FIG. 1.

Spectrophotometric scan. (A) SPS at 0.0135% dissolved in water. (B) BacT Alert blood culture medium (0.1 ml) inoculated with blood was washed three times by centrifugation in 10 volumes of water (method F) and was then processed by the QIAmp blood digestion and DNA purification protocol (method B). Water eluate from the silica column, which normally contains purified DNA, was scanned.