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Item Number: AT-N586

OZONE BADGE, 10/BX

586 Ozone Monitor, 10/Bx

Associated Analytical Methods: OSHA 214
Item Number: AT-N586
Manufacturer PN: N586
Availability: Drop Ship From Manufacturer

Easily measure personal exposure to ozone with our 586 Ozone Monitor! Ozone is collected indirectly on fiberglass treated with nitrite. The ozone reacts with the nitrite ion (NO2–) to form a nitrate ion (NO3–). The filter is then extracted with deionized water and analyzed for nitrate by ion chromatography. A low instrument reporting limit is made possible by using an ultra pure source of nitrite.

Refrigerated product. Maximum 2 days in shipping. Avoid shipping over the weekend. Store refrigerated, upon receipt.

This badge is NON-RETURNABLE

This badge collects the following:

  • Ozone

More Information on the Sampling Guide.

Before sampling, ship at room temperature to arrive within 2 business days to preserve maximum shelf life. Store refrigerated.

After sampling, store and ship at room temperature. Ship samples to arrive at the laboratory within 14 days of sampling.

Monitor may be used for 8-hour TWA sampling.

The 586 Reporting Limit from Assay Technologies:

When it comes to the reporting limit for the 586 Ozone badge, it’ll help to review how the 586 badge works. Inside the 586 badge is a wafer with sodium nitrite on it. When ozone diffuses into the badge, it reacts with nitrite (NO2) to create nitrate (NO3). It’s the lab’s job to find out how much nitrate is on the badge and then convert the result back to presence of ozone. However, this task is complicated by that fact that, so far, it’s impossible to obtain sodium nitrite without having some nitrate present. That means there is a background of ‘ozone” on the wafers to deal with. In the Assay 586 badges, the average is about 0.2 ug of “ozone”.

Most labs would see the background of 0.2 ug and use a reporting limit well above it. Maybe 0.8 ug. However, if we used a RL of 0.8 ug for an Assay 586 badge, the 8 hour reporting limit would be 0.056 ppm, already half the OSHA PEL for Ozone of 0.1 ppm. (To keep from having a reporting limit higher than the OSHA PEL, we do recommend customers use the Ozone badge for 8 hours.)

But we realize customers would like a lower reporting limit than 0.8 ug. So, since the background of ozone is very steady, our reporting limit is not based on the average amount of background, but instead the standard deviation of ‘ozone’ found in the badges. You can think of it as a boat sitting on 0.2 meters of water, with little waves causing the boat to go up and down. As long as the water is 0.2 meters deep, it’s the standard deviation of the little waves that determine your ability to distinguish a positive result at your reporting limit.

In a recent study, we spiked 0.1 ug of ‘ozone’ onto 7 badges and got a standard deviation of 0.0274 ug. To determine the method detection limit, the standard deviation was multiplied by the student t value for 7 replicates and we came up with a MDL of 0.082 ug, below the desired reporting limit of 0.1 ug. The ability to see the reporting limit when ‘ozone’ is spiked on media is verified annually. The spike has been performed year after year, yielding acceptable results. In addition, with each analytical sequence, we analyze a reporting limit standard at 0.1 ug which has to be recovered within limits. All this satisfies the ISO 17025 policies for reporting limits.

Labs can have different reporting limits and still meet ISO 17025 policies.  Maybe they have a newer instrument or a more sensitive one.  Maybe instead of extracting the media with 2 mL, they use 6 mL.  Or, as in this case, we are just more aggressive that other labs.

Easily measure personal exposure to ozone with our 586 Ozone Monitor! Ozone is collected indirectly on fiberglass treated with nitrite. The ozone reacts with the nitrite ion (NO2–) to form a nitrate ion (NO3–). The filter is then extracted with deionized water and analyzed for nitrate by ion chromatography. A low instrument reporting limit is made possible by using an ultra pure source of nitrite.

Refrigerated product. Maximum 2 days in shipping. Avoid shipping over the weekend. Store refrigerated, upon receipt.

This badge is NON-RETURNABLE

This badge collects the following:

  • Ozone

More Information on the Sampling Guide.

Before sampling, ship at room temperature to arrive within 2 business days to preserve maximum shelf life. Store refrigerated.

After sampling, store and ship at room temperature. Ship samples to arrive at the laboratory within 14 days of sampling.

Monitor may be used for 8-hour TWA sampling.

The 586 Reporting Limit from Assay Technologies:

When it comes to the reporting limit for the 586 Ozone badge, it’ll help to review how the 586 badge works. Inside the 586 badge is a wafer with sodium nitrite on it. When ozone diffuses into the badge, it reacts with nitrite (NO2) to create nitrate (NO3). It’s the lab’s job to find out how much nitrate is on the badge and then convert the result back to presence of ozone. However, this task is complicated by that fact that, so far, it’s impossible to obtain sodium nitrite without having some nitrate present. That means there is a background of ‘ozone” on the wafers to deal with. In the Assay 586 badges, the average is about 0.2 ug of “ozone”.

Most labs would see the background of 0.2 ug and use a reporting limit well above it. Maybe 0.8 ug. However, if we used a RL of 0.8 ug for an Assay 586 badge, the 8 hour reporting limit would be 0.056 ppm, already half the OSHA PEL for Ozone of 0.1 ppm. (To keep from having a reporting limit higher than the OSHA PEL, we do recommend customers use the Ozone badge for 8 hours.)

But we realize customers would like a lower reporting limit than 0.8 ug. So, since the background of ozone is very steady, our reporting limit is not based on the average amount of background, but instead the standard deviation of ‘ozone’ found in the badges. You can think of it as a boat sitting on 0.2 meters of water, with little waves causing the boat to go up and down. As long as the water is 0.2 meters deep, it’s the standard deviation of the little waves that determine your ability to distinguish a positive result at your reporting limit.

In a recent study, we spiked 0.1 ug of ‘ozone’ onto 7 badges and got a standard deviation of 0.0274 ug. To determine the method detection limit, the standard deviation was multiplied by the student t value for 7 replicates and we came up with a MDL of 0.082 ug, below the desired reporting limit of 0.1 ug. The ability to see the reporting limit when ‘ozone’ is spiked on media is verified annually. The spike has been performed year after year, yielding acceptable results. In addition, with each analytical sequence, we analyze a reporting limit standard at 0.1 ug which has to be recovered within limits. All this satisfies the ISO 17025 policies for reporting limits.

Labs can have different reporting limits and still meet ISO 17025 policies.  Maybe they have a newer instrument or a more sensitive one.  Maybe instead of extracting the media with 2 mL, they use 6 mL.  Or, as in this case, we are just more aggressive that other labs.


Cross-reference of Assay Monitors with 3M Monitors

 Assay Monitors  3M Monitors
 AT-N555  3M-3551
 AT-N566  3M-3500
 AT-N566  3M-3520
 AT-N571  3M-3721

*The above table of cross-referenced product information is for comparison purposes only. The information about non-Zefon products was gathered from published price lists, websites and catalogs of other manufacturers and providers, which information may change from time to time. Any Trademarks listed are owned by their respective owner. No ownership is implied. Please note packaging quantities between manufacturers may vary.

 Item  Before Sampling  After Sampling
 AT-N525, AT-N543, AT-N546, AT-N566  Store and Ship at Room Temperature  Store and Ship at Room Temperature

 Return to Lab within 14 days
 AT-N549  Store and Ship at Room Temperature  Store and Ship at Room Temperature

 Return to Lab within 14 days
 AT-N555  Store and Ship at Room Temperature  Room Temperature

 Return to Lab within 14 days
 AT-N571  Ship at Room Temperature to arrive within 2 calendar days. Store under refrigerated conditions for maximum shelf life.  Room Temperature

 Return to Lab within 28 days
 AT-N574  Store and Ship at Room Temperature  Room Temperature

 Return to Lab within 14 days
 AT-N575  Store and Ship at Room Temperature  Room Temperature

 Return to Lab within 14 days. (Lot 3C20 and after)
 AT-N581  Ship at Room Temperature to arrive within 2 calendar days. Store under refrigerated conditions for maximum shelf life.  Room Temperature

 Return to Lab within 28 days
 AT-N584  Ship at Room Temperature to arrive within 2 calendar days. Store under refrigerated conditions for maximum shelf life.  Room Temperature

 Return to Lab within 14 days
 AT-N585  Ship at Room Temperature to arrive within 2 calendar days. Store under refrigerated conditions for maximum shelf life.  Room Temperature

 Return to Lab within 28 days
 AT-N586  Ship at Room Temperature to arrive within 2 calendar days. Store under refrigerated conditions for maximum shelf life.  Room Temperature

 Return to Lab within 14 days
 AT-N587  Store and Ship at Room Temperature  Room Temperature

 Return to Lab within 14 days 
 AT-N592  Ship at Room Temperature to arrive within 2 calendar days. Store under refrigerated conditions for maximum shelf life.  Room Temperature

 Return to Lab within 14 days
 AT-N593  Store and Ship at Room Temperature  Room Temperature

 Return to Lab within 28 days
 AT-N594  Store and Ship at Room Temperature  Room Temperature

 Return to Lab within 28 days
 AT-N595  Store and Ship at Room Temperature  Store and Ship under Refrigeration

 Return to Lab within 3 days
 AT-N596  Store and Ship at Room Temperature  Room Temperature

 Return to Lab within 14 days

Technical Documents

 Product  Technical Documents
 AT-N525
 AT-N543
 AT-N546
 AT-N555
 AT-N566
 AT-N571
 AT-N575
 AT-N581
 AT-N584
 AT-N585
 AT-N586
 AT-N592
 AT-N593
 AT-N594

 

Products specifications
NOTE Non Returnable
STORAGE Refrigeration Required
TYPE Ozone
ANALYSIS Not Included
MANUFACTURER Assay Technologies
Products specifications
NOTE Non Returnable
STORAGE Refrigeration Required
TYPE Ozone
ANALYSIS Not Included
MANUFACTURER Assay Technologies
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