General Electric Company

stir up to 5,000 centi- poises with either churning or slow and gentle actions. STEPLESS STIRRING CONTROL. 60 to 1500 rpm for optimum stirring. PRACTI...
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Product Capsules Spectrometers, UV/VIS. Modular photometric system provides light sources, sample holders, and detectors. Solid-state. Catalog. Ρ 122 Spectrometers, x-ray. Info on over 1,000 different systems for x-ray energy spectrometry. Ρ 102

New!

General Electric announces a simple, reliable hydrogen generator for gas chromatographs • eliminates gas bottle storage and use problems • makes equipment portable • uses no caustic solutions W h e t h e r you're a manufac­ t u r e r of gas c h r o m a t o g r a p h s and flame ionization d e t e c t o r s , o r a laboratory man w h o uses s u c h equipment, you'll be interested in t h i s n e w GE h y d r o g e n generator — a technological descendant of the Gemini p r o g r a m fuel cell. It's c o m p a c t — less t h a n a cubic f o o t — a n d w e i g h s only 2 6 pounds. It's simple — needs no palladium diffuser t o c o n t r o l purity, and maintenance requirements are minimal. A d d only distilled w a t e r , and replace the desiccant c a r t r i d g e occasionally. It's reliable — long life is inherent in its solid polymer electrolyte. SPECIFICATIONS Size: 12x10x11" Weight: 26 lbs. Hydrogen Flow Rate: 0 to 1 50 cc/min. STP Delivery Pressure: 2 to 60 psig Pressure Control: 0.5% For m o r e i n f o r m a t i o n , w r i t e : Direct Energy Conversion Programs General Electric C o m p a n y 9 3 0 Western Avenue Lynn, Massachusetts 0 1 9 1 0 AIRCRAFT EQUIPMENT DIVISION

GENERAL

ELECTRIC 183-01

Spectrometers, x-ray. Simultaneous energy dispersive analysis of all ele­ ments from fluorine through uranium. Ρ 139

light box or stirrer ...or both!

Spectrophotometers, AA. Modular unit for exacting research needs or routine bulk analyses. Ρ 191 Spectrophotometers, IR. Line of automated instruments for forensic chemistry. Ρ 155 Spectrophotometers, IR. Unit has ca­ pability to far infared, has wide-range automatic gain and slit control systems. Ρ 156 Spectrophotometers, IR. flectance double-beam unit.

Total re­ Ρ 195

TYPE

2 I N 1 UTILITY Equally good as a light box or a magnetic stirrer, Stir-Light combines the best features

Spectrophotometers, Raman. Simpleto-operate unit can handle all aqueous samples, has wavenumber range of from Ρ 27 near 0 to 4000 Δ cm~ Spectrophotometers, UV/VIS. Fea­ tures include double monochromator, digitally coupled wavelength scan and chart drive, photometric accuracy of 0.001 at 1 absorbance. Brochure. Ρ 28

STIR-LIGHT

7200

of

both

uses

to

promote

accurate

and

speedy titrations, slide work or visual in­ spections.

POWERFUL STIRRING CONTROL Alnico magnets can stir up to 5 , 0 0 0 centipoises w i t h

either

churning

or

slow

and

gentle actions.

STEPLESS STIRRING CONTROL

Spectrophotometers, UV/VIS. Spec­ tral bandpass of 2 ταμ which is constant throughout range of 200 to 900 ταμ with wavelength accuracy better than 0.5 ταμ. Ρ 36

6 0 to

1500 rpm for optimum stirring.

PRACTICAL SIZE 7 " χ 7 " top promotes accuracy and elimin­ ates eye strain.

Spectrophotometers, UV/VIS. Ratiorecording unit with better than 0.1 nm resolution, better than 0.001 A baseline flatness, better than 0.001 A photo­ metric precision. Ρ 81

ATTRACTIVE Strong, perforated stainless steel case keeps top,

motor

heavy

Spectrophotometers, UV/VIS. 2 new units (one a meter readout, the other digital) feature simplicity, versatility, solid-state electronics. Ρ 193

has

dovetail

Supports

for

apparatus

mount. Model

Spectroscopic supplies. Catalogs on supplies for pH, TJV, IR, nuclear, GC, AA, and recording instrumentation. Ρ 20 Spectroscopy, Auger. Unit routinely determines in-depth composition pro­ files with depth resolution of 10 A and sensitivity of 0.1 atomic per cent. Ρ 148

and controls cool.

loads;

SL-7225_ (Price w i t h

_$75.00 2

stirring

W r i t e τοχ yLSSL

bars)

Catalog

THERMOLYNE

CIRCLE 7 2 O N READER SERVICE CARD

SYBRON CORPORATION 2555

KERPER

BOULEVARD,

DUBUQUE.

IOWA

52001

CIRCLE 1 8 4 O N READER SERVICE CARD ANALYTICAL

C H E M I S T R Y , VOL.

4 4 , NO. 3, M A R C H

1972

·

115 A