... 99.99% min 3,Resistance 1100 degree, 1000 long time work 4,Low OH 5, no bubble, no airline Glass rod1,glass ... long time work4,Low OH5, no bubble, no airlineSpecification:Outer Diameter: 2-40mmWe have produced 10-80mm transparent quartz rods through excellent quartz ... .,Ltd:We can supply more than 5 types and 70 speculations, ranging from 3-300mm clear quartz tube(high purity,good heating resistance ...