From Manostat s line of quality products... TURN SULPHURIC ACID INTO LABWARE CLEANER—INSTANTLY
Chromerge
®
No h o o d . N o gloves. No mixing with w a t e r . No boiling. Just pour a pre-measured bottle of C h r o m e r g e ® into a 9 lb. c o n t a i n e r of s u l p h u r i c a c i d for a super-efficient chromics u l p h u r i c s o l u t i o n that removes s t u b b o r n d e p o s i t s w h i c h resist other cleaners.
Lab Baths and Products. A 40-p cat alog describes the company's complete line of baths, circulators, lab instru ments, polpropylene balls, and fluidized baths. Techne, Inc. 609-452-9275 615 Glassblowing Catalog. A 4-p catalog of glassworking equipment and supplies includes lathes with accessories, cut-off machines and wheels, glassblowing kits, burners, torches, and other accessories and tools useful in glassblowing. Wale Apparatus Co. 215-838-7047 616
LIQUID DETERGENTBIODEGRADABLE, PHOSPHATE-FREE
Safe, g e n t l e a n d very effective n o n - i o n i c wetting agent and d e t e r g e n t w i t h neutral p H . It q u i c k l y removes surface film and grease. Mild Aquet® and strong Chromerge® make a complete labware cleaning t e a m . BULLETIN
Manostat products are available from your laboratory s u p p l y dealers
Manostat
20 N. M o o r e St. N e w York, N Y . 10013
CIRCLE 1 1 3 O N READER SERVICE CARD
From Manostat s line of qual ity products... SIMPLE WAY TO JOIN GLASS TUBING IN SECONDS
Manolok
11 \U,\ 11
Photographic Microscope System. A 36-p colorful brochure introduces the M41 Photoplan instrument. The sys tem is designed to meet the stringent requirements of a universal microscope in the modern research lab. Vickers Instruments, Inc. 617-324-6666 618
FURNACE
T r a n s p a r e n t Teflon® sleeves a n d positive seal O - R i n g s give you joints that are v a c u u m t i g h t , c o r r o s i o n and heat-resistant, f l e x i b l e a n d c o n t a m i n a t i o n free. You can b u i l d glass systems to your o w n r e q u i r e m e n t s in m i n u t e s , u s i n g s t a n d a r d t u b i n g . Or you can repair breaks in your present s y s t e m s . . . even j o i n glass of different wall t h i c k n e s s e s a n d d i a m e t e r s . M a n o l o k FlexconnectorrM adds v e r s a t i l i t y to your s y s t e m . Use it w h e r e there is m o t i o n or a n g l e c o n n e c t i o n s . It can be e x p a n d e d or c o m p r e s s e d .
BULLETIN
Manostat products are available from your laboratory supply dealers
Manostat 2 0 Ν M o o r e St.. N e w York, N Y 1 0 0 1 3 CIRCLE 1 14 O N READER SERVICE CARD
Type 1400 furnace
FAST HEAT For schools, shops or labs to 1650° f (899°C)
Disc Integrators. Bulletin DDI de scribes the company's Series 200 inte grator and automatic 610 printer. The 64 models of strip chart recorders made by 27 firms that can be fitted with a company integrator are listed on the back of the bulletin. Disc Instruments, Inc. 714-549-0345 619 Hollow Cathode Lamps. A 6-page cat alog contains detailed operating charac teristics for 68 single elements and most of the common multielement lamps for use in atomic absorption spectroscopy. The catalog features Hamamatsu lamps distributed exclusively by OCLI. OCLI Instruments. 203-853-2224 620
in 4 0 minutes.
PORTABLE Weighs
only
16 lbs.; plugs into
ordinary
outlets.
STEPLESS CONTROLS To
1900°F
( 1 0 3 8 ° C ) . Temperature
conven
iently and accurately held.
ELEMENTS EMBEDDED Exclusive
refractory
plates avoid
sag
and
damage.
QUALITY CONSTRUCTION Application Notes
ASK FOR DETAILED
a portable
pH Electrodes. A 4-p bulletin pre sents lab and industrial electrodes. Five basic designs in 12- and 18-mm di ameters including sealed combination electrodes are covered. Micro Sensors, Inc. 714-546-0039 617
Aquet
ASK FOR DETAILED
Manufacturers' Literature
Monochromators, 4 p, dispersive and nondispersive monochromators in ki netic spectrometers; comparisons and tabulations of relative efficiencies of dif ferent kinds of monochromators. Durrum Instrument Corp. 621
W e l d e d steel case w i t h thick insulation is strong,
long-lasting.
for long life.
Airborne particulate characterization, 2 p, details use of Differential II light scattering photometer to examine single particles, determine shape, size, and refractive index of air pollutants. Sci ence Spectrum, Inc. 623
kept
cool
w o r k loading shelf. Type 1300 -
chamber 4 " W χ 3 % " Η χ
4 ' / j " D. Type 1400 -
Kjeldahl titrations, 2 p, step-by-step procedure for calibration of Fisher titralyzer to determine nitrogen in vari ous materials. Fisher Scientific Co. 622
Controls
N e w l y designed door forms
6"
Price $123.00 chamber 4 % " W χ 4 14" Η χ
D.
Price $155.00
Write for
free
Catalog
THERMOLYNE SYBRON CORPORATION
2555 KERPER B O U L E V A R D . D U B U Q U E , IOWA 52001 CIRCLE 1 8 2 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 44, NO. 1, JANUARY 1972
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103 A
