A COMPLETE L I N E OF ACCESSORIES F O R T H E
Beckman IR-4 Spectrophotometer MOST VERSATILE INSTRUMENT IN INFRABED T h e B e e k m a n IR-4 automatic recording infrared s p e c t r o p h o t o m e t e r a d d s a new dimension t o infrared spectroscopy. E x c l u s i v e double-beam double-monochromator s y s t e m provides u n s u r p a s s e d r e s o l u t i o n a n d f a s t e r recording speeds . . . virtually eliminates s t r a y l i g h t . Push-button controls permit t h e spectroscopist to c o n c e n t r a t e o n interpretation in stead o f operation. Horizontal recorder keeps t h e e n t i r e spectrum i n v i e w at. all times. A n d n o w this new dimension in infrared spectroscopy i s m a d e even broader w i t h t h e IR-4's c o m p l e t e line o f accessories.
recording accessories
OPTIC
Microbeam Condenser
S A M P L E HANDLING EQUIPMENT
% " K B r Die
Micro Solid S a m p l e Holder
SPECIAL ACCESSORIES
For complete information on the Beckman IR-% Spectrophotometer and the complete line of IR-ί accessories, write for Data File L-34-13. Visit Booth 333 — Chemical Show — N. Y. C , Dec. 2-6
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AUXILIARY RECORDER AND ATTACHMENT permits recording: of standard spectra in reduced size simultaneously on McBee cards, IBM cards o r intermediatesize charts. Cards are particularly valuable for easy cataloging· and rapid identification of spectra. Intermediate charts can record absorbance while IR-4 is recording in transmittance, if linear absorbance attachment i s used. LINEAR ABSORBANCE ATTACHMENT allows recording in either percent trans mittance or absorbance. Both data presentations can b e obtained simulta neously if auxiliary recorder and attachment i s used. INTERCHANGE ASSEMBLIES include two prisms, base casting·, prism mounts, Littrow mirrors, wavelength cam, slit program potentiometer—all assembled and aligned. Extra interchange assemblies supplied with thermostaticallycontrolled heated storage boxes to maintain t h e assemblies at instrument temperature. Thus, there is n o waiting period for temperature stabilization after changing" optical assemblies. Interchange requires only 2 to 3 minutes. Delivered :omplete and ready to install. Available : Cesium Bromide, Sodium Chloride, Potassium Bromide, Calcium Kluoride, Lithium Fluoride. MICROBEAM CONDENSER minifies the beam size in t h e sample path — useful when studying" micro-samples. Has KBr lenses and focusing element. Align ment i s positive and reproducible without adjustment. SPECULAR REFLECTANCE ATTACHMENT i s used for t h e determination of specular reflectance of surfaces, films and coating-s. ENTRANCE BEAM POLARIZER, available on special order, polarizes the entrance beam t o facilitate the study of fibres, films and crystals. LIQUID CELLS with interchangeable parts are economical to order and stock. Standard sealed liquid cell and 3 χ 25 mm micro-cell use same metal "bodies, windows and gaskets. All metal parts of passivated stainless steel; filling hole plugs of teflon. Micro-liquid cells require only 0.002 ml of sample. GAS CELLS, two models available : 10 cm cells with glass bodies, multi-reflection (folded path) cells for long path studies or minute gas concentrations. DEMOUNTABLE CELLS provide plate holder for films, one and/or two singlethickness plates, and double-thickness compensating plates. WEDGE CELL provides solvent compensation with maximum simplicity and convenience a t minimum cost. SOLID SAMPLE HOLDER holds 1 x 5 inni KBr pellets and solid films. KBr DIES AND PELLET HOLDERS for analysis of solids for which suitable solvents are not available, or because other factors necessitate solid phase infrared measurements. For micro-samples, a y^" KBr Die produces pellets that re quire a s little as 6 mcgm of sample and can b e used without micro-optics. Also available are dies for producing· 5 x 2 5 mm pellets, V2 " plates ( both usable without micro-optics) and 1 x 5 m m pellets f o r use with beam condenser. WINDOW POLISHING KIT contains all necessary materials and instructions. Kit can be used with all sample cells, since same windows are used in liquid, demountable and micro-liquid cells.
Beckman
Scientific Instruments
Division
2500 Fullerton Road. FttZlerton. California a division of Beckman I-nstrumenta, Inc.
