for the first time . . .
ASHING at LOW temperature!
the new electronic Tracerlab LTA-500 . . . presents the modern analyst with the first revolutionary change in ashing technique. This new and unique instrument covers all studies in which elemental analysis of organic samples is required. Low temperature ashing is a radical departure from traditional techniques of sample decomposition. Most techniques require energy, usually in the form of heat, to be applied directly to the specimen, thus leading to the destruction of inorganic constituents. In the LTA-500, a high purity stream of ionized and atomic oxygen, produced by a high frequency electromagnetic field, is the only oxidizing agent. This method permits controlled ashing of samples in which quantitative retention of inorganic elements or retention of mineral structure is critical. Sample temperatures during the ashing process do not exceed 150° C. The high reactivity of the electronically excited oxygen insures quantitative conversion of carbon and hydrogen into their respective oxides. Proteins, carbohydrates, vegetable matter, graphite, and small whole animals can be ashed, with no carbonaceous residue.
The new L T A - 5 0 0 * • Creates new standards of operating convenience and time economy · Volatization and diffusion losses eliminated or substantially decreased · Eliminates tedious wet ashing · No chemical additives required · Eliminates reagent contamination · Ashes up to 12 samples simultaneously (also available as a one large sample model) · Unit adaptable for downstream cold trapping
For complete information on this versatile instrument, including full lab test reports, write to:
•Patent pending
LFE
Tracerlab
A Division of Laboratory for Electronics, Inc. 2030 Wright Avenue, Richmond 3, California
Circle No. 157 on Readers' Service Card VOL. 35, NO. 1, JANUARY 1963
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