Currently, powdered samples for X-ray fluorescence analysis are usually directly pressed into sample pieces. But that kind of sampling has become a major error factor impacting the precision and accuracy of the element analysis due to the granularity effect, mineral effect and segregation effect of the sample pieces. The bead fusion method can eliminate the granularity, mineral and segregation effects of the samples, and can reduce the absorption and enhancement effects between the elements in the sample, and hence evidently increase the precision and accuracy of the analysis. This bead fusion method is a perfect sampling method for ICP, AA, as well as for indissolvable samples in wet chemical analysis.
For many years, the fusion machine used in China were all imported from abroad at very high price. To fill up that gap in Chinese science and technology, the research and development personnel in our company developed the DY501 Electroheat Fusion Machine in the year 2002. This fusion machine absorbed the advantages of all the fusion machine of the same kind in the international markets, with key properties up to or even better than those of the overseas products. With its excellent performance and reasonable price, it will take the place of the imported products and can be affordable for the users which are currently not using fusion units just because of economic reasons. The popularization of the DY501 Electroheat Fusion Machine will rapidly promote the bead fusion method in China and hence improve the sampling quality of the element analysis, which can bring tremendous economic benefit for every industry or trade.

技术参数：

加热单元：3根双螺旋单端硅碳棒；
zei大温度：1250℃，连续可调；
测温单元：2根铂铑热电偶，zei高测温1600℃；
容量：同时熔融4个样品（可根据用户要求增加到6个）；
功率：6kw;
电源：380-415V,50-60Hz，三相;
尺寸（高×宽×深）：500mm×1217mm×500mm;
重量：115kg.
Heating unit: 3 pieces of double helix ,single-end, silicon carbide rod
Maximum Temperature: 1250℃,continuously adjustable
Temperature measurement unit: 2 pieces of platinum-rhodium thermocouple, with maximum measurable temperature 1600℃
Capacity: 4 samples simultaneously (maximum 6 samples if required by user)
Wattage: 6kw
Power supply: 380-415V,50-60Hz，three phase
Dimension(Height ×Width × Depth): 500mm×1217mm×500mm
Weight: 115kg