HM-3000C infrared inoculation ring steriliser (large diameter) adopts infrared heat to sterilise, which can be widely used for microbiological experiments in bio-safety cabinets, purification benches, beside extractor fans and on mobile carts because of its convenience, simplicity of operation, absence of open flames, lack of fear of the wind and safety of use. The temperature inside the heating hole can reach more than 800℃, and it takes only 5 to 7 seconds to sterilize; ashing the organic substances in the depth of the ceramic pipe to prevent cross contamination; it can achieve one-time sterilizing effect for inoculation rings, inoculation needles, scissors, tweezers and so on.