Dremel 543 and EZ544 are both carbide cutting wheels for cutting and shaping on woods, fiberglass, plastics and laminates. Do not use them on metals. For 543 the mandrel is included; for EZ544 use the EZ402 Mandrel.
After Domagk published his findings in 1935, doctors found that Prontosil could control many bacterial infections. Subsequently, other researchers developed derivatives based on the Prontosil sulfonamide group. The resulting so-called sulfa drugs revolutionized medicine and saved many thousands of lives.
Worldâs first SF 6 gas insulated sub-station was established in Paris in the year of 1966. Sulphur hexafluoride medium voltage circuit breakers launched into market from 1971. SF 6 or sulfur hexafluoride gas commercially is manufactured by reaction of fluorine (obtained by electrolysis) with sulfur.During process of producing of this gas, other by products like SF 4, SF 2, S 2 F 2, S 2 F 10 are also produced in small percentages.or examine chemical properties of sulphur hexafluoride gas, we first introduce structure of this molecule. In this gas, molecule, one sulphur atom is surrounded by six fluorine atoms.