TEXTURED SURFACE FOR TEST SAMPLE CARDS AND MOLD FOR MANUFACTURING SAME

摘要

A test sample card is produced from a mold machined in accordance with an electronic discharge machining (EDM) process, with a resulting finely textured s urface of the mold left intact. The mold produces a test sample card that has an even fine ly textured surface which improves the adhesion of a membrane to the card surface. The card is better able to withstand prolonged incubation periods without separation of the adhesive membrane from the card surface, as compared to prior art cards.