milky quartz tube surface glossy milky-white color, high purity, abrasion resistance ... spectrum with wavelength under 4 U, it makes the tube body itself heat and increase the heat energy radicalization. ... (it is generally at 3-25u areas,it has strong absorption) Offer most effective alternative absorption to heat material ... Heater, disinfect tank, microwave oven, Electric Oven etc. milky silica tube