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In the Synergist this month: Charles Manning

Cost-Effective and Convenient Exposure Assessment: Could It Be on a Path Toward Big Data? by Dr. Charles Manning, PhD, CIH Industrial hygienists responsible for workplaces that use chemicals typically do chemical risk assessments using combinations of three methods: monitoring (air sampling), modeling, and professional judgment. Professional judgment (so-called “qualitative exposure assessment”) has traditionally been popular Read More …


Transition to new Charcoal Media – Update

In November 2017, we announced that we would begin transitioning to a new charcoal media for all of our charcoal- based badges. This change was made necessary because the manufacturer of the carbon material we have used for the last 10 years or so, decided they would no longer produce the carbon/PTFE material. Knowing that people do not Read More …




Change of Method Reference for Organic Vapors

Notice to Lab Customers For years, Assay Technology has referenced a modified version of OSHA #7 (Organic Vapors) on our reports for most of the chemicals collected on charcoal media. (Badges:  546, 566, 521, and 525 for chemicals like benzene, IPA, and methylene chloride.) This method is very similar or the same as many of the other methods Read More …


Transition to new Charcoal Media

In November 2017, we announced that we would begin transitioning to a new charcoal media for all of our charcoal- based badges. This change was made necessary because the manufacturer of the carbon material we have used for the last 10 years or so, decided they would no longer produce the carbon/PTFE material. Knowing that people do not Read More …


Formaldehyde Levels in Homes

Formaldehyde is a common source of indoor air quality complaints for homeowners and in the workplace.  Commonly used in hospitals, poultry farms, funeral homes, and countless other professional environments, formaldehyde is also found in carpets, floor tiles, particleboard, and more.  Usually the amount of formaldehyde in a home is low enough to not be noticed and Read More …


How Often Do I Have to Monitor?

Our customer service team receives many calls from customers needing a little technical support.  Not surprisingly, some questions are more common than others.  The most common? Which Organic Vapor Badge should I use:  521, 566 or the 566? (See my earlier post) How do I read my report?  (See Lab Report FAQs) How often do Read More …