Proper Swab Sampling Procedure

Step 1 - Preparation

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

Step 2 - Sampling

• Step 1: Begin sampling by swabbing the surface using horizontal, unidirectional, parallel strokes
• Step 2: Flip the swab over and swab in a perpendicular direction using the same technique
• Step 3&4: Repeat procedure with second swab at 45° angles. Flip the swab over for Step 4
• Step 5: Swab the perimeter with the swab tip

NOTE: Swab using the entire head flat against testing surface.

Step 3 - Transfer

1. Snap swab head at the notch along the edge of swab handle
2. Allow swab head to fall into vial
3. Replace the cap, label the sample and 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

Scroll left or right to see more data

Texwipe Cleaning Validation Series Swabs

Texwipe TOC Cleaning Validation Kits