This paper will outline some of the things that I went through getting to where I now am in making quartz cells. Sometime in the mid-to-late 1970's I, along with many others, was introduced to Vitta Sealing Tape. My initial attempts at using it were not successful. In 1981, in a conversation with one of our grad students, Ken Kosnick, I found that he had also used it with some success. He stated that he had not followed the directions but had polished the ends of the tube, put the windows on, and then put the cell in the oven, which he ran to 900°C, pulling a slight vacuum during the sealing process. He opened the oven several times during the sealing process and felt this did not harm the cell. At this point, I would like to include the directions from the product data sheet: After separating the release paper, the parts are placed on the adhesive layer of the glass tape. Subsequently they are pressed, using a pressure in the range of 50-250psi for a period of no longer than 1 minute. It is recommended that an arbor press be used with rubber pressing plates having a durometer between 45 and 95. These factors will vary, depending on the individual application. After separation, the parts will have a sharp definition of the outline of the part and will separate only in the pressed areas.
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