1.  Your order will be shipped with carbonless Chain of Custody Form or you can download an e-Chain of Custody Form 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™ Sediment Sampler can be recorded on a row corresponding to the sample.  One copy of the form is sufficient for 15 PassiveX™ Sediment Samplers. 

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(s) and the resealable plastic packaging for reuse in shipment to the lab.  (No need to match the PassiveX™ Sediment Sampler to the 50 mL tube or other packaging materials in which it was shipped.) 

4.  Remove the PassiveX™ Sediment Sampler from the 50 mL tapered centrifuge tube.  It is shipped with a metal tag attached to the flat end that will can serve as sample identification, or to help with retrieval. 

5.  Insert the PassiveX™ Sediment Sampler into the Sediment to be monitored by whatever means required. The PassiveX™ Sediment Sampler is designed with a stainless steel body and washers to provide sufficient strength for insertion.

6. At deployment, record on the 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 (use 0-2 cm/min for sediment). 

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 addressed in EPA Method 1633. 

8.  The PassiveX™ Sediment Sampler will likely 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™ Sediment Sampler at retrieval. 

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

• The sample ID number (the serial number on the metal tag or other system appropriate to your deployment);  
• The date retrieved; 
• The time retrieved (to the nearest 15 minutes); and  
• The water temperature in °C. 

(The water temperature could have been recorded at deployment.)

10. Briefly rinse the PassiveX™ Sediment Sampler with ~50 mL of DI water to remove most dirt and debris before shipment.

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

12.  Place all Sentinel™ Sediment Passive Samplers in refrigerated packaging as per EPA Method 1633 and ship overnight (or at most two-day delivery) to laboratory for analysis.