Thanks for the introductory sources.

I've been looking for the test and measurement device vendors that
manufacture chemical, biological and medical equipments. Agilent seems the
one i was looking for. but there are many sub-categories so i cant find the
exact area of spectrophotometers.. Any advices and known vendors?



On 6/23/06, Vasile Surducan <piclist9@gmail.com> wrote:
>
> Basics:
>
> http://www.chm.davidson.edu/ChemistryApplets/spectrophotometry/Spectropho=
tometry.html
> http://pharmlabs.unc.edu/spectrophotometry/text.htm
> http://www.ruf.rice.edu/~bioslabs/methods/protein/spectrophotometer.html
>
> On 6/23/06, G=F6khan SEVER <gstr2005@gmail.com> wrote:
> > No no
> >
> > Thats what i've been looking for "Spectro-fotometer" (sorry for my
> mistake)
> >
> > I've googled the key and found your resume. I've been knowing that you
> are
> > active member on PIClist i've tried my chance..
> >
> > The project will be evolve from analog to mcu based mind and data
> > acquisition for reporting. First of all i've to grasp the inner
> philosophy
> > of this device then i will keep up going step-by-step.
> >
> > By the way is there a general reference guide for such devices
> (datasheets,
> > app notes, user manuals, leader vendor applications)???
> >
> > Thank you very much for your time and precious thoughts
> >
> > G=F6khan SEVER
> >
> >
> >
> > On 6/22/06, Vasile Surducan <piclist9@gmail.com> wrote:
> > >
> > > Useless information. You said spectrometer and I read
> spectrofotometer...
> > > :(
> > >
> > > On 6/22/06, Vasile Surducan <piclist9@gmail.com> wrote:
> > > > Building the electronics of a simple spectrofotometer it's easy if
> you
> > > > have the optics. First you have to define clearfully the optical
> range
> > > > (visible, UV, infrared)
> > > > and the sensitivity. Then you have to decide if will be with one or
> two
> > > spots.
> > > > One spot will make easy your life but will increase errors regarding
> > > > the probe alignement during calibration/measuring sequence.
> > > >  One important aspect is choosing the optic style (difraction plate,
> > > > prism, etc) and the dimension of cuvettes for the probes (which
> > > > determine the spot dimension also).
> > > >  One easy sollution is to buy the difraction chamber and the
> > > > photodiodes assembly (there are up to 1024 diodes, capturing the
> whole
> > > > visible spectrum once)
> > > > or to build your own detector and amplifier (which is quite easy for
> > > > lightwave between near infrared ~900nm to blue 400...430nm) and make
> > > > yourself the wavelenght monocromator assembly. The problem here is
> the
> > > > alignement of wavelenght, you must have a good reference source for
> > > > this job, or at least a set of interferential filters with very low
> > > > bandwith (which is difficult because filters below 5...10nm bandwith
> > > > are hard to found)
> > > >  I've modified in my life about 10 or maybe 20 proffesional optical
> > > > spectrum analyzers made with Karl Zeiss optics in the old time
> between
> > > > '65 to '75.
> > > > You can't see anymore such jewels.
> > > >  The microcontroller side is just the end of the job, because if you
> > > > don't have an excellent analogic design, the rest could be
> unusefull.
> > > >
> > > > success,
> > > > Vasile
> > > >
> > > >
> > > >
> > > > On 6/22/06, G=F6khan SEVER <gstr2005@gmail.com> wrote:
> > > > > Hi,
> > > > >
> > > > > In this summer break we are plannig to develop a spectrometer in
> our
> > > > > university. Although i've some emdedded design knowledge and
> > > experience i
> > > > > havent produce any biomedical devices previously. From now on i
> want
> > > to
> > > > > determine a solid thesis subject on biomedical area.
> > > > >
> > > > > Probably some of the PIClist members had been developed similar
> > > devices
> > > > > before and should be many members that are knowledgable on
> biomedical
> > > design
> > > > > field. So, Could you please guide me some on this diverse variety
> > > field to
> > > > > find my way?
> > > > > --
> > > > > http://www.piclist.com PIC/SX FAQ & list archive
> > > > > View/change your membership options at
> > > > > http://mailman.mit.edu/mailman/listinfo/piclist
> > > > >
> > > >
> > >
> > > --
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> > >
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> >
>
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