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ASTM 3 級手術牙科面膜(50盒)
MEETS ASTM LEVEL 3 REQUIREMENTS These 3ply face mask meet the ASTM Level 3 standards, providing resistance to fluids and bacterial and sub-micron particle filtration efficiency.
BACTERIAL FILTRATION EFFICIENCY (BFE) ≥ 98% These breathable face masks provide protection for dentists, doctors and other healthcare providers as well as to people needing protection from moderate amounts of spray and fluid. As well as protecting against flu, colds, pollen, dust and other airborne contaminants.
好奇問句 點解牙醫要用到3級 定真.醫護用都係3級