[labnetwork] "yellow" film for windows

[Matt Moneck]

Hi Dennis,
 
We went with a product called Amber 81 from Madico in our new cleanroom (http://www.madico.com/wp-content/uploads/Amber-81-spec-sheet.pdf).  One of our consultants, David Alessi, from Stantec chose this product after exploring a number of options.  It does come in a film that can be installed on pre-existing windows (this was done on a few windows that were missed during the lab construction).  
 
Thus far we have been happy with it.  It is more “amber” and bit darker than the “yellow” filters we use in our older facility; although, that being said, it still allows enough higher wavelength light to pass for good visibility (transmission spikes just around 520nm).  It blocks  >99% of UV below 380nm and it blocks >90% of light in the 400-500nm range (note that while transmission is still below 10% at g-line, it does allow slightly higher transmission in this area of the spectrum as compared to the higher end of the 400-500nm range).  
 
One additional item to note is that some of these window films can be soft and are relatively easy to cut or scratch, even after they are installed.  We are happy the Amber 81 product, but we have had a couple of occasions where scratches occurred as a result of someone leaning or bumping something against the window. 
 
Best Regards,

Matt
 
-- 
Matthew T. Moneck, Ph.D.
Executive Manager, Carnegie Mellon Nanofabrication Facility
Electrical and Computer Engineering | Carnegie Mellon University
5000 Forbes Ave., Pittsburgh, PA 15213-3890
T: 412.268.5430
F: 412.268.3497
 <http://www.ece.cmu.edu> www.ece.cmu.edu
nanofab.ece.cmu.edu
 
From: labnetwork-bounces at mtl.mit.edu [mailto:labnetwork-bounces at mtl.mit.edu] On Behalf Of Dennis Schweiger
Sent: Friday, February 10, 2017 11:20 AM
To: Fab Network <labnetwork at mtl.mit.edu>
Subject: [labnetwork] "yellow" film for windows
 
Good morning all,
 
we're in the process of upgrading our lighting, and correcting a couple of the "yellow" light issues we've uncovered.  We have windows within our facility that should have been covered, but weren't, and have some currently installed films that don't filter out as much UV as we'd like.  Has anyone recently worked with a film manufacturer, and found someone that can provide a roll stock material that works for them in a glass application, and something they're happy with?  The couple of places I've contacted so far are more into architectural films, so they're all over the variety of colors, but when I broach the subject of wavelength filtering to remove UV, it seems that's a "mad scientist" request.
 
Thank you,
 
Dennis Schweiger
Facilities Manager
University of Michigan/LNF
1301 Beal
Ann Arbor, MI 48109
 
734.647.2055 Ofc
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