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Vreeland Direct-Reading Spectroscope (Model 7)

Vreeland Direct-Reading Spectroscope Model 7

QUICK LINKS

  1. Download the Vreeland Spectroscope Brochure PDF Here(81k)
  2. Download the Vreeland Spectroscope Manual PDF Here(1.36MB)
  3. Download the Digitrex Manual PDF Here(20k)

LATEST NEWS

June 1st, 2011 Spectroscope - The Vreeland Spectroscope is being used by prospectors to determine what minerals are in the rocks."... Read More

December 16th, 2010 Spectroscope - The Vreeland Spectroscope, a great teaching tool.... Read More

April 29th, 2010 Spectroscope - Long time industry user touts Vreeland as ideal for Industry and Colleges... Read More


This instrument provides rapid precise qualitative analysis of all the major elements, using a unique film comparison technique. Semi-quantitative analysis is obtained by the use of "identification" and "elimination" films and special "lines of maximum sensitivity." Liquids as well as solids can be analyzed.


METHOD OF OPERATION

Standard spectrograms of the elements are recorded on special transparent mylar films, built into the instrument. These are illuminated by continuous spectra generated by the electrode tips so that their lines appear in their true spectral colors. The lines of the standard and those of the corresponding element in the sample may be compared and matched side by side to give proof-positive identification. The effect is the same as if two known, pure specimens were being burned and matched against the unknown, one on either side. The comparison of the observed pattern with its master film makes the identification complete. It is like fitting a key into a lock. Each notch of the key corresponds to a tumbler of the lock. So with the spectrum. Each coincidence of a line of the spectrum with an immediately adjacent standard line is highly accurate in itself. When such coincidences are multiplied the possibility of error is eliminated.


APPLICATIONS


MINERALOGY - The system makes possible the rapid and precise identification and quantitative evaluation of all common and most of the rare elements occurring in minerals.

MINING - Due to its rugged construction and simple operation it can be used right at the mine site and provide immediate analytical feedback.

FIELD EXPLORATION - Coupled to a suitable motor-generator it is ideal for field surveys where quick, precise checks have to be made and where expensive time-consuming analysis at headquarters is to be avoided.

OCEANOGRAPHY - The unit can be used on a ship and can take the rough handling and pitching to be expected. The Quantrex attachment is useable during the most difficult storm conditions.

INORGANIC CHEMICAL ANALYSIS - All the major inorganic elements have master films and very rapid qualitative and quantitative analysis can be obtained with the minimum of training.

BACKUP FOR ATOMIC ABSORPTION
- A quick qualitative scan of all possible elements can be made prior to AA determination. The Quantrex attachment will determine a preliminary quantitation while avoiding the delicate complexities of the typical AA system.

TEACHING - Both the qualitative and quantitative features make the system ideal for introducing students to basic spectroscopy both at undergraduate and graduate levels.

CRIME DETECTION - The unit occupies very little space and provides rapid analysis at low cost for crime labs.

Manuals / Brochure Application Notes
  1. Vreeland Spectroscope Manual (PDF 1.36MB)
  2. Digitrex Manual (PDF 20k)
  3. Vreeland Spectroscope Brochure (PDF 81k)
  1. LOOKING FOR PRECIOUS METALS WITH THE VREELAND - September 2011 [PDF - 329kb]
  2. A beginnerís guide to the vreeland spectroscope [PDF - 43kb]
    Geology Department University of Iowa
  3. Spectroscope evaluation by Baron Mining Corporation [PDF - 33kb]
    Reith D. Brecheisen, President, Baron Mining Corporation.
  4. Spectroscope evaluation by Synthetic Products Company [PDF - 33kb]
    Robert W. Cook, Analytical Laboratory Manager, Synthetic Products Company.
  5. Using the vreeland spectroscope in a geoscience mineralogy course [PDF - 28kb]
    D. Brooks McKinney, Professor of Geoscience, Hobart and William Smith Colleges. January 21, 2001.
  6. Using the vreeland spectroscope for teaching mineralogy. [PDF - 12kb]
    Dr. William R. Brice, University of Pittsburgh at Johnstown. August 1998
  7. The use of the vreeland spectroscope for platinum metals [PDF - 14kb]
    J & J Materials, Inc., Neptune City, NJ. August 1980.
  8. Application of the vreeland spectroscope for rapid analysis of stony meteorites. [PDF - 43kb]
    Jerry K. Bitner and Bruce D. Dod, Wayland College, Plainview, TX. Reprinted from Meteoritics The Journal of the Meteoritical Society Volume 14, Number 4,1979.
  9. Qualitative emission spectroscopyin freshman chemistry. [PDF - 27kb]
    Leonard F. Druding and Roger A. Lalancette, Rutgers University, Newark, NJ. Reprinted from the Journal of Chemical Education
  10. Using professional equipment in the beginning geology course. [PDF - 27kb]
    John L. Roberts, Bradford Junior College. Reprinted from the Journal of Geological Education, Volume 18, Number 4, September 1970.
  11. Users of the Vreeland Spectroscope
  12. http://www.silverprospector.com/assaying/vreeland.html

Instructional Video Comments by Users of the Vreeland Spectroscope
  1. View Vreeland Instuctional Video

  1. View Comments by Users of the Vreeland
Price List Teaching Mineralogy
  1. View Vreeland Price List (Including Accessories)

  1. Vreeland used at Hobart and William Smith Colleges, Geneva, NY, January 2010