ANALYTICAL
10 A
CHEMISTRY
DETECT all METALLIC ELEMENTS > at a Glance < Using IMPROVED Spectranal Methods (U. S. Patent Pending)
TWO SPECTRANAL METHODS OF ANALYSES Complete qualitative analysis of all metallic elements can be made rapidly b y simple visual spectroscopic methods. B y using a basically new method of element excitation, analyses m a y now be made directly on either metallic samples or elements in solution b y the methods shown below. To Spectranal
To Spectranal
power supply
power supply
Sample of metal to be analyzed
Excitation electrode
Platinum electrode
Platinum electrode
10% Nitric Acid solution o n l y
Sample dissolved in 10% Nitric Acid
For analysis of metal strips,
For analysis of metallic
wires, rods, turnings, etc.
e l e m e n t s in solution.
In the method on t h e left, t h e excitation light appears on t h e submerged surface of t h e metal sample being analyzed. This light when viewed through t h e spectroscope is seen t o be composed of only the principle spectral identification lines of each element present in the sample. In the other method, only the dissolved metallic elements produce their identification lines. T h e special excitation electrode does not produce any lines of its own. A specially prepared reference table, which gives t h e wave lengths of 4 identification lines of each metallic element, is supplied with t h e instrument. One or more elements in a sample m a y be readily detected simply b y noting whether their 4 reference table identification lines are present among the spectral lines of the sample.
ANALYZES ALL TYPES OF SAMPLES Metallic elements in any type of sample material, regardless of its composition or physical state, may be readily analyzed. Samples m a y be alloys, biological materials, pharmaceuticals, ores, minerals, foods, inorganic and metallo-organic chemicals, soils, water, drugs, etc., either as solutions or solids. Simple procedures are given in t h e operating instructions for preparing any type of sample material for analysis.
WIDE ACCEPTANCE Several hundred industrial, institutional, and governmental research a n d control laboratories are using t h e original Spectranal method for routine analyses. W r i t e N O W f o r B u l l e t i n 140.
FEATURES Rapid detection Positive identification Good sensitivity Visual m e t h o d Micro or semi-micro samples Sample n o t destroyed Continuous excitation H a r m l e s s excitation voltage N o accessories r e q u i r e d TODD SPECTRANAL as shown includes the built-in high quality Bausch & Lomb improved prism spectroscope with reference scale, achromatic lenses, and all adjustments. The base contains the excitation power supply and controls. Also included are the glass excitation chamber with the special excitation electrode and a platinum electrode, support rod, clamp, variable scale light and beaker for water cooling. For use on 110 volts a. c. or d. c. Overall height 21". Complete with operating instructions $350
IMMEDIATE SHIPMENT
TODD SCIENTIFIC COMPANY Distributors and manufacturers of special scientific laboratory apparatus.
S P R I N G F I E L D , PA.
