V O L U M E 2 1, NO. 7, JULY
Speedy
1949
· ^Jccutate.
CHEMICAL A N A L Y S I S
29A
NYLAB ELECTRIC STIRRER
• . . with the Evelyn PHOTOELECTRIC COLORIMETER For more than ten years this instrument has rendered outstanding performance in prominent domestic and foreign laboratories engaged in nearly every phase of chemical activity. Distin guished by almost classic simplicity of design, this instrument is noted for its sturdy and endur ing construction and for its unusual reliability and freedom from the mechanical and electrical deficiencies which can prove so costly in the efficient chemical laboratory. Because of the unique combination of accuracy, speed and simplicity of operation which it affords, the Evelyn Colorimeter is used to equal advan tage in both research and routine control labora tories. A detailed discussion of the design of this invaluable analytical tool is presented in our twelve-page Bulletin 460, available on request.
POWERFUL • 1/40 H. P., continuous duty motor • Fused to prevent burn-out if overloaded to stalling • Three-conductor lead for grounding • Rheostat and motor fan-ventilated • Rheostat controlled • Speeds: 0-6000 R.P.M. full load • 115 V . , A . C . - D . C • Stainless-steel stirrer, VA" dia. χ 8 " long, with 2 " propeller • Oil-impregnated sintered bronze bearings which do not require frequent oiling
PRECISION POTENTIOMETER PORTABLE
No.
22532
α , w o - d i a l instrument "of'exceptional accuracy and convenience. . Compact, self-contained
• Sturdy . Sensitive to within 2 rmcrovolts . Selection of ranges . Widely used for ther mocouple measurements
De:
scribed in Bulletin 270
RUBICON COMPANY Electrical Instrument Makers 3759 Ridge Avenue . Philadelphia 32, Pa.
NYLAB
ELECTRIC
STIRRER,
Model
1-A,
complete with chuck and stainless steel stirring shaft as described above, and 6 extra fuses Each $22.50 No. 22533
Stainless Steel Stirring Shafts, VA" dia. χ 8 " long with 2 " propeller
No. 22534
Fuses, 0.75 amp
NEW LABORATORY
Each $2.00 Per doz. $1.50
YORK
NYLAB SUPPLY CO., Inc.
76-78 V A R I C K STREET,
NEW YORK, Ν. Υ .
A complete line of laboratory apparatus and instruments
