Proper Swab Sampling Procedure

Step 1 - Preparation

Step 1 - Preparation

• - Select appropriate swab (see Swab Selection Guide below).
• - Define region/area to be tested.
• - Dampen swab with diluent.

Step 2 - Sampling

Step 2 - Sampling

• - Swab with overlapping pattern (see Step 1), keeping entire swab head flat against testing surface.
• - Flip swab and repeat, passing swab in perpendicular direction (see Step 2).
• - Repeat procedure with second swab at 45° angles (see Steps 3 & 4).
• - Swab the perimeter.

Step 3 - Transfer

Step 3 - Transfer

• - Snap swab head at the notch along edge of swab handle.
• - Allow swab head to fall into vial without touching it with your fingers.
• - Transfer for TOC or HPLC analysis.

Swab Requirements

• Minimal background interference
• High recovery rate
• Low particle generation

Where to Perform Swab Sampling

• Irregular Surfaces
• Hard-to-reach areas
• Presence of product/cleaning residue
• Heated surfaces
• Porous surfaces

Example of Contaminant Release on TX714K