Frequently asked questions

What should I do with XSITU1 system after receiving it?

The system is provided with detailed handling instructions and recommended quality control procedures. The most important is not to open the system before placing the actual sediment sample into the jar. The passive sampler will accumulate hydrophobic organic compounds from other phases including air and water. It is crucial to keep the sampler sealed and clean. Any deviation from recommended procedures may introduce background contamination into the passive sampler and bias final results. After introducing sediment into the system, the jar should be tightly closed, checked for any leaks and shaken/rolled for predetermined amount of time.

How long should I expose the passive sampler with sediments?

For PRC loaded systems, times of between 14 days (for PAHs) and 28 days (PCBs) should generally be sufficient for exposure. Recommended times for different compound groups are provided in the handling instructions.

How should I treat the passive sampler after finishing exposure with sediment?

The sampler should be gently rinsed with MiliQ or deionized water immediately after retrieval and wiped with lint-free tissue (e.g., Kimwipes) to remove any adhering particles. Sediment particles or solids remaining on the polymer will be extracted along with the polymer resulting in overestimation of freely-dissolved concentrations. Detailed instructions are supplemented with the product.

Can I reuse the jar for other exposures?

It is not advised to reuse the jar. All jars come with unique barcodes and batch specifications.

What should I do with the polymer system when I don’t have access to specialized facilities and contract laboratories?

Customers may request support and bundled passive sampling services to meet their needs. Envirostatus will reach out to preferred laboratories and request specific analysis for the client.