[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Cheap safelights
>From: "Joel E. Gray, Ph.D." <joelgray@SPRYNET.COM>
>
>Dan,
>
>Good pickup!! These appear from time to time as vendors attempt to sell
>inexpensive (cheap!!) safelights. The lights are designed for the graphic
>arts field where their films are primarily blue sensitive. Consequently,
>folks think they will work in radiography. These will fog film even if one
>puts lower wattage bulbs in them.
>
>We all know what the appropriate safelight fixtures look light and the
>color of light should see in the darkroom. If it looks different, it will
>probably fog film!
>
> Joel
>
>Joel E. Gray, Ph.D., Consultant
>2804 Second Street Southwest, Suite 334
>Rochester, Minnesota 55902
>
>Business Phone 507-269-4247
>Fax 507-286-8910
>Home Phone 507-286-8910
>e-mail joelgray@sprynet.com
>
>
>At 10:49 AM -0500 4/13/00, Dan Marvel wrote:
>>I have recently found several facilities that have improper safelights.
They
>>purchased them from their normal radiographic suppliers, so they assumed
that
>>the lights were appropriate for use with medical film. They are easy to
spot:
>>the darkroom looks twice as bright as normal and the filter looks like
molded
>>red plastic, which it is.
>>
>>I intend to follow up with the supplier(s) to see if these are new items
>>to the
>>catalogs (which could be a national problem) or if someone locally has just
>>started pushing these products, unaware that they fog medical film. Some
>>states
>>do not require fog tests at non-mamography facilites, so they might
>>suspect that
>>inconsistent exposures are due to the x-ray equipment, rather than the
>>safelight.
>>
>>Dan Marvel
>>Gundersen Lutheran
>>La Crosse, WI
>>
>>----------------------------
>>World Congress on Medical Physics and Biomedical Engineering
>>23-28 July 2000, Chicago, USA http://www.wc2000.org
>>
>>Frequently Asked Questions (FAQ) for Medphys
>>http://sherouse.home.mindspring.com/MPFAQ/
>
>----------------------------
>World Congress on Medical Physics and Biomedical Engineering
>23-28 July 2000, Chicago, USA http://www.wc2000.org
>
>Frequently Asked Questions (FAQ) for Medphys
>http://sherouse.home.mindspring.com/MPFAQ/
>
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html