ANALYTICAL
CHEMISTRY
PRODUCT CAPSULES
For your convenience —short "refreshers" on last month's ads. Obtain free information on any of the products or services described by circling the corresponding key numbers in the "Product Capsules" portion of the reply card preceding this section.
Accessories. Infrared absorption cells for spectrophotometers. 14
Balances. Data on continuous recording French unit. 2
Collectors. Bulletin on continuous, refrigerated fraction units. 116
Acids. Data on reagent acids and ammonium hydroxide. 26
Balances. Details on new gram electrobalance. 40
Conductivity Equipment. line of electrolytic units.
Amplifiers. Data file on fast, sensitive, vibrating reed unit. 197
Blenders. Info on lab blender with 3 different mixing actions. 153
Crystals. Data on scintillation crystal radiation detectors. 61
Analyzers. Unit detects, continually records iron down to 0.001 p.p.m. 188
Blenders. Data on new safety-sealed aseptic unit. 101
De-Ionizers. Details on lab-size cartridge water de-ionizer. 117
Analyzers. New linear electroplating unit for current density study. 156
Bombs. Details on oxygen bomb sulfur apparatus. 152
Densitometric Equipment. For electrophoresis, chromatography. 193
Analyzers. Bulletin on automated carbon and hydrogen unit. 118
Buffer Tablets. Bulletin on tablets with 2.0 to 11.00 pH values. 12
Density Meters. Data file on new volume, density measuring unit. 17
Analyzers. Measures UV absorption of an cluate. Bulletin. 105
Cans. For dry, semi-liquid or liquid products. Details. 53
Desiccants. Data file on "Dricrite," a versatile desiccant. 59
Analyzers. Automatic protein and/or p>eptide analyses. 190
Centrifuges. Bulletin on automatic superspeed refrigerated unit. 164
Detectors. Bulletin on gamma and neutron detectors. 109
Analyzers. Compact unit provides chemical analysis in seconds. 133
Centrifuges. Details on new generalpurpose cabinetized unit. 130
Analyzers. Bulletin on rapid, automatic nitrogen analyzer. 15
Chromatographs. Data on gas unit and line of separate components. 191
Analyzers. Data file on automatic amino acid unit. 32
Chromatographs. Data file on new, highly sensitive gas unit. 29
Analyzers. Detects, continually records silica down to 0.001 p.p.m. 189
Chromatographs. Brochure on field covered by 5 different gas units. 7
Balances. unit.
Data on single pan Swiss 91
Chromatographs. Hydrocarbon analysis through flame ionization. 179
Balances. Bulletin on 1-pan analytical balance. 22
Chromatographs. Info on gas unit with wide temperature range. 69
Balances. Data on complete line of substitution units. 74
Chronographs. Catalog on line of chronographs and timers. 158
Balances. Bulletin on new moisture determination unit. 151
Classifiers. 8-page bulletin on microparticle classifier. 49
Balances. Bulletin on VDF micro torque balances. 37
Cleaners. Data on ultrasonic unit with automatic timer. 168
Balances. Facts on new dial balances with weight loaders. 170
Cleaners. Bulletin on new solid-state ultrasonic unit. 34
Data on 65
Detergents. For glassware, apparatus, instruments. 72 Dimethylformamide. Specs and applications of organic solvent. 73 Dosimeters. Catalog features hermetically sealed unit. 138 Electrodes. electrodes.
Details on 2 vacuum-cup 5
Electromagnets. Gauss at 1 kw.
12" unit.
14,000 6
Employment. For a physical scientist with advanced degrees. 177 Equipment. Data on protein determination line. 137 Fermentors. Catalog on fermentor drive assembly. 148 Filter Papers. Data on diversified line of filter products. 25 (Continued on page 134 A) VOL. 33, NO. 4, APRIL 1961
·
133 A
A DEMAND FOR M O R E . . .
SO NOW THERE ARE FOUR FOUR B A N T A M W A R E KITS The best m i n i a t u r e glassware—Bant a m w a r e . The best way to use it—in a B a n t a m w a r e Kit. A n d now t h e r e are f o u r d i f f e r e n t kits, for t h e exact s e t - u p you n e e d . Kit No. 1 has ball a n d socket t y p e joints on all inclined c o n d e n s e r connections. A second kit is t h e s a m e , except t h a t it has Teflon® instead of glass stopcock plugs on all a p p r o p r i a t e i t e m s . A t h i r d kit r e s e m b l e s Kit No. 1 b u t s u b s t i t u t e s s t a n d a r d t a p e r joints for ball and socket joints. T h e f o u r t h kit has t a p e r e d joints a n d Teflon stopcock plugs. There are over 4 0 glassware i t e m s in each kit—all y o u need for f r a c t i o n a tion, steam, atmospheric and vacuum distillation, c h r o m a t o g r a p h i c analysis, extraction, filtration, reflux and separation. Convenience a n d utility are p r o v i d e d in all B a n t a m w a r e Kits. Select one of t h e m for t h e exact c o m p o n e n t s y o u need for your laboratory. K-27010 The Original with Ball and Socket Joints$440.00 K-27011 The Original- w/Teflon Stopcocks $444.00 K-27012 A New K i t - Tapered Joints throughout $438.75 K-27013 The New Kit-w/Teflon Stopcocks $442.75
New 3 2 page B a n t a m w a r e catalog BW-2 now available. W r i t e for y o u r f r e e copy today. © E. I. Du Pont De Nemours & Co.
Product Capsules Filter Papers. Samples of and d a t a on analytical filter papers. 89 Flow Counters. Details on new M o n o Mol window unit. 180 Fluorescence Meters. Bulletin on lineoperated multiplier unit. 194 Fraction Collectors. Transistorized for chromatographic separations. 167 Fume Hoods. fume hoods.
bantam-ware® by KONTES GLASS CO. Vlneland . N . J .
D a t a on full line of lab 174
G o n i o m e t e r s . Optical unit identifies crystalline substances. 139 Hot Plates. Brochure designed electric unit.
on
Integrators. D a t a on mechanical, electronic, pneumatic units. 87 Ionization Kits. For ultra-high sensitivity gas chromatography. 104 Isotopes. Line of 300 radioactive and stable isotope products. 97 Leak Detectors. Brochure on sensitive leak test stations. 163 Lubricants. New "Teflon"-like purpose dry film lubricant. New
pen
•
Pick the exact size bath that fits your space and capacity requirements
•
Insist upon absolutely positive and 100% repeatable speed control — without interference from line voltage fluctuations
•
Specify guaranteed temperature uniformity (±0.5°C or better) over widest temperature range (ambient to 100°C)
•
Ask for instant stroke rate adjustability (from 40 to 200 oscillating cycles per minute)
•
Demand 1/2", 1 " , 1-1/2" optional cam settings—for greater variety of shaking actions or patterns
•
Be choosy about appearance —keep your laboratory the most modern and attractive
•
Reject all but the most sturdily built, double walled, stainless steel shaker baths . . . precision insulated and welded . . . equipped with ±0.1°C super sensitive hydraulic thermostat
newly140
Instruments. Circle 181, 182,183, 184, 185 for d a t a on new spectrophotometers. New t e m p e r a t u r e programmer, 186; new hydrocarbon detector, 187; " I n s t r u m e n t News," 196. 181, 182, 183, 184, 185, 186, 187, 196
Markers. surface.
DEMAND THE MOST... IN SHAKER BATHS
writes on
Microscopes. F r o m 17.5x to without step magnification.
all81 any 212 1940x 27
For Performance...For Results...For Pride of Ownership . . . why not insist upon the ABSOLUTE FINEST . . . at no extra cost? Be fussy! Get PRECISION Shaker Baths — be completely satisfied.
Microscopes. Interference unit measures optical p a t h difference. 31 Microscopes. Booklet stereomicroscopes.
on
precision 21
Mixers. Electronic controlled provides constant torque. Mixers. Bulletin on line of duty mixers and accessories.
unit 63
heavy146
Molecular Models. Booklet on new models for 3-dimensional studies. 4 2 Molecular Models. Kit supplementary atoms.
with
new 115 Since 1920
Neutron Sources. Van de Graaff accelerators provide neutron fluxes. 13 Nuclear Instruments. Catalog on proportional counting system. 78 Nuclear
Instruments.
liquid scintillation unit.
D a t a on new
Ill
N u c l e a r I n s t r u m e n t s . Details on autoCircle No. 134 on Readers' Service Card
134 A
·
ANALYTICAL CHEMISTRY
matic well counter.
PRECISION S C I E N T I F I C CO. 3 7 3 7 W E S T CORTLAND STREET CHICAGO 4 7 . ILLINOIS LOCAL OFFICES IN: CHICAGO · CLEVELAND HOUSTON · NEW YORK PHILADELPHIA · SAN FRANCISCO
155 Circle No. 84 on Readers' Service Card
Product Capsules Nuclear Instruments. Bulletin on a u t o m a t i c sample changer. 150
Pipets. New unit for one h a n d filling and discharge. 70
Reagents. Impurities held t h o u s a n d t h s of a percent.
Oil Distillates. Bulletin on applications, characteristics, prices. 114
Pipet Fillers. Safety bulb filler holds liquids indefinitely. 129
Reagents. Line features caps and labels.
Osmometers. determinations
Pipet Jars. New blow-molded " N a l gene" pipet jars. 75
Recorders. recorder.
Ovens. 2S0° C.
F o r molecular to 20,000.
New forced Brochure.
draft
weight 71 to 176
Polarographic Instruments. tals, organics, bio-chemicals.
For me10
with 64
Polarographic Instruments. on new recording unit.
Bulletin 88
unit
Ovens. Bulletin temps to 2000° F .
on
furnace
Ovens. Bulletin drying ovens.
on
chromatogram 76
Pumps. F o r column c h r o m a t o g r a p h y metering operations. 4
O v e n s . New furnace for dehydration and ashing functions. 93
Pumps. Folder on centrifugal positive pressure p u m p s .
Paints. Color-changing paint indicates thermal distribution. 198
Pumps. pumps.
Papers.
Purifiers. purifier.
D a t a on ion exchange papers. 86
P h o t o m e t e r s . Details on colorimeters and fluorimcters. 66
Details on line of
and 51
vacuum 84
Bulletin on new hydrogen 161
Quartz Lamps. Data model q u a r t z l a m p .
on
analytic 178 3
P h o t o m e t e r s . F o r measuring the diffused reflection of surfaces. 3
Radiochemicals. D a t a on line of H and C 1 4 chemicals. 171
P h o t o m e t e r s . F o r comparative or a b solute light measurements. 136
Reaction A p p a r a t u s . Brochure on interchangeable equipment. 107
HAEMO-SOL
A complete report plus technical data based on three years of research, on Haemo-Sol, the cleanser specifically formulated for precision laboratory glassware and apparatus, including metals, rubber and plastics. Over 05 years of continuous service to the hospitals of America
MEINECKE & COMPANY, INC. 229
V A R I C K STREET, NEW Y O R K 14
Circle No. 70 on Readers' Service Card
color-coded 50
on
linear/log 195
Recorders. D a t a file on new potentiornetric strip-chart unit. 18 Recorders. New flush mounting or portable integrating unit. 108 Recorders. Specs on portable potentiometer unit. 99 Refractometers. D a t a on lab, Abbe, and dipping units. 54 Refrigeration Units. R a n g e : to ambient. Catalog. Refrigeration Units. freeze-mobile.
100° F. 165
New, automatic 100
Regulators. Automatic voltage or current regulation. Catalog. 156 (Continued on page 136 A)
MODEL
4005 with
on "C.P." clean glassware and laboratory apparatus
"THIS IS
10112
Bulletin on new graphic 77
Recorders. Bulletin servo-recorder.
FOR T H E FACTS
send for
to
AMBITROL
CONSTANT VOLTAGE CONSTANT CURRENT with
PROGRAMMABLE CROSSOVER * ft ïl ^Qj" *^* r.o.t. FACTORY Other Models Available Write For Catalog *TM
Model 4005 is a 1-40 volt, 500 ma, regulated DC power supply incorporating AMBITROL.* The AMBITROL* circuit will switch automatically to either voltage regulation or current regulation at any point predetermined by the operator, with continuous control of voltage or current to .05%.
PowerDesignsinc. 1 7 0 0 SHAMES DRIVE WESTBURY, N E W YORK EDgewood 3 - 6 2 0 0 U D A r e a Code 5 1 6 ) Circle No. 146 on Readers' Service Card VOL.
3 3 , N O . 4 , APRIL 1901
.
135
A
Product Capsules Spectrophotometers. Data file on new DB high resolution UV unit. 19
Supplies. Encyclopedic apparatus and reagent catalog offered. 94
Spectrophotometers. Bulletin small unit and accessories.
on 28
Supplies. Supply house instrument catalog offered. 90
Spectrophotometers. Spectra repro ducible to .002. Brochure. 110
Supplies. New laboratory apparatus catalog offered. 44
Spectrophotometers. high resolution unit.
Data file on 30
Supplies. Info on full instrument and equipment line. 60
Sinks. Technical data on stone sink made to specs. 23
Standards. New samples for carbon and oxygen analyses. 68
Tanks. Catalog on fluid and gas pres sure tanks. 57
Solvents. New UV and IR transmittance chart offered. 147
Sterilizers. 16-page brochure illus trates complete line. 173
Tape. Pressure-sensitive time tapes and labels. 157
Spectra
162
Stirrers. Full details on economy and heavy duty stirrers. 213
Thermocouples. Catalog on sensitive spectrometer units. 24
Spectrometers. Bulletin on mass unit with Knudsen cell. 8
Stirrers. Data on borosilicate glass stirring shafts. 154
Timers. For precision interval timing. 45
Spectrometers. Automatic scintilla tion unit prints and resets. 85
Stirrers. Brochure on new heavy-duty stirrers. 166
Titrators. Catalog on new automatic recording unit. 35
Spectrometers. Complete specs on new NMR unit. 98
Stopcocks. Catalog on glassware with "Teflon" stopcocks. 48
Titrators. Data on the new Stone automatic unit. 80
Spectrometers. Bulletin on new me dium-priced mass unit. 46
Supplies. New catalog lists over 15,000 lab items. 149
Titrators. zero drift.
Spectrometers. Bulletin on transis torized liquid scintillation unit. 79
Supplies. Circle 95 for catalog on 20,000 items. 95
Titrimeters. New, automatic, potentiometric unit. 125
Resins. resins.
Data on new ion exchange 142
Resistance Filaments.
or straight kovar. Rheometers.
unit.
Helix tungsten 55
Data on new extrusion 39
Showers. Catalog drench showers.
Standards.
features
Data
safety 127
file
samples of standard spectra.
on
Custom Built
Automatic, accurate, no 141
,
CCA FRACTION COLLECTORS At Regular Prices • •
Automatic Cycle Indicator 2 4 " Diameter Turntables — 240 Tubes
•
No Overloading
•
Contamination Protection
• Corrosion Protection •
Lifetime Lubricated Drive Motoi
With accessory controls wired directly into cabinet, the Series 1000 CCA Automatic Fraction Collector is actually 4 collectors in 1 — Timed-Flow, Volumetric Siphon, Drop Counting, and Manual Control. In addition, large volume preparatory collecting can be done, it is adaptable to distillation apparatus, and fraction collecting can be performed with conventional distillation apparatus collected on the basis of volume and vapor temperatures of column. This versatile, easier-to-use, universally-accepted round continuous collector permits your choice of 9 0 ° or 180° in line sample dispensing and drop counting at 415, 4 7 0 , 530, 600 and 640 mu.
WILL
CORPORATION and subsidiaries
Rochester 3, N.Y. · New York 52, N.Y. · Buffalo 5, N.Y. Atlanta 25, Ga. · Baltimore 24, Md. · So. Charleston 3, W. Va.
Complete with totally enclosed cabinet and cover, automatic control panel and positioning mechanism, photo-electric volume controller, photo-electric light housing, 2 4 " dia. χ 240 hole turntable, 4 ' mast, and glassware includ ing delivery tube, diverter, float, volumetric siphon, etc. For 110 volts, AC, 50/60 cycles $850.00 WRITE FOR COMPLETE BULLETIN CHROMATOGRAPHY CORPORATION of AMERICA 1709 Morse Avenue
Circle No. 178 on Readers' Service Card
136 A
·
ANALYTICAL CHEMISTRY
*
Chicago 2 6 , Illinois
Circle No. 36 on Readers' Service Card
Product Capsules Tubing. 28-page bulletin on "Tygon" plastic tubing. 172 Tubing. Data on spaghetti tubing and monofilament. 20 Valves. Bulletin on high valve line. Viscometers. unit. Viscosimeters. rotary unit.
vacuum 135
Catalog on new 8-speed 38 Catalog on electrical 36
Ware, Ceramic. Bulletin on zircon boats and crucibles. 82 Ware,
Fused
Quartz.
"Vitreosil" labware.
Catalog on 92
"Ware, Glass. Circle 124 for catalog •on complete line. 124 "Ware, Glass. Details on full line of lime glassware. 192 Ware, Glass. Catalog on modern •glassware system. 121 "Ware,
Platinum.
New
catalog
platinum lab apparatus. Water. offered.
and/or
Peptide Analyses (Either Individual Samples or Column Effluent)
Quantitate... Total Nitrogen by Kjeldahl Total Protein by Biuret Total Protein by Folin—Ciocalteau (Lowry modification) Amino Groups by Ninhydrin Tyrosine by Folin—Ciocalteau Histidine by Pauly Diazo Reaction Arginine by Sakaguchi
on
33
Data on ultra pure water 62
X-Ray Gages. Emission gage moni tors up to 5 selected elements. 11 X-Ray Units. New diffraction spectroscopy brochure.
Automatic Protein
and 159
Glutamic Acid by Decarboxylase Lysine by Decarboxylase Albumin by HABA Dye [2-(4' hydroxyazobenzene) benzoic acid]
Analyze... Biological Fluids directly
Product Capsules
Effluent from DEAE or Resin Chromatographic Column Effluent from Poraeth Electrophoretic Column Electrophoretic Starch Block Fractions Electrophoretic Paper Chromatogram Segments Check point stages in Protein Fractionation Counter Current Distributions
an AC service for subscribers Presenting short "refreshers" on last month's ads in order to help you obtain free information of value t o both you and your company. Simply circle corresponding key numbers in t h e "Product Capsules" portion of t h e reply card on page H O B .
with the Τ Ε C Η Ν I C Ο Ν®
Any or all of these determinations may be run on the same AutoAnalyzer: Takes only two minutes to change from one type of analysis to another. Any combination may be run simultaneously from the same sample by adding additional standard AutoAnalyzer modules. The response time is such that most of the analyses may be run at 40 samples per hour. for information, select area of interest and write to
TECHNICON CHROMATOGRAPHY CORP. 52 R E S E A R C H P A R K · C H A U N C E Y , N E W Y O R K
Circle No. 156 on Readers' Service Card VOL. 33, NO. 4 , APRIL 1961
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1 37 A
