Humboldt State University ® Department of Chemistry Robert A. Paselk Scientific Instrument Museum The Chemical Refractometer 1874 - 1970 Richard A. Paselk, Curator Refractometry has been a major tool in the chemical laboratory to determine concentrations of solutions and as an aid in identifying unknown substances since the late nineteenth century.
Tuttnauer Brinkmann 2540E Sterilizer/Autoclave Comes with a manual and what you see in the pictures. If you don't see it, you probably wont get it. Specifications are from Tuttauer Brinkmann and may vary slightly due to upgrades, options, or revisions this unit may or may not have.
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