[kapital]

How much in approximate price for:
a) gas chromatograph
b) spectrophotometer (UV)
c) IR spectrometer
d) NMR spectrometer

[kapital]

How much in approximate price for:
a) gas chromatograph
b) spectrophotometer (UV)
c) IR spectrometer
d) NMR spectrometer

Does any body know?

[Biopolmonkey]

Well, at a very rough guess (in GBP £) I'd say the first the first three would start in the thousands (if not tens of thousands). NMR, a couple of hundred thousand? ... Maybe pushing a million for something super spangly. But, I've never had to buy this stuff so like I say ... Just rough guesses.

[kapital]

Why is a NMR spectrometer so expensive? Which of his properteis contribute to this the most? Does any one now for some reliable internet page with this informations? I saw them many and they have quite different informations and I do not know which are more right and which are not? Thanx for answer.

[marquis]

Its hard to answer your questions, because the instruments can vary over a dramatic range.

We'll  use a GC as a base.  The price can range from say $10K (US) for a very basic model to well over $250k.  It depends on your application. The base unit is for a straight GC with a TCD (or maybe FID) detector.  The high end would be a mass spec system with auto samplers and multiple detectors.  This is before you start talking about used systems, rebuilt systems, and some very basic GC-like systems.

The question boils down to "what's your application?".  This will determine many of the detectors and system requirements.  And this holds true for all the instruments that you mention in your email.

[408]

First three can be gotten on ebay for 100-1000 USD

The last I have never seen anywhere for less than 10k

I have no idea about new prices

[kapital]

Why is NMR spectrophotomer so expensive?

[skyjumper]

http://en.wikipedia.org/wiki/NMR_spectroscopy They are not exactly small....

[kapital]

But that probably not the main reason...

[Biopolmonkey]

Ignoring the other components required, the magnets are expensive for NMR.

[kapital]

Aha. And why are magnets expensive?

[kapital]

And btw, from which chemical compound(s) are magnets from?

[Borek]

These are superconducting electromagnets, much stronger than anything we can made even of rare earth metals.

[kapital]

How do they do them?

[DrCMS]

This thread is getting out of hand.

A UV spectrophotometer is relatively simple you just shine UV through the sample and scan through the wavelengths and look for what has been absorbed.  They are the size of a PC tower and can be standalone or connected to a PC.  They can be bought new for say $3-10K depending on the sophistication required

An IR spectrometer is similar to the UV machine but modern ones use FT-IR so the software and detection is more expensive.  They are a little bit bigger than the UV machine and will have a PC attached to them.  New ones are say $10-20K

A gas chromatograph is bigger again but still small enough to be on the bench top and will also need a PC for the data capture/manipulation.  It is essentially a very sophisticated oven with theromostatically controlled injection ports and detectors on the outside and a long tin coiled column on the inside.  The temperature control/accuracy/reproducibility as the temp is raised and lowered is critical to the quality of the results.  New ones are say $15-30K (or +$100K if you want GC-MS.)

A modern NMR spectrometer uses superconducting magnets that need to be cooled via liquid helium with an outer liquid nitrogen cooling.  They are very large machines and typically are installed in a room to themselves.  An NMR is considerably more complex and expensive that the other machines and is likely to cost multiples of  $100K and for very high field machines will be multi $1M's