99. 9% of airborne bacteria. This system further reduces the risks of cross infection and protects the instrument from contamination. The D piece is" name="description"/> 99. 9% of airborne bacteria. This system further reduces the risks of cross infection and protects the instrument from contamination. The D piece is" property="og:description"/> 99. 9% of airborne bacteria. This system further reduces the risks of cross infection and protects the instrument from contamination. The D piece is" name="twitter:description"/>