Abstract: An assembly is provided for the controlled delivery of a two-component adhesive material that is moisture-labile, having a power supply powering a two-chambered pump for the metered delivery of the adhesive and a delivery gun for mixing the two-components at the point of delivery. In order to enable exposure to ambient, moisture-laden air while using large drums of adhesive material, at least one dual-apertured, desiccant cannister is provided sealably interfaced at an intake port on each of the drums A second aperture is provided on the desiccant cannister which is open to such ambient air. The second aperture is of a diameter sufficient to provide the influx of a necessary volume of air through the cannister(s) to accommodate the synchronized delivery of the two-component adhesive through the delivery gun. The desiccant is preferably calcium sulfate. Cobalt chloride is added to show a color change when the desiccant is saturated to enable recharge and/or replacement.