new from F & M The M o d e l the
1 8 0 greatly
analytical
procedure
simplifies for the
microdetermination of C, H a n d N . Here's h o w :
Using a low-capacity micro balance, the analyst weighs a 0.2 to 3 mg sample (solid or liquid) . . .
injects the sample into the instrument, purges the furnace by flipping a switch, further inserts the sample into the furnace. After 4 minutes . . .
model 180 carbon, hydrogen, nitrogen analyzer T h e first commercial instrument capable of t h e rapid a n d simultaneous micro-determination of carbon, hydrogen and nitrogen in organic materials, the new Ρ & M Model 180 is a significant advance in microchemical analysis. The Model 180 can be operated in any analytical laboratory by technicians possessing no special training in micro-analytical procedures. Accuracy and precision of results m a t c h or exceed those obtained by classical methods. Yet the Model 180 performs a complete microanalysis of C, H and Ν in less t h a n 10 minutes. The Model 180 is a highly specialized gas chromatograph every p a r t and component of which was designed specifically for the job a t hand, i. e. fast, accurate and reliable analysis of C, H and N . Among the many outstanding features of the Model 180 are the following: low cost of analysis . . . n o special environment or highly trained technicians required micro sample size . . . less t h a n one milligram sample required single sample for all three determinations single weighing . . . no "weigh-in, weigh-out" procedure extensive automation of analytical procedure gas chromatographic determination of combustion products for fast, accurate and reliable results peak height readout a n d permanent record of analysis from strip chart recorder price . . . approximately $4,000 including balance and recorder. The Model 180 can handle solid or liquid materials and gas samples can also be analyzed with only minor instrument modifications. I n addition, sulfur, halogens a n d nitriles will n o t adversely affect t h e accuracy of t h e analytical results. For full information on t h e Model 180, write for Bulletin 1800. F & M Scientific Corporation, Route 41 a n d Starr Road, Avondale, Penna., 215-COlony 8-2281. European subsidiary: F & M Scientific Europa N. V., Leidsestraat 67, Amsterdam, The Netherlands.
the analyst introduces the products o f combustion into the dual-column, d u a l detector gas chromatograph, a g a i n b y operating a switch. Soon, individual peaks a p p e a r on the recorder chart.
• The first peak is the composite; the second is propor tional to the amount o f hydrogen in the sample; the third, to the amount o f nitrogen; a n d the last to the amount of carbon. In each case, peak height readout yields quantitative results comparable to those obtained b y classi cal methods.
F&Μ SALES
OFFICES:
F & M SCIENTIFIC CORPORATION A V O N D A L E
/
Atlanta · Boston · Chicago • Dallas- Cleveland · Houston · Los Angeles· New York-Pittsburg h-St Louis·Toronto· Washington Circle No. 129 on Readers' Service Card
28 A
•
ANALYTICAL CHEMISTRY
P E N N S Y L V A N I A
