What you can't see can hurt you. Don't be left in the dark about FT-IR instrument performance. It's important to understand what information lies beyond the standard 4000 to 400 cm- ' spectral range. Be aware that many systems lose energy at 400 cm-' and go non-linear beyond 4000 cm-'. Nicolet's the exception—our standard spectral range is from 7400 to 350 cm- ' which includes critical parts of the far and near-IR range. Without this extended range, important absorbances are unavailable for T ral quantitative or qualitative analysis. Î rateeT' from 7400 to 350cm- ' 4ÙO 3 ^ 0 withDTGS WRVENUMBER detectorand Nicolet Ge coated KBr beamsplitter. The band at 5778 cm - ' quantifies the major component of the polymer sample. The absorbances at 385 and 358 cm ~ ' confirm the identity of the inorganic additive.
For example, inorganics absorb below 400 cm- ' and the region above 4000 cm ' is especially important for quantitative analysis of high concentrations. Nicolet is able to control instrument performance because the critical spectrometer components are manufactured in-house. We grind, polish and coat our own beamsplitters to provide the widest spectral range and spectral purity available. Be confident that the information you are given meets your needs. Why confine yourself to a system that has limited spectral range? To see the most complete FT-IR system available, contact Nicolet or circle the reader service number to receive more information.
Nicolet INSTRUMENTS OF DISCOVERY
Attention to detail! 5225 Verona Rd. · Madison, WI537114495 TEL: 608/271-«« · FAX: 608/273-5046
CIRCLE 100 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 63, NO. 20, OCTOBER 15, 1991 · 969 A
