GTREATLY IMPROVED SENSITIVITY NOW IN NMR & EPR - C&EN

Nov 6, 2010 - GTREATLY IMPROVED SENSITIVITY NOW IN NMR & EPR. Chem. Eng. News , 1964, 42 ... Publication Date: May 04, 1964. Copyright © 1964 ...
0 downloads 0 Views 910KB Size
GTREATLY IMPROVED SENSITIVITY NOW IN

NMR & EPR With the new C-1024 Time Averaging Computer accessory for Varian spectrometers, sensitivity is essentially limited only by the time you want to invest. Here's how it works: During the data accumulation period, resonance information is converted into digital counts and stored in the computer's 1024-channel ferrite-core memory. Subsequent scans are then synchronized with the memory address so that signals are added coherently. Noise, however, accumulates randomly, and is averaged by the computer, resulting in an improvement of the signal-to-noise ratio equal to the square root of the number of scans taken. There is no theoretical limit; one extended laboratory experiment actually improved the ratio by 50 times! Varian's C-1024 computer is manufactured according to Varian specifications bv the Mnemotron Division of Technical Measurement Corporation.

VARIAN ASSOCIATES

ANALYTICAL INSTRUMENT DIVISION 611 HANSEN WAY, PALO ALTO 28, CALIF.

APPLICATIONS

FEATURES

• Permits analysis of extremely small samples



• Investigates solubility-limited compounds

• Fast response (25insec/channel)

• Detects short-lived free radical intermediates

• Storage capacity > 105 counts/channel

• Studies free radical kinetics at room temperature



Built-in electronic sweep

• Converts spectral information to digital form



Built-in oscilloscope

• Clarifies complex patterns, aiding spectral interpretation



Binary or analog output

1024 channels

PLEASE SEND ME INFORMATION ABOUT: Π N M R Spectrometers with C-1024 Time Averaging Computer Π E P R Spectrometers with C-1024 Time Averaging Computer Π The C-1024 as an accessory for my spectrometer NAME

TITLE

DEPARTMENT

Send this coupon now for more information to : SPECTROSCOPY PRODUCT GROUP VARIAN ASSOCIATES 611 HANSEN WAY PALO ALTO 28, CALIFORNIA IN EUROPE: VARIAN A.G., ZUG, SWITZERLAND

COMPANY ADDRESS CITY

STATE

ZIP__