New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Phoenix Precision Instrument Co.* Precision Scientific Co.* Ε. Η. Sargent & Co.* Scbaar & Co. Carl Schleicher & Schuell Co.* Scientific Glass Apparatus Co. Standard Scientific Supply Co. W. A. Taylor & Co., Inc.* Tenso-Lab, Inc. Arthur H. Thomas Co. Wilkens-Anderson Co. Will Corp. 279. WATER PURIFICATION EQUIPMENT Barnstead Still & Sterilizer Co.* Burrell Corp. Cole-Parmer Instrument & Equipment Co. Fischer & Porter Co.* Emil Greiner Co. Illinois Water Treatment Co.* Arthur S. LaPine & Co. Millinore Filter Corp.* Precision Scientific Co.* E. H. Sargent & Co. Schaar & Co. Scientific Equipment Co. Scientific Glass Apparatus Co. Standard Scientific Supply Co. Tenso-Lab, Inc. Wilkens-Anderson Co. WEIGHTS—see balances WHEATSTONE boxes
BRIDGE—see
resistance
276. WIRE Burrell Corp. Fisher Scientific Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Arthur S. LaPine & Co. Metal & Controls* New York Laboratory Supply Co. Oregon Metallurgical Corp.* Palo Laboratory Supplies, Inc. E. H. Sargent & Co. Schaar & Co. Scientific Glass Apparatus Co. Standard Scientific Supply Co. W. M. Welch Manufacturing Co. 277. X-RAY EOUIPMENT Applied Research Labs* Chicago Apparatus Co. General Electric Co.* High Voltage Engineering Corp.* Jarrell-Ash Co.* Philips Electronics, Inc.* Tracerlab, Inc. ZONE REFINER—see refiner, zone
CHEMICALS AND MATERIALS 278. ABRASIVES Norton Co.* 279. ABSORBENTS, CHROMATOGRAPHY Aloe Scientific Division of A. S. Aloe Co. American Hospital Supply Corp. Burrell Corp. Chicago Apparatus Co. Davis Instruments Ealing Corp. F 8. M Scientific Glassware Co. Fisher Scientific Co. Floridin Co.* General Laboratory Supply Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Jarrell-Ash Co.* Johns-Manville Corp.* Loe Engineering Co. Mallinkrodt Chemical Works* Merck & Co.* Microchemical Specialties New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. Research Specialties Co. E. H. Sargent & Co. Carl Schleicher & Schuell Co.* Scientific Glass Apparatus Co. Standard Scientific Supply Co. Arthur H. Thomas Co. Wilkens-Anderson Co. Will Corp. 280. ABSORBENTS, FILTRATION Aloe Scientific Division of A. S. Aloe Co. Floridin Co.* Harshaw Scientific Division of Harshaw Chemical Co. Johns-Manville Corp.* Merck & Co.* New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. E. H. Sargent & Co.
Carl Schleicher & Schuell Co.* Scientific Glass Apparatus Co. Arthur H. Thomas Co. 281. ABSORBENTS, GAS Burrell Corp.* Chicago Apparatus Co. Eastman Kodak Co.* Fisher Scientific Co. Floridin Co.* General Laboratory Supply Co. Emil Greiner Co. Hartman-Leddon Co., Inc.* Mallinkrodt Chemical Works* New York Laboratory Supply Co. E. H. Sargent & Co. Scientific Glass Apparatus Co. Arthur H. Thomas Co. 282. ACIDS, INORGANIC Aloe Scientific Division of A. S. Aloe Co. American Hospital Supply Corp. Baker-Adamson Products* Div. of Allied Chemical Corp. Chemical Rubber Co. Chicago Apparatus Co. Fisher Scientific Co. General Laboratory Supply Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Hartman-Leddon Co., Inc. Arthur S. LaPine & Co. Mallinkrodt Chemical Works* New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. E. H. Sargent & Co. Scientific Glass Apparatus Co. Standard Scientific Supply Co. Tenso-Lab, Inc. Arthur H. Thomas Co. W. M. Welch Manufacturing Co. Will Corp. 283. ACIDS, ORGANIC Aloe Scientific Division of A. S. Aloe Co. American Hospital Supply Corp. Baker-Adamson Products Div. of Allied Chemical Corp. J. Bishop & Co. Platinum Works* Chemical Rubber Co. Chicago Apparatus Co. Ealing Corp. Eastman Chemical Products Eastman Kodak Co.* Fisher Scientific Co. General Laboratory Supply Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Hartman-Leddon Co., Inc. Arthur S. LaPine 8, Co. Mallinkrodt Chemical Works* Matheson Co., Inc.* Merck & Co.* New York Laboratory Supply Co. Palo Laboratory Supplies, Inc. E. H. Sargent & Co. Scientific Glass Apparatus Co. Standard Scientific Supply Co. Tenso-Lab, Inc. Arthur H. Thomas Co. W. M. Welch Manufacturing Co. Will Corp. 284. ADHESIVES Eastman Chemical Products Fisher Scientific Co. fmil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. E. H. Sargent & Co. Scientific Glass Apparatus Co. Arthur H. Thomas Co.
N0W...ACCURATE TEMPERATURE DATA With
1 1ν£ΛΛ11_ίΓΎ1>*_1-Ι_
THERMISTOR THERMOMETER • ACCURACY: 70°C/range 20°C/range - 50° to 50°C ±0.7°C ±.15°C + 50°tol00°C ±1.0°C ±.2°C + 100°to200°C =fcl.5°C ±.3°C Readability .25° .1° • FASTEST RESPONSE: time constant: .75 seconds in liquids; 2.2 seconds on surfaces. • ONE HUNDRED INTERCHANGEABLE PROBES, TWENTY-SIX INSTRUMENTS Readings between —328°F to 845°F or C equivalent. • BATTERY POWERED, as pictured, or AC models (portable or pane] mountable). • STABLE EUROPEAN THERMISTOR resist ance element, bridge circuit and amplifier. USED BY G . E., duPont, Westinghouse, etc.
OFFER COMPLETE $18022
ATKINS TECHNICAL, INC. 1 2 7 6 W e s t T h i r d Street Cleveland 13, O h i o
·
T e l e p h o n e : SU 1-1333
Circle Nos. 55 A-1, 55 A-2 on Readers' Service Card
Now in Use in Thousands of Labs!
PROPIPETTE The
safe
Pipette
accurate Filler
for
285. ALLOYS, SPECIAL J. Bishop & Co. Platinum Works* Harshaw Scientific Division of Harshaw Chemical Co. Metals & Controls* Oregon Metallurgical Corp.
Isotopes, Cyanides,
286. BATTERIES National Carbon Co.
Solutions
287. BUFFER TABLETS Aloe Scientific Division of A. S. Aloe Co. American Hospital Supply Corp. Burrell Corp. Chicago Apparatus Co. Coleman Instruments Co., Inc.* Fisher Scientific Co. General Laboratory Supply Co. Emil Greiner Co. Harshaw Scientific Division of Harshaw Chemical Co. Arthur S. LaPine & Co. New York Laboratory Supply Co. E. H. Sargent & Co. Scientific Glass Apparatus Co. Standard Scientific Supply Co. Tenso-Lab, Inc. Arthur H. Thomas Co. Wilkens-Anderson Co. Will Corp.
Instrument as pictured, °F or °C. Temperature range; overlapping: Model #4412F Mode! #4412C Scale I . . 3 2 ° t o . 5 8 ° F . . 0° to 70°C Scale II . . 1 5 8 ° t o 2 8 4 ° F . . 70° to 140°C Scale III . . 2 8 4 ° t o 4 1 0 ° F . . 1 4 0 ° t o 2 I 0 ° C with one probe, choice of . . . #H10AO stainless steel for surfaces #H01AF glass tipped for liquids #H12AF stainless steel needle
INTRODUCTORY
Acids, Bacteria a n d Other
Dangerous
This amazing new instrument is now standard equipment in government, medical and industrial laboratories throughout the nation. Offers more precise measurement ( t o 0.01 cc), more complete control, and avoids all t h e risks of mouth pipetting. Holds set level indefinitely, fits any pipette, operates easily with one hand. Order a supply of P R O P I P E T T E S now, $6.90 each.
INSTRUMENTATION
ASSOCIATES
17 West 60th Street, New York 23, Dept. R-49 Send for current list of new scientific instruments Circle No. 86 A on Readers' Service Card VOL. 3 1 , NO. 4, APRIL 1959 ·
53 A
