Andiyanto Sutandar

Andiyanto Sutandar replied to "UV meter" in the TB Infection Control community.

Thanks for all your input.

Andiyanto Sutandar started a discussion "UV meter" in the TB Infection Control community.

Hi All, I understand from document such as "Environmental Control for Tuberculosis: Basic Upper-Room Ultraviolet Germicidal Irradiation Guidelines for Healthcare Settings" from CDC (http://www.cdc.gov/niosh/docs/2009-105/pdfs/2009-105.pdf) that the limit is 0.2 uW/cm2 for 8 hour long exposure. I have struggled to find a meter that can accurately measure at that level. They are either with insufficient range, resolution or accuracy. I have found a couple of meter but they are very expensive. Would appreciate if anyone can ...

Andiyanto Sutandar replied to "UV meter" in the TB Infection Control community.

Dear Ed, I understood the difficulty of determining the total exposure and as you said, unless there is a big complaint on occupational health side, it is likely to be safe within the expected limit. As mentioned, user would probably still want to have a figure to work out what's considered safe. I do realise that there are plenty of so-called UVC meter although the spectral peak can be in any wavelength. There are quite ...

Andiyanto Sutandar replied to "UV meter" in the TB Infection Control community.

Thanks to all your response. I am curious how these exposure limit is actually enforced in practice. Or is the table in the document not meant for enforecement? Although it is not possible, it is not a simple task to monitor the total exposure of a particular occupant as well. Perhaps it is a good input to discuss with NIOSH on the exact meeting of this document? Would the consideration change when the UVGI is ...

Andiyanto Sutandar replied to "Problems with ultraviolet air disinfection in high burden settings" in the TB Infection Control community.

I am in the field of biosafety and this may be useful to you all: http://www.ehs.umass.edu/ABSA%20UV%20light%20paper.pdf The position paper by American Biological Safety Association (ABSA) described how they do not recommend the use UV in BSC (I can't find the link in ABSA's website). However, there has also been an article that examines both sides of the view = http://www.absa.org/abj/abj/061104meechan.pdf I want to add if the filter in BSC is removed, the filter and the ...