HYDROGEN PEROXIDE
50% NEW, SAFE, DIS POSABLE PACKAGE . . .
Polyethylene bottle, plastic bag; eco n o m i c a l , s a f e , ICCapproved. FISHER CERTIFIED REAGENT
Product Capsules
determine
equipment washed by machine. Alconox, Inc., 853 Broadway, Ν. Υ. 3, Ν. Υ.
DUST PARTICLE
Π 1Α
Pencils, Marking. Circle 94A-1 for sample of laboratory marker available in 4 brilliant colors. Withstands tem peratures up to 300° C. Blaisdell Pen cil Co., Bethayres, Pa. 94A-1
SIZE DISTRIBUTION below 60 microns
Plastic Label Tape. Circle 70A-4 for samples and prices of Labelon plastic label tape. Labelon Tape Co., Inc., 450 Atlantic Ave., Rochester 9, Ν. Υ. 70A-4
Spectrogram Catalog. Information available on the Sadtler standard spec tra, midget edition, a collection of 13,750 usable organic compounds in dexed by ASTM-IBM cards. Sadtler Research Laboratories, 1517 Vine St., Phila. 2, Pa. 103A-2
Means high p u r i t y ; actual lot analysis clearly listed on each bottle.
F a FISHER CERTIFIED REAGENT Unusually high concentration, ultra high-purity, and stability are three features that organic and inorganic chemists will immediately notice in using Fisher Certified Hydrogen Per oxide 50%. There is also a money-sav ing feature . . . higher strength means that chemists use less. Organic chemists will find this im portant reagent especially useful for organic oxidations . . . water is formed instead of active by-products. T h e high-purity provides many in organic uses, such as purifying beryl lium for nuclear work or as a reducing agent with permanganates, dichromates, and eerie salts. Fisher Certified Hydrogen Peroxide 50% is available direct from stock. Catalog N o . H-341. B-80a A TECHNICAL DATA SHEET
is yours for the asking. Write to 100 Fisher Building Pittsburgh 19, Pa.
Product Capsules . . . an AC service for subscribers Presenting short "refreshers" on last month's ads in order to help you obtain free information of value to both you and your company
Micro-Particle Classifier No. 6000 with totally enclosed 220 volt, 3 phase motor operates at 3500 rpm. 16" high χ 16Υ2" diameter
with the DIETERT-DETROIT MICRO-PARTICLE CLASSIFIER Quickly determine sub-sieve particle sizes with scientific accuracy. The No. 6000 DietertDetroit Micro-Particle Classifier is widely used throughout industry for pre-testing dust col lector needs, for determining the separating efficiency of air cleaners, for particle size control in many industrial processes and for scientific studies of fine materials. Mineral flours, metal powders, abrasives, fly ash, chemicals, drugs, etc., can be classified into eight fractions below 60 microns, (materials above 60 microns can be retained for sieve analysis). An eight-fraction analysis can be completed at the rate of 15 minutes per fraction by unskilled operators. Fractions are precisely defined and may be retained for accurate study. Gentle sifting action prevents particle fracture—assures accuracy and reproducibility. 8-page catalog mailed on request
HARRY W. DIETERT CO. CONTROL EQUIPMENT 9330 Roselawn
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Detroit 4. Michigan
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