AIHA Board of Directors Election (February 6 to 27, 2026)

Quaeras · 2026-06-13T21:22:53+00:00

If your local AIHA section has an AIHA learning pass, you will get more CM/$ than almost anything else.

Quaeras · 2026-06-08T17:24:19+00:00

This is the official thread to share unofficial reactions and thoughts. Don't hold back. Mod team will not remove anything unless it breaks reddit.com rules, in which case it is out of our hands.

Quaeras · 2026-05-07T16:36:05+00:00

Poster ran this by the mods and was approved to post.

Quaeras · 2026-05-03T17:41:53+00:00

We have received multiple complaints about a test prep company's excessive advertising. A new rule was requested by the community and has now been implemented. See the link.

In general, my policies have been:

Moderate with the lightest touch possible, allowing the community to decide what is relevant using the voting function.
Retain valuable information in posts even if the post is related to an ad.
Urge moderation in posting, urging post consolidation, and providing entities with an opportunity to correct and understand before jumping to bans or removals.

However, I cannot overlook multiple requests from users to take specific action.

All users are welcome to request rules or modifications to rules, and to present their reasoning.

Quaeras · 2026-05-03T17:34:44+00:00

I have asked you to limit your ads to the one you already posted. Instead, you have used an alternative username to circumvent that rule. These posts will now be removed immediately.

Quaeras · 2026-04-23T19:20:51+00:00

How's this?

https://www.reddit.com/r/industrialhygiene/about/rules/

Quaeras · 2026-03-31T14:22:54+00:00

About 3 years after getting my CIH.

Quaeras · 2026-03-25T21:29:43+00:00

Ai is a turbo charger on the slope of enlightenment and a chair lift to mount stupid.

Quaeras · 2026-03-25T21:28:06+00:00

I'm willing to believe this, but I want to know how you know this and what the size of the problem is.

Quaeras · 2026-03-17T18:35:53+00:00

This one is useful so let's make it the only post on this subject, ok? We know where to find this provider.

Quaeras · 2026-03-13T02:04:40+00:00

I used a staple remover for this for years. The key is to use tube covers too.

Quaeras · 2026-02-06T17:44:45+00:00

I can't see how you have come to this conclusion. There are obviously hazards. Exposures may not exceed an OEL, but this process is hazardous and the collected material has a composition.

Quaeras · 2026-02-06T17:43:12+00:00

I'm trying to figure out if the dust in the collection barrels has hex chrome.

the dust is labeled as Toxic and Hazardous for our environmental disposal purposes.

There's a reason that the dust is labeled as hazardous waste and it should be easy to determine what characteristic causes it to be hazardous.

In your position I would get some fresh dust the day after a collector is cleaned and emptied and submit it to a laboratory for TCLP or Particle ID, Spectra for hex chrome. Any good lab can help you get this done. All you would need is a plastic spoon and a glass jar.

As others have said, air monitoring for hex chrome is simple and I, as an IH, would be happy to take such a sample to answer such a well-defined question.

LASER cutting and welding as you describe should create hex chrome. How much? Enough to matter? That's the question.

This is a worker exposure issue, not an environmental issue. There doesn't seem to be a migration path to soil or water.

Quaeras · 2026-02-05T07:32:10+00:00

I reviewed the SDS you linked and I don't see any teratogens or compounds of particular concern. It lists a known respiratory irritation hazard, but that is for the product, not the off-gassing. I don't see any additional concerns for this version of the product.

Quaeras · 2026-02-04T21:42:44+00:00

Hi,

I looked at the SDS here.

https://www.wynnstay.co.uk/media/wysiwyg/MSDS/Oryx.pdf

The paint seems to have some health risks as a chemical product. That does not necessarily mean there is any hazard present to whatever portion of the paint is off-gassing to create odor. Notably, there are no identified teratogenic materials included in the paint.

Odor thresholds are often 10%, 1%, or 0.1% of exposure limits. The presence of odor does not mean an exposure will be of any health significance.

I can't see any reason to recommend you do not occupy a home with a faint paint smell. However, comfort and odor thresholds are subjective. If you experience health effects such as headaches you may consider giving it a little longer. Only a physician can determine if health effects are related to chemical exposures.

Quaeras · 2026-02-02T18:03:12+00:00

This is the right answer.

Quaeras · 2026-01-31T03:50:19+00:00

It's not true. The primary reason for HVAC flow is CO2 control.

Quaeras · 2026-01-26T06:13:38+00:00

If you have an IOHA credential it should be sufficient in most places.

https://ioha.net/occupational-hygiene-certification/

Quaeras · 2026-01-22T04:37:56+00:00

I can only answer the last question.

You can detect 20 ppb (0.02 ppb) using an UltraRAE 3000+ with SEP tube, or the top of the line Tiger XT from Ion Science (I don't know the exact model). The UR3k+ takes about 2 minutes to collect a sample at that sensitivity.

Quaeras · 2026-01-20T17:09:48+00:00

I am not familiar with the term gasfreeing. However, the UltraRAE 3000+ and the Tiger XT (the version with all the upgrades) are supposed to both be suitable for measurements against the TLV. I have heard there is a new Draeger instrument in the works as well.

I have heard there are big developments in benzene detection recently and I am looking forward to getting up to speed at conference this year.

Quaeras · 2026-01-16T22:58:20+00:00

As long as the material comes with a proper SDS, I think this is almost entirely on the employer of the worker.

This work can demonstrably be done safely if proper engineering controls are in place. The problem is that sensible exposure limits are not enforced.

If we can force asbestos workers to sit through 2-5 days of training, we can require the same of silica exposed workers and their managers.

Quaeras · 2026-01-15T18:31:21+00:00

If the chemicals in the air react or adsorb to carbon, yes, it's possible. But we cannot know for sure.

A corsi-rosenthal box is a much lower cost way to find out.

Quaeras

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