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Controlled-Potential Coulometer System Model 3 $4230 Modem Coulometry with Modem Instrumentation • Premium quality, solid-state • components for long-term I reliability and stability I · Simplified controls | · Direct readout(l volt = lmg) • Self-checking configuration • Modular, plug-in Potentio- stat and Integrator available separately • Negligible zero drifts φ 0.1% Accuracy and Precision with mg amounts of: Ag As Au Br~ Cd Cl~ Cr Cu Eu Fe H 2 0 2 | - In Ir Mn Mo Ni Nr Np Pb Pu Ru Sb Sn Tc Tl U V Zn Numerous organic compounds φ Preparative Electrolysis 4> Mechanistic and Formal E° Studies • Condensed Specifications: POTENTIOSTAT—Output: ± 24V, ± 400mA, Ζ = 1 ohm DC O.L. Gain = 10 5 , f c = 750kHz, adjustable response Zero Stability: ± 0.5 mV long term INTEGRATOR—Ranges: 1.9 and 19 coulombs Drift: ± 0.5 mV/15 min., stable long term Calibration Stability: ± 0.1%/year M-T ELECTRONICS CO. 536-A Levelling Blvd. San Leandro, Calif. 94579 Phone 415/357-5262 CIRCLE 142 ON READER SERVICE CARD Have we got a line (recorder line, that is) to hand you ! I ESTERUNE ANGUS Ask for your free copy of our new complete line catalog describing 30 recorder families in all. Just drop us a line. Box 24000, Indianapolis, Indiana 46224. Or call 317/244-7611. ESTERLINE ANGUS Division of Esterline Corporation Data Recording Instruments CIRCLE 63 ON READER SERVICE CARD ESTERLINE Hellma—the largest assortment of highest precision glass and quartz cells. Standard · Flow-through • Constant-temperature Anaerobic · Special Designs Also available-ULTRAVIOLET LIGHT SOURCES Deuterium Lamps · Mercury Vapor Lamps Hollow Cathode Lamps · Power Supplies VERSATILE DESICCANT DRIERITE is α low-cost, all-purpose anhydrous calcium sulfate used in desiccators, U-tubes, drying columns, drying tubes and large drying cabinets to dry air and gases. DRIERITE is also ideal for drying organic liquids in either the liquid or vapor phase. The moisture remaining in a gas after drying with DRIERITE amounts to only 0.005 mg per liter. DRIERITE is available in two forms—Regular or Indicating—from all leading Laboratory Supply Dealers. REGULAR DRIERITE is constant in volume, inert except toward water, insoluble in org anic liquids and refrigerants, non-disintegrating non-wetting, non-poisonous, non-corrosive, re- peatedly regenerative, and non-channeling. INDICATING DRIERITE has all of the properties of Regular DRIERITE, but is impregnated with C.P. cobalt chloride and, hence, makes a clearly visible change from blue when dry to pink when exhausted. Write for literature Box 544 Borough Hall Station Jamaica, New York 11424 Phone (212) 544-9534 W. A. HAMMOND DRIERITE CO. Xenia, Ohio 45385 CIRCLE 97 ON READER SERVICE CARD 94 A • ANALYTICAL CHEMISTRY, VOL. 44, NO. 12, OCTOBER 1972 4-1ELLMA ... tomorrow's designs today! OS" QH* QS* OF" QU" Ql ' CELLS, INC. HELLMA DRIERITE SOLIDSLIQUIDS-GASESSOLIDS-LIQUIPS-GASES-SOLIDS UJ Ο •Λ a ο Οι a nos-5 3sv9-sainon-s<ino$-s3sv3-s<nnon-s<ino ό > «ή ® CIRCLE 98 ON READER SERVICE CARD
Transcript of Advertisement/Classifieds
Controlled-Potential Coulometer System Model 3 $4230
Modem Coulometry with Modem Instrumentation
• Premium quality, solid-state • components for long-term I reliability and stability I · Simplified controls | · Direct readout(l volt = lmg)
• Self-checking configuration • Modular, plug-in Potentio-
stat and Integrator available separately
• Negligible zero drifts
φ 0.1% Accuracy and Precision with mg amounts of: Ag As Au Br~ Cd Cl~ Cr Cu Eu Fe H202 | - In Ir Mn Mo Ni Nr Np Pb Pu Ru Sb Sn Tc Tl U V Zn Numerous organic compounds
φ Preparative Electrolysis 4> Mechanistic and Formal E° Studies
• Condensed Specifications: POTENTIOSTAT—Output: ± 24V, ± 400mA, Ζ = 1 ohm
DC O.L. Gain = 105, fc = 750kHz, adjustable response Zero Stability: ± 0.5 mV long term
INTEGRATOR—Ranges: 1.9 and 19 coulombs Drift: ± 0.5 mV/15 min., stable long term
Calibration Stability: ± 0.1%/year
M-T ELECTRONICS CO. 536-A Levelling Blvd.
San Leandro, Calif. 94579 Phone 415/357-5262
CIRCLE 142 O N READER SERVICE CARD
Have we got a line (recorder line, that is)
to hand you ! I ESTERUNE ANGUS
Ask for your free copy of our new complete line catalog descr ib ing 30 recorder famil ies in all. Just drop us a l ine. Box 24000, Indianapolis, Indiana 46224. Or call 317/244-7611.
ESTERLINE ANGUS Division of Esterline Corporation
Data Recording Instruments CIRCLE 63 O N READER SERVICE CARD
ESTERLINE
Hellma—the largest assortment of highest precision glass and quartz cells. Standard · Flow-through • Constant-temperature Anaerobic · Special Designs Also available-ULTRAVIOLET LIGHT SOURCES Deuterium Lamps · Mercury Vapor Lamps Hollow Cathode Lamps · Power Supplies
VERSATILE DESICCANT DRIERITE is α low-cost, al l -purpose anhydrous calcium sulfate used in desiccators, U-tubes, drying columns, drying tubes and large drying cabinets to dry air and gases. DRIERITE is also ideal for drying organic liquids in either the l iquid or vapor phase.
The moisture remaining in a gas after dry ing with DRIERITE amounts to only 0 .005 mg per liter.
DRIERITE is avai lab le in two forms—Regular or Indicat ing—from all leading Laboratory Supply Dealers.
REGULAR DRIERITE is constant in volume, inert except toward water , insoluble in org anic liquids and refr igerants, non-disintegrating non-wett ing, non-poisonous, non-corrosive, repeated ly regenerat ive, and non-channeling.
INDICATING DRIERITE has al l o f the propert ies of Regular DRIERITE, but is impregnated with C.P. cobal t chloride and, hence, makes a clear ly visible change f rom blue when d ry to pink when exhausted.
Write for literature Box 544 Borough Hall Station Jamaica, New York 11424 Phone (212) 544-9534
W. A. HAMMOND DRIERITE CO. Xenia, Ohio 45385
CIRCLE 97 ON READER SERVICE CARD 9 4 A • ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 12, OCTOBER 1972
4-1ELLMA . . . tomorrow's designs today!
OS" QH* QS* OF" QU" Ql '
C E L L S , I N C . HELLMA DRIERITE
SOLIDSLIQUIDS-GASESSOLIDS-LIQUIPS-GASES-SOLIDS UJ
Ο
•Λ a ο Οι a
nos-5 3sv9-sainon-s<ino$-s3sv3-s<nnon-s<ino
ό > «ή
® CIRCLE 98 O N READER SERVICE CARD
