McKEE-PEDERSEN INSTRUMENTS
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With an ISCO two channel O.D. recorder you can: • Monitor one column at both 254 and 280 σίμ. • O r t w o c o l u m n s a t either wavelength. • Or one column at two optical path lengths. • Or ratio record one column to compensate for elution gradients. A new accessory for ISCO quantita- tive dual-beam flow monitors pro- vides these applications. The Model 580Channel Alternator will fit all cur- rent ISCO dual-beam flow monitors and can be adapted to earlier models with slight modification. All ISCO UV flow monitors have an output calibrated in linear absorb- ance (0. D.). They have the narrow- est bandwidth available and one model will operate a fraction collector in such a way that separate UV ab- sorbing peaks are deposited in sep- arate tubes. They are available in single and dual-beam versions oper- ating at two discrete UV wavelengths and continuously throughout the visible spectrum. And they cost no more than most instruments having none of these features. Send for brochure UA3117 for further details. INSTRUMENTATION SPECIALTIES CO., INC. 4 7 0 0 SUPERIOR LINCOLN, NEBRASKA 0 8 5 0 4 PHONE (402) 434-0231 CABLE ISC0LAB LINCOLN Circle No. 35 on Readers' Service Card New Products and from your system with an electron- ically controlled drive to provide con- stant output regardless of system pres- sure. Cole-Parmer Instrument Co., 7425 N. Oak Park Ave., Chicago, 111. 60648. 424 Plastics Resistance Guide A pocket slide guide shows the effects of over 200 different chemical reagents on nine plastics resins including conven- tional and linear polyethylene, polypro- pylene, TPX, Teflon (Dupont), FEB, and polycarbonate. Effects at both room temperature and 52 °C are given. The guide also included a chart showing the plastics' physical properties, includ- ing temperature limits, autoclavability, transparency, flexibility, and specific gravity. Nalge Co., 75 Panorama Creek Dr., Rochester, N.Y. 14625 425 Universal Ovens A new standard line of 8-cubic-foot electric ovens is comprised of five units with maximum temperatures of 500, 650, 850, 1000, and 1250 °F. These ovens are designed for baking, drying, preheating, annealing, etc. They may be used as bench units or with legs. Standard features include temperature controller, blower and heater pilot lights, adjustable fresh air intake and exhaust dampers, and explosion venting latches. Grieve Corp., 1330 N. Elston Ave., Chicago, 111. 60622. 426 Model 1003 plasma machine features low temperature ashing. The appara- tus is capable of ashing up to 2.0 grams per hour at up to 300 watts of rf power. Simultaneous ashing is possi- ble through two large 3" by 6" cham- bers which provide space for 10-gram samples. Metered gas flow is precisely controlled so as not to disturb delicate samples. International Plasma Corp., 25222 Cypress Ave., Hayward, Calif. 427 CREATIVE it helps to have instruments capable of performing a wide variety of tasks. The versatile MP-System gives you the basic building blocks common to most electronic instruments. Interconnect the precision modules with patch cords and they will perform most electro- and photo- metric instrument functions.* NEED ASSISTANCE? Our 114 page manual answers most questions. It contains detailed descriptions, practical applications and set-ups. A new lab manual by L. P. Morgenthaler explains operational amplifiers and their use in chemical instrumentation. In addition, the bi-monthly MPI Applications Notes keeps you up-to-date on new uses. ECONOMICAL Simplicity, solid state circuitry and good design have been combined to permit the lowest price consistent with high performance. *coulometry, polarography, pH titrations, spectrophotometry, colorimetry, filter fluorometry, conductimetry, temperature measurement, etc. BOX 322, DANVILLE, CA 94526 Circle No. 39 on Readers' Service Card 94 A · ANALYTICAL CHEMISTRY when you need to be ISCO MPI McKEE- PEDERSEN INSTRUMENTS
Transcript of McKEE-PEDERSEN INSTRUMENTS
With an ISCO t w o channel O.D. recorder
you can: • Monitor one column at
both 2 5 4 and 2 8 0 σίμ. • Or t w o c o l u m n s a t
either wavelength.
• Or one column at two optical path lengths.
• Or ra t io r e c o r d o n e column to compensate for elution gradients.
A new accessory for ISCO quant i tative dual-beam flow monitors provides these appl icat ions. The Model 580Channel Alternator will f i t all current ISCO dual-beam flow monitors and can be adapted to earlier models with slight modi f icat ion. All ISCO UV flow monitors have an output cal ibrated in linear absorb-ance (0. D.). They have the narrowest bandwidth available and one model will operate a f ract ion collector in such a way that separate UV absorbing peaks are deposited in separate tubes. They are available in single and dual-beam versions operat ing at two discrete UV wavelengths and c o n t i n u o u s l y t h r o u g h o u t t h e visible spectrum. And they cost no more than most instruments having none of these features.
Send for b r o c h u r e U A 3 1 1 7 fo r fur ther detai ls.
INSTRUMENTATION SPECIALTIES CO., INC. 4700 SUPERIOR LINCOLN, NEBRASKA 08504 PHONE (402) 434-0231 CABLE ISC0LAB LINCOLN
Circle No. 35 on Readers' Service Card
New Products
and from your system with an electronically controlled drive to provide constant output regardless of system pressure. Cole-Parmer Instrument Co., 7425 N. Oak Park Ave., Chicago, 111. 60648. 424
Plastics Resistance Guide
A pocket slide guide shows the effects of over 200 different chemical reagents on nine plastics resins including conventional and linear polyethylene, polypropylene, TPX, Teflon (Dupont), FEB, and polycarbonate. Effects at both room temperature and 52 °C are given. The guide also included a chart showing the plastics' physical properties, including temperature limits, autoclavability, transparency, flexibility, and specific gravity. Nalge Co., 75 Panorama Creek Dr., Rochester, N.Y. 14625 425
Universal Ovens
A new standard line of 8-cubic-foot electric ovens is comprised of five units with maximum temperatures of 500, 650, 850, 1000, and 1250 °F. These ovens are designed for baking, drying, preheating, annealing, etc. They may be used as bench units or with legs. Standard features include temperature controller, blower and heater pilot lights, adjustable fresh air intake and exhaust dampers, and explosion venting latches. Grieve Corp., 1330 N. Elston Ave., Chicago, 111. 60622. 426
Model 1003 plasma machine features low temperature ashing. The apparatus is capable of ashing up to 2.0 grams per hour at up to 300 watts of rf power. Simultaneous ashing is possible through two large 3" by 6" chambers which provide space for 10-gram samples. Metered gas flow is precisely controlled so as not to disturb delicate samples. International Plasma Corp., 25222 Cypress Ave., Hayward, Calif.
427
CREATIVE
it helps to have instruments capable of performing a wide variety of tasks. The versatile MP-System gives you the basic building blocks common to most electronic instruments. Interconnect the precision modules with patch cords and they will perform most electro- and photometric instrument functions.*
NEED ASSISTANCE? Our 114 page manual answers most questions. It contains detailed descriptions, practical applications and set-ups. A new lab manual by L. P. Morgenthaler explains operational amplifiers and their use in chemical instrumentation. In addition, the bi-monthly MPI Applications Notes keeps you up-to-date on new uses.
ECONOMICAL Simplicity, solid state circuitry and good design have been combined to permit the lowest price consistent with high performance.
*coulometry, polarography, pH titrations, spectrophotometry, colorimetry, filter fluorometry, conductimetry, temperature measurement, etc.
BOX 322, DANVILLE, CA 94526 Circle No. 39 on Readers' Service Card
94 A · ANALYTICAL CHEMISTRY
when you need to be
ISCO
MPI McKEE-PEDERSEN INSTRUMENTS
