Passive sampler

1. A method of at home sampling comprising:

providing a passive sampling device to a user, comprised of

a member having a first surface and a second surface opposite the first surface;

a hole through the member extending from the first surface to the second surface;

a first mesh member interconnected to the first surface;

a second mesh member interconnected to the second surface; and

an adsorbent material positioned between the first mesh member and the second mesh member;

placing the passive sampling device in a drinking glass;

placing the passive sampling device under a tap water faucet in the user's home;

filling the drinking glass with tap water;

leaving the tap water faucet on to continuously drip into the drinking glass, wherein the tap water faucet maintains a constant low flow of tap water into the drinking glass for a sampling period, and wherein the drinking glass is constantly overflowing thus creating a continuous flow-through cell; and

enabling equilibration of the passive sampling device in the tap water over the sampling period.

2. The method of claim 1 , wherein the sampling period is between 12 and hours from when the passive sampling device is first placed into the tap water.

3. The method of claim 1 , wherein the sampling device samples at least one type of perfluoroalkyl substance.

4. The method of claim 1 , wherein the member is made of high-density polyethylene.

5. The method of claim 1 , wherein the member forms a high-density polyethylene housing, the first mesh member forming a first window, the second mesh member forming a second window, each mesh member being formed of high-density polyethylene mesh, and between 100 and 500 mg of organosilica adsorbent being disposed between the first mesh window and second mesh window.

6. The method of claim 5 , wherein the organosilica adsorbent is synthesized with a flexible micropore structure allowing the media to expand more than 1.5 times in size after being exposed to at least one type of perfluoroalkyl substance when placed in a solvent.

7. The method of claim 1 , wherein the adsorbent material concentrates at least one type of perfluoroalkyl substance in a predictable manner, which allows for reliable measurement and quantitation of the at least on type of perfluoroalkyl substance in the tested solvent.

8. The method of claim 1 , wherein the adsorbent material adsorbs at least one type of perfluoroalkyl substance regardless of the perfluoroalkyl substance chain-length and charge-state.

9. The method of claim 1 , wherein the adsorbent material adsorbs compounds that range in carbon chain length, functional chemical groups, degree of fluorination, and isomerization.

10. The method of claim 1 , wherein the member further comprises a unique serial number, wherein the serial number minimizes transcription errors.

11. The method of claim 10 , wherein the serial number is encoded on a QR code that supports electronic data capture.