"SPIN-OFF"Protective Tip... M F E Corp. Keewaydin Dr., Salem, N.H. 03079. Digital tape and ticket printers, galvanometric and potentiometric strip chart recorders, X-Y recorders, digital cassette tape transports, buffered data terminals, optical scanning, torque and pen motors. MG Scientific Gases 210 Cougar Ct., Somerville,
N.J.
pH Combination Electrode
08876.
Micro Materials Corp. 700 Grand St., Westbury, N.Y. 11590. Com plete line of grinding and sieving equipment; Microjet 10 ultracentrifugal mill for plastics, grains, and foodstuffs; Microjet 2 rotor mill for high-speed milling; Microjet 6 planetary ball mill. Micromeritics Instrument Corp. 5680 Goshen Springs Rd., Norcross, Ga. 30093. Microprocessor-controlled a u t o in jector for LC; automatic wet sieving analyzer for particle size analysis; automatic helium air pycnometer; mercury penetration porosimeter; powder characteristics tester; particle size, surface area, and electrophoretic masstransport analyzers; fixed wavelength and RI detectors.
Midwest Instrument Co., Inc. 612 Lake 53018.
St.,
Box
206, Delafield,
Wis.
Millipore Corp. Bedford, Mass. 01370. Milli-RO and Milli-Q water purification systems.
Mine Safety Appliances Co. 600 Penn. Center Blvd., Pittsburgh, Pa. 15235. CO alarm, LIRA infrared analyzers, continuous T H C / m e t h a n e monitor.
MKS Instruments, Inc. 22 Third Ave., Burlington, Mass. 01803. Baratron capacitance manometer pressureflow measurement and control instrumen tation, capacitance manometers. Molectron Corp. 177N. Wolfe Rd., Sunnyvale,
For Quick Easy Cleaning
...from Graphic Controls
Sealed Construction . . . Electrodes never need refilling. Virtually unbreakable, these unique p H Elec t r o d e s are p a r t i c u l a r l y valuable for dirty applications w h e r e lint, fibers, oil, grease o r suspended solids are present. See us at the Pittsburgh Conference Booth No. 5101512
Graphic Controls Recording Chart Division P.O. Box 1271 Buffalo, New York 14240
CIRCLE 90 ON READER SERVICE CARD
THINKING SERIOUSLY ABOUT LIGHT SCATTERING?
Calif. 94086.
Molecular Data Corp. 2869 Scarborough Rd., Cleveland Heights, Ohio 44118. X-ray fluorescence systems in corporating high-efficiency x-ray monochromators; single-element and energy-dis persive systems; specific applications to clinical and environmental analyses; special designs, research, development, evaluation, and consulting for analytical ( X R F , X E S , X E D , and single-crystal X R D ) , industrial (inspection and environmental), and medical (diagnostic, therapeutic, and clinical) appli cations; full line of x-ray tubes and highvoltage accessories.
1
ΤΗΛ SERTÊ ABWt
CNIW/QWD1
Molecular Separations, Inc. Box 206, Monroeville,
•
Pa. 15146.
Monroe Calculator Co. The American 07950.
Rd., Morris
Plains,
N.Y.
•
Nametre Co. 272 Loring Ave., Edison, N.J. 08817. Direct readout viscometer, variable shear rate vis cometer, drybath. Neotec Instruments 2431 Linden Lane, Silver 20910.
•
Spring,
Md.
Neslab Instruments, Inc. 871 Islington St., Portsmouth, N.H. 03801. Exacal constant temperature baths/circula tors, CryoCool vacuum/vapor trap coolers, Coolflow cold water recirculators, tempera ture-controlled liquid systems.
•
MONOPHOTOMETER (Single Detector) DUOPHOTOMETER (Two Detectors) DIFFERENTIAL REFRACTOMETERS ABSOLUTE CALIBRATION
AVAILABLE WITH MULTIPLE LIGHT SOURCES, CONSTANT TEMPERATURE SYSTEM, AUTOMATIC SCANNING, MANY ACCESSORIES. Call (215) 968-4268 or send tor literature and prices
C.N.
WOOD
MFG. CO.
Newtown Industrial Commons Route 332 • Newtown, Pa. 18940 CIRCLE 232 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 49, NO. 2, FEBRUARY 1977 · 173 A
