Laboratory Gas Drying Unit

The Laboratory Air and Gas Drying unit is an all-purpose drier. This unit is suitable for most laboratory applications. It will dry air to a dew point of –100°F at atmospheric pressures up to 90 psig. A simple connection by rubber hose to the bottom inlet of the dryer provides an immediate flow of dry air or gas. This unit is also available with 1/8 inch SS NPT fittings. Plastic coated mounting clips may be purchased separately.

Continuous flow are possible with two units in the line and the necessary valves so that the exhausted column may be refilled while the alternate column remains in use.

The unit can be used in every non-corrosive gas line in the laboratory to provide air or gas for applications:

• blanketing
• sample preparation
• instrument protection
• reaction mixtures
• purging
• vacuum release
• venting with dry air

The Indicating Drierite gives constant visual assurance of active desiccant. When active, Indicating Drierite is a distinct blue color. When exhausted, it turns a rose red or pink. The zone between the two colors in the column may be a purple color and should be a sharp narrow band when the flow rate is at equilibrium. Regeneration will restore the drying capacity.

The unit can be refilled with fresh Drierite, or the granules can be removed from the column and regenerated.

W.A. Hammond Drierite Company Ltd., P.O. Box 460, Xenia, OH 45385. Tel: 937-376-2927. Fax: 937-376-1977.