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Forum index » Science and Technology » Chem » Analytical
FT-IR spectrometer and diffuse reflectance
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sardi
science forum beginner


Joined: 28 Apr 2006
Posts: 2

PostPosted: Fri Apr 28, 2006 12:19 pm    Post subject: FT-IR spectrometer and diffuse reflectance Reply with quote

I'm shopping for a new FT-IR spectrometer (mid-IR) in the 25-30 000$US
price range and I would greatly appreciate INDEPENDANT opinions.


I'm very concerned about energy throughput (and detection limit linked
the S/N ratio) because most of my experiments are with DRIFTS accessory

providing low signal.


Is there a spectrometer that you would recommend ?
I'm not sure between the P-E Spectrum 100, Bruker Tensor 27, Varian
(Digilab) Scimitar 1000 and Nicolet 380.


Every company claims they have the highest energy throughput and the
best instrument (off course). Varian with there Duraglow source pretend
they are the best but the others claim
that other parts of their instruments make them better than the
spectrometers with special sources...
Can you help me with all this ?
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dmathers@chem.utoronto.ca
science forum beginner


Joined: 03 May 2006
Posts: 1

PostPosted: Wed May 03, 2006 12:42 am    Post subject: Re: FT-IR spectrometer and diffuse reflectance Reply with quote

sardi wrote:
Quote:
I'm shopping for a new FT-IR spectrometer (mid-IR) in the 25-30 000$US
price range and I would greatly appreciate INDEPENDANT opinions.


I'm very concerned about energy throughput (and detection limit linked
the S/N ratio) because most of my experiments are with DRIFTS accessory

providing low signal.


Is there a spectrometer that you would recommend ?
I'm not sure between the P-E Spectrum 100, Bruker Tensor 27, Varian
(Digilab) Scimitar 1000 and Nicolet 380.


Every company claims they have the highest energy throughput and the
best instrument (off course). Varian with there Duraglow source pretend
they are the best but the others claim
that other parts of their instruments make them better than the
spectrometers with special sources...
Can you help me with all this ?

Sardi: Greetings. There is a very easy answer to this. Simply ask the
various suppliers to run a typical sample for you. Those that can't or
refuse, just remove them from your list of potential vendors.
Some additional questions you should be asking are what kind of
detector would give the best S/N (DTGS or MCT) for your application?
After all you can have the most powerful light in the world but it
doesn't help you to see if you are blind. What kind of service is
available in your region and what are the staffing/service area
(because something always goes wrong regardless of what your various
vendors will tell you)? Can you get a list of users from each vendor
in your area (with phone numbers) and can you call them to get their
opinion about the spectrometer? Those that won't or can't supply a list
I would scratch off your list also.

I've most of the spectrometers from the vendors you've mentioned over
the years. I am currently using PE's Spectrum 100 and I am very please
with it's ruggidness and dependability (we have 4 of these in an
undergraduate environment)

Hope this helps.


Regards,

Dan Mathers
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