Page 4 - Food&Beverages PFAS_analysis

Field Equipment and Sampling Bottles

Potential sources for PFAS cross-contamination include many

items commonly found in the sampling equipment, such as items
directly involved in the sample collection (e.g., automatic samplers,

dippers and tubing) and other accessories. To ensure an accurate
assessment of PFAS, sampling personnel should take precautions

when collecting samples.

Due to potential adsorption of analytes onto glass, lab and field
personnel should use polypropylene containers for all standard,

sample and extraction preparations. Polypropylene bottles fitted
with polypropylene screw caps allow for PFAS sampling without the

risk of cross-contamination. Sample bottles must be discarded after
use to prevent contamination from previous sampling procedures.

Items to AVOID Items RECOMMENDED
During Sampling During Sampling

Any items with a non-stick High-density polyethylene (HDPE)
coating containing PFAS, or polypropylene containers with
including containers, tubing or HDPE or polypropylene caps.
any other waterproofed items
(e.g., notebooks).

Plastic materials potentially HDPE or silicone tubing materials.
containing PFAS.

4