Dropsonde instruments are cylindrical metal devices containing pressure, temperature, and humidity sensors to capture atmospheric profiles and thermodynamic data. The instruments are designed to be dropped from an…

Klaus Biemann's oral history begins with a discussion of his youth near Vienna, Austria. As pharmacy was the family profession, Biemann chose to study it at the University of Innsbruck. He soon developed an interest in…

A three-part catalog of chemical supplies and laboratory apparatus sold by Richards & Co., Limited. The first part lists general laboratory supplies, the second includes specific analytical and physio-chemical…

A catalog of chemical supplies and laboratory apparatus manufactured by the Reading Scientific Company. Contains a number of print illustrations depicting the company's products. The advertised supplies range from…

An early 20th-century catalog of laboratory furniture equipment manufactured and sold by Leonard Peterson & Co. The fully illustrated catalog primarily advertises custom-built benches and cabinetry for science…

A Kipp's apparatus, also called a Kipp generator, was an instrument designed for the preparation of small volumes of gases. The instrument was invented around 1844 by the Dutch pharmacist Petrus Jacobus Kipp (1808-1864)…

Components of a mass spectrometer as designed by Alfred Otto Carl Nier (1911-1994). Mass spectrometers are analytical instruments used to measure the mass-to-charge ratio of one or more molecules in a sample. The…

Pyrex 70% Gerber Bottle - A glass tube bottle with bulbous ends and a flattened midsection. The mid-section has measurements from 0 to 70 mL. One end is inscribed in red "Cheese".

Used Gerber Bottle 8% - A glass tube…

A metal, hand-crank centrifuge with a three-pronged metal base. The base is painted a rusty red color and has been attached to a wooden board for stability. A long metal crank on the side of the base bends at a…

Glass vial with cork stopper belonging to Georg Bredig (1902-1944).

Porcelain mortar owned by Georg Bredig (1868-1944). Mortar and pestles are used to manually grind or crush a sample into a fine powder.

Two sets of mortar and pestles belonging to Georg Bredig (1868-1944). The larger is made of white porcelain and the smaller is made from agate. Mortar and pestles are used to manually grind or crush a sample into a fine…

Unused Welsbach No. 4 Inverted Mantle and No. 8 Magnesia Ring in its original cardboard box from Lindsay Light and Chemical Company.

The Welsbach gas mantle is a device made of fibers impregnated with oxides of cerium…

Beckman Instruments began producing centrifuges after their January 1, 1955 acquisition of industry leader, Specialized Instruments Corporation, or Spinco. With Spinco came the famous Model E Ultracentrifuge, which was…

Klett Bio Colorimeter, a device used in colorimetry to measure the absorbance of particular wavelengths of light by a specific solution. Colorimeters are commonly used to determine the concentration of a known solute in…

Brass instrument with removable wooden handle. Holds two centrifuge tubes. Used for rapid settling of suspended solids from small quantities of liquid in analytical or clinical procedures. Manufactured by Charles Lentz…

Black and white stereograph addressed to Georg Bredig (1868-1944) of a scientist, possibly Aleksandr Nikolaevich Lebedev (1869–1937) posing with a table of glassware and apparatuses. The work is signed by Peter…

Sepia-toned and annotated photograph of two men, one identified as "Naumann," at the physical chemistry department of Leipzig University. Behind the men are shelves with glassware.

Black and white photograph depicting a group of chemists posing with glassware in a laboratory at the University of Leipzig in 1892. A handwritten caption on the back of the photograph identifies those pictured as "Dr.…

Catalog entries for steam and gas engines.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory instruments for the physical sciences made by the Central Scientific Company.…

Catalog entry for a Wimhurst Machine, a static electricity generator used for experiments and powering X-ray machines.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory…

Catalog entry for wave apparatuses for the study of transverse and longitudinal waves.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory instruments for the physical sciences…

Catalog entries for voltameters, instruments for measuring both voltage and amperes of direct electric current.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of laboratory instruments…

Catalog entry for various vacuum tubes for cathode-ray demonstrations, including Crookes' Tubes, Holtz' Tube, and Lenard's Tube.

Part of Catalog K: Physical Apparatus for Universities and Colleges, a catalog of…

Catalog entries for Parabolic Reflectors, used to collect sound, light or radio waves,
and Melloni's Apparatus, for demonstrating the phenomena of absorption, polarization, reflection, and refraction of radiant heat.
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