I am planning to buy a FTIR for my research. I have JASCO 4600 (KBr Option) and Agilent Cary 630 (ZnSe Option). Which is the best?
JASCO is good to use in all the way to compare spectrum, to get spectral absorbence, and % T to Abs Conversion also. You can compare the purity % also.
Can you describe you experimental conditions like sample type, resolution etc.
From my experience I would strongly suggest Bruker FTIR. For resolution up to 1 cm-1, Alpha spectrometer, or Tensor spectrometer if higher resolutions are needed. In general the price for the instrument is higher but performance is much better as well.
Dear Prof.Ceponkus, Thanks for your reply. I am planning to analyze organic compounds and clays (by Diffuse Reflectance). I have limited budget.
Most likely your spectra will not need higher than 2 cm-1 resolution. My opinion the best choice would be Bruker Alpha spectrometer with DRIFT accessory. The standard configuration is for the 5000 - 350 cm-1 with 2 cm-1 resolution (optional 0,8 cm-1) room temperature DTGS detector. We have tried this spectrometer with DRIFT for paint structure of paintings analysis with high success. The big advantage that instrument can be easy transported.
Dear Prof.Ceponkus, I have JASCO FTIR with 0.7cm-1 resolution and Agilent Cary 630 with 2 cm-1 resolution. Cary 630 is a portable FTIR. Please help me in selecting one.
The two instruments are different. JASCO 4600 more universal and can be upgraded in the future. Agilent Cary 630 probably much cheaper. In general for you needs Agilent should be good enough. I would only ask for KBr or KRS5 windows instead of ZnSe as ZnSe has very high refraction index and stops transmission at 600 cm-1 while KBr are good down to 350 cm-1
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