1.  Your order will be shipped with carbonless Chain of Custody Forms for recording all required information. If more are needed, print enough Chain of Custody Forms so that the deployment and retrieval data for each PassiveX™ Sampler can be recorded on a row corresponding to the sample.  One copy of the Form is sufficient for 15 PassiveX™ Samplers. Alternatively, you can download an e-Chain of Custody Form to record the information electronically.

2.  If the deployment plan includes a field blank, take the field blank to a sampling site in the tube in which it was shipped. At deployment of another sampler, remove the field blank from its tube for about the time that is typical for deploying PassiveX™ Samplers. Return the field blank to its tube and clearly mark the tube “Field Blank”.  This method will register any incidental contamination from manufacturing, shipping and deployment. Deploying a field blank in DI water is not necessary, as this potential source of contamination is not typically what is measured by field blanks in passive samplers. 

3.  Make provisions to save the 50 mL tapered centrifuge tube and the resealable plastic packaging for reuse in shipment to the lab.  (No need to match the PassiveX™ Sampler to the 50 mL tube or other packaging materials in which it was shipped. Any clean tube will suffice.) 

4.  Remove the PassiveX™ Sampler from the 50 mL tapered centrifuge tube.  It is shipped with a metal tag attached to the flat end that can serve as a weight, if needed. 

5.  Attach a sufficient length of line to the narrow end of the PassiveX™ Sampler so that it can be lowered into the groundwater. Anchor or tie the PassiveX™ Sampler to the groundwater well to keep it secure during deployment and facilitate retrieval. 

6.  At deployment, record on the Chain of Custody Form or e-Chain of Custody Form: 

• The sample ID number (the serial number on the metal tag or other system appropriate to your deployment);  
• The date deployed; 
• The time deployed (to the nearest 15 minutes); and  
• The water speed at the sample site (likely 0-2 cm/min). 

7.  For most applications, a deployment of approximately 10-14 days duration will be sufficient to achieve a limit of detection of ~1-2 ng/L (ppt) for all PFAS analytes in EPA Method 1633. 

8.  In some locations, it is possible that the PassiveX™ Sampler will accumulate some dirt or debris during a typical deployment. In most cases, the commercial lab can address this during their analysis. Alternatively, you can plan to bring ~50 mL of DI water to rinse each PassiveX™ Sampler at retrieval.  

9.  At retrieval, record on the row in the Chain of Custody Form corresponding to the PassiveX™ Sampler: 

• The date retrieved; 
• The time retrieved (to the nearest 15 minutes); and  
• The water temperature (in °C).   

(The water temperature could be recorded at deployment.) 

10.  Remove any large debris from the body of the PassiveX™ Sampler before restoring to a 50 mL tapered centrifuge tube for shipment. Alternatively, a light "swish" in the water, or use 50 mL of DI water to remove most dirt and debris before shipment. 

11.  Replace the PassiveX™ Sampler in a 50 mL tapered centrifuge tube and tighten the cap.  Place the tube with PassiveX™ Sampler in the resealable plastic bag or other return packaging. 

12.  Place all PassiveX™ Samplers in refrigerated packaging as per EPA Method 1633 and ship using at most two-day delivery to laboratory for analysis.