EDITOR'S COLUMN these techniques when one of their problems, farmed out to an inde pendent research organization, is successfully solved by "microscopic thinking." This often leads the research di rector to seek " o n - t h e - j o b " train ing for some of his staff members. To meet such needs, McCrone As sociates initiated a 3-week inten sive course in microscopy for indus trial personnel five years ago. Topics covered include such funda mentals as optics, care, and adjust ment of the microscope, illumina tion, photomicrography, size meas urements, crystal morphology and optics, and basic techniques of fu sion methods. I n laboratory ses sions students often work on sam ples of their own choice. Increasing interest in this activ ity led to establishment of McCrone Research I n s t i t u t e ( M M ) , a non profit corporation, which has as sumed teaching, basic research, and other public service activities. According to D r . McCrone, these accelerated courses have m a n y ad vantages. In m a n y cases the usual cost of equipping a laboratory with very expensive polarizing micro scopes is avoided because " s t u d e n t s " bring their own. Cost of in struction is reduced as personnel in a research institute can teach as well as carry on their regular re search. Students have the a d v a n tage of studying in small classes under microscopists who are expert in different aspects of microscopy and crystallography. Because the majority of the stu dents are m a t u r e , h a v e a serious purpose, and a good educational and experience background, t h e y cover more material, more thor oughly, in a shorter time t h a n in conventional undergraduate courses. In developing the courses it was found t h a t there was no single text covering the various areas under study such as optical crystallog raphy, fusion methods, and fiber microscopy. M R I had to develop its own loose-leaf m a n u a l which will appear in book form later.
This complete chromatograph
offers
high sensitivity and high speed
Γ -s
ANNOUNCING:
a compact and precision lab instrument for use on hydrocarbons
To save time but yet obtain more ac curate detection of hydrocarbons, you will cheer this compact ilallikainen M I C R O MALYZER. It is a complete chromatographic instru ment utilizing packed columns with flame ionization detection to provide high sensi tivity, high speed and high resolution. The (lame-detection unit with the column is contained within a thermostatically con trolled oven with an operating range from 30 to 150 °C. The electrometer circuit provides full scale sensitivity of 3 X 10 ~ n amps when used with a 10-mv recorder. There are 17 steps of attentuation in the
electrometer providing a total attentuation of 200,000:1. The complete MICROMALYZ1ÎR, weighing but 30 lbs., is in a vinyl-clad aluminum cabinet 13 3 /V wide, 9 3 /ie" deep by 11" high. All controls are outside, making them easily accessible. Manufactured by llallikaiiien Instruments, specialists in the manufacture of precision scientific instruments, the M I CROMALYZER has been proved a reliable time-saver for accurate analysis of hydrocarbon. Write today for full technical literature.
HALLIKAINEN Instruments
1341 Seventh Street
Berkeley 10, Calif.
Circle No. 179 on Readers' Service Card VOL 33, NO. 3, MARCH 1961
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