sidewall, and spanning the upper opening, the separator being formed of a porous material and having a first aperture formed therein; an inlet that passes through the lid and is in fluid communication with the interior volume, the inlet having a body that extends from the lid to the separator, the body, the separator and the lid defining an outlet chamber that is external to the body, within the lid and above the separator; a diffuser tube having a proximal end that is in fluid communication with the inlet and a distal end that is located within the lower volume, the distal end comprising a nozzle portion having a plurality of openings formed therein and a nozzle portion shape; and an outlet that passes through the lid and is in fluid communication with the interior volume, the outlet having at least one opening, each of the at least one opening being located within the outlet chamber; and a fill port that passes through the lid and terminates at a chute located along the sidewall within the lower volume, the fill port being in fluid communication with the interior volume and bypassing the separator; wherein the inlet further comprises a coupler located below the separator, the diffuser tube attached to and detachable from the coupler; and wherein the separator and inlet are operationally configured to prevent flow communication from the lower volume into the outlet chamber except through the separator. an interior volume segmented into an upper volume and a lower volume, the lower volume containing substantially all of the precursor material; a lid that defines at least a portion of the upper volume; a sidewall having an upper end comprising an upper lip and an upper opening, wherein at least a portion of the upper end contacts the lid; a base that defines a portion of the lower volume, the base including an interior bottom surface that defines a lower end of the lower volume, the interior bottom surface having an interior bottom surface shape; a separator located at the upper end of the sidewall, interposed between the lid and the sidewall, and spanning the upper opening, the separator being formed of a porous material and having a first aperture formed therein; an inlet that passes through the lid and is in fluid communication with the interior volume, the inlet having a body that extends from the lid to the separator, the body, the separator and the lid defining an outlet chamber that is external to the body, within the lid and above the separator; a diffuser tube having a proximal end that is in fluid communication with the inlet and a distal end that is located within the lower volume, the distal end comprising a nozzle portion having a plurality of openings formed therein and a nozzle portion shape; and an outlet that passes through the lid and is in fluid communication with the interior volume, the outlet having at least one opening, each of the at least one opening being located within the outlet chamber; and a fill port that passes through the lid and terminates at a chute located along the sidewall within the lower volume, the fill port being in fluid communication with the interior volume and bypassing the separator; wherein the inlet further comprises a coupler located below the separator, the diffuser tube attached to and detachable from the coupler; and wherein the separator and inlet are operationally configured to prevent flow communication from the lower volume into the outlet chamber except through the separator.