MagPure Pathogen DNA/RNA Kit B

How to read this note

1. Workflow structure
This workflow separates the SDS-assisted bead-tube disruption stage from the downstream manual magnetic bead purification path. It is intended as a practical companion to the product manual rather than a replacement for the official protocol. R6672B also supports 32-channel and 96-channel extractor workflows after the Part I sample pretreatment stage; this note focuses on the manual route because it shows the direct pathogen disruption and magnetic purification logic most clearly.

2. Time interpretation
Protocol times stated in the product manual are retained where applicable. Steps without explicit timing are estimated for an experienced operator, including pipetting, tube transfer, centrifuge or magnetic-rack handling, supernatant / filtrate removal and tube or column repositioning. For short protocol ranges, the timeline uses the midpoint. For long or optional protocol ranges, the displayed standard timeline uses the shortest reasonable path, while the note and total-time range indicate where extended handling may apply. Cumulative time runs continuously from the first step to final elution across all workflow sections.

3. Workflow characteristics
R6672B uses a direct pathogen disruption strategy rather than the host-background reduction and fraction-recombination logic used by R6672C. SDS and bead-tube grinding help disrupt pathogen material before the clarified lysate enters MPN9 magnetic particle binding, MW1 / MW2 washing, drying and AVE elution.

4. Practical considerations
The key handling point is efficient front-end disruption and clarification before magnetic binding. Cell-rich samples should be clarified to reduce excess host-cell carryover, and sputum or lavage samples should be fully liquefied with DTT before operation. This workflow is best presented as a direct pathogen DNA/RNA preparation route for pathogen panel or targeted NGS workflows, not as a host-depletion enrichment workflow.