| Pages:
1
2 |
aliced25
Hazard to Others
Posts: 262
Registered: 31-7-2010
Member Is Offline
Mood: No Mood
|
|
Be a bloody sight smaller soon with luck
Anyone interested in a prototype modified halbach array that will be being tested with a simplified spectrometer? The design is going to be being
optimized for use at around 50-51MHz and will use opensource software (at the moment)... It is potentially a one-off chance to get involved in
something that involves some absolutely "mad science" at home, is fairly cutting edge and a boon to amateur/beginner scientists.
The array is Patent Pending (otherwise the Company involved would potentially/probably have to pay a fucking license fee to build their own design).
I've spoken with the parties involved and their aim is to get a 50-51MHz machine, using thick walled 4-5mm tubes (of lower than standard length - but
fairly standard all the same), that has similar performance characteristics to the PicoSpin (in terms of size, ease of use & output), to the
market at ~$1,000US within 12 months (obviously they are aiming for maximum market disruption). Similar advances in ease of use, size and accessibility in conjunction with low-cost compared to high-end markets, have been
successful before (http://mitpress.mit.edu/books/NORVH/chapter2.html)
[Edited on 16-11-2011 by aliced25]
From a Knight of the Realm: "Animated movies are not just for kids, they're also for adults who do a lot of drugs." Sir Paul McCartney
|
|
|
Polverone
Now celebrating 21 years of madness
Posts: 3186
Registered: 19-5-2002
Location: The Sunny Pacific Northwest
Member Is Offline
Mood: Waiting for spring
|
|
A wealth of desktop NMR machines: comparisons?
A lot has changed since the picoSpin 45 was launched in 2010. The company was acquired by Thermo Scientific. They now offer a higher resolution model,
the picoSpin 80, at 19 kg mass instead of 4.8 kg for the original. It still uses small capillary tubes.
There's a <a href="https://en.wikipedia.org/wiki/Benchtop_NMR_spectrometer">list on Wikipedia</a> of benchtop NMR spectrometers, all based
on rare earth permanent magnets as far as I can tell. Some use small capillaries to hold samples while others use standard NMR tubes. For some you'll
need a sturdier bench: 170 kg or more.
The Wikipedia page is somewhat out of date. It lists:
The <a href="http://www.magritek.com/products-spinsolve">Magritek Spinsolve</a>, 42.5 MHz.
The <a href="http://www.picospin.com/products/picospin-45/">Thermo Scientific picoSpin 45</a>, 45 MHz.
The <a href="http://www.nanalysis.com/nmready60p.html">nanalysis NMReady</a>, 60 MHz.
The <a
href="http://www.oxford-instruments.com/businesses/industrial-products/industrial-analysis/campaigns/something-is-missing/pulsar-delivering-nmr-to-you
r-benchtop">Oxford Instruments Pulsar</a>, 60 MHz.
It is missing:
The <a href="http://www.picospin.com/products/picospin-80/">Thermo Scientific picoSpin 80</a>, 80 MHz.
The <a href="http://www.bruker.com/products/mr/compact-mr/fourier-60/overview.html">Bruker Fourier 60</a>, 60 MHz.
Apart from price, what are strengths and weaknesses of these various systems? Anyone well versed in NMR care to offer an opinion? For example, there
are three nominally 60 MHz instruments available -- what else is important in choosing between them?
Edit: some <a href="http://process-nmr.com/WordPress/?p=273">external commentary</a>.
[Edited on 9-20-2013 by Polverone]
PGP Key and corresponding e-mail address
|
|
|
bfesser
Resident Wikipedian
Posts: 2114
Registered: 29-1-2008
Member Is Offline
Mood: No Mood
|
|
I'll see what I can do.
Interesting find, <strong>Polverone</strong>. Thanks for this update. 
[edit] Sloppily added the new spectrometers to the Wikipedia page. Are you considering purchasing one of these, or are you just curious?
[Edited on 20.9.13 by bfesser]
|
|
|
Dr.Bob
International Hazard
Posts: 2750
Registered: 26-1-2011
Location: USA - NC
Member Is Offline
Mood: No Mood
|
|
There is an older discussion of tabletop NMRs on the technology section of the forum, a bit old now.
http://www.sciencemadness.org/talk/forumdisplay.php?fid=9
and go back a few pages. or just search NMR there.
But I am very amazed at what can be done now, I remember when T60's were considered great machines, and then new 90 Mhz machines came along and even
had floppy disk drives. Thanks to Picospin for starting to make it better and smaller.
Once someone makes a 45 MHz machine, then people will figure out how to improve it, that is the great part. Eventually we might have much better
small systems, but incremental change is sometimes part of the systems, so every little bit of improvement is great.
|
|
|
Polverone
Now celebrating 21 years of madness
Posts: 3186
Registered: 19-5-2002
Location: The Sunny Pacific Northwest
Member Is Offline
Mood: Waiting for spring
|
|
I am just interested in the capabilities of the machines. The picoSpin 45 was around $20,000 when announced, which made it a cost breakthrough but
still out of my price range. I am guessing that the newer machines are at least as expensive. Some day I'd like to have something from this class of
machines, but I will have to wait until the second hand market is more developed or until there is more price competition among new models.
PGP Key and corresponding e-mail address
|
|
|
bfesser
Resident Wikipedian
Posts: 2114
Registered: 29-1-2008
Member Is Offline
Mood: No Mood
|
|
I'm waiting until they incorporate a miniscule GC-MS/NMR/HPLC/UV-Vis./FT-IR/STM/XRD/bag of chips on a chip into a cellular telephone.
Oh, and better throw in some lasers, as well—just in case. Who knows, maybe some day in the distant future you'll even be able to use a
cellular telephone to make an actual phone call—one where you can understand eachother!
|
|
|
pdm55
Harmless
Posts: 3
Registered: 9-4-2016
Member Is Offline
Mood: No Mood
|
|
Found this page comparing different benchtop NMRs
http://www.cbrnetechindex.com/Chemical-Detection/Technology-...
Prices range from $13 for SpinnSolve (Magritek), $30k for the picoSpin (ThermoFisher) to $65k for the Pulsar (Oxford Instruments).
[Edited on 9-4-2016 by pdm55]
|
|
|
| Pages:
1
2 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
