Cem Corporation

Cindy Rushing Moser

William Edward Jennings

Michael J Collins, Sr

A method of element testing is disclosed that includes the steps of weighing a sample, pressing the sample between pads, applying microwave radiation to the sample and pads in the presence of a microwave susceptor material and ashing the pressed sample, adding the pads and the ashed sample to an acid, and forwarding filtrate from the pad-sample-acid mixture to a spectrometer.

Rapid quantitative element testing

The invention is an apparatus and method for obtaining accurate sample weight measurements during sample heating within a heating cavity by substantially reducing the convection currents that disrupt accurate sample weight measurement. The apparatus includes a heating cavity in which a sample can be placed, a source for introducing microwaves into the heating cavity, and an analytical balance for measuring the weight of the sample while the sample is in the cavity, and an air shield that is secured to the inside of the heating cavity so that the air shield will not contact the analytical balance. The air shield, which is made of material that is permeable to microwave radiation and yet absorbent of volatiles, is positioned in the heating cavity to reduce the convection current rising from the sample as the sample is heated.

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Monroe, NC, United States of America

Cindy Rushing Moser