Search Results | Hagley Digital Archives

Title: Analytical and dye testing section in the Technical Laboratory at Deepwater Point, New Jersey
Date(s): 1937-03
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3001
Collection: DuPont Product Information photographs

Title: Dye testing equipment
Date(s): 1945
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Porcelain pots, glass rods and textile yarns in a dye bath--equipment used at the Technical Laboratory of DuPont, where dyestuffs are tested each day for quality and uniformity of color.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3006
Collection: DuPont Product Information photographs

Title: Plastics coloration studies
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Plastics coloration studies at DuPont's new Pigments Sales Service Laboratory. The panel the technician is working on it is called 'draw-down'. Pigmented samples are cured in a an oven, then tested for heat and light stability and uniformity of pigmentation. The $5 million sales service installation was opened formally on May 21.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2997
Collection: DuPont Product Information photographs

Title: Testing dyes on lithographer's stone
Date(s): 1945
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Miss Dorothy Bennett of the DuPont Company's dyestuffs Technical Laboratory mixes lake colors on a lithographer's stone, bringing them to a specified working concentration to make sure they conform to standard.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3004
Collection: DuPont Product Information photographs

Title: Testing dyes for fastness
Date(s): 1936-12
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: The upper strip is a fastness test record of a vat dye the lower strip a direct dye. The white swatches are undyed materials used in the test to demine whether the dye bleeds onto the adjacent material. If these fabrics are examined carefully, comparison of the equivalent test on each of these colors will quickly demine their relative fastness.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3003
Collection: DuPont Product Information photographs

Title: Testing pigmented plastic
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Testing pigmented plastics at DuPont's new Pigments Sales Service Laboratory. Here operator loads plastic resin into an extruder, while extruded plastic material is cooled in water bath at lower left. In this operation pigment in the plastic is evaluated for dispersion and heat stability of the color.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2998
Collection: DuPont Product Information photographs

Title: Testing dye fastness with Launderometer
Date(s): 1931-05-16
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: A Launderometer, a machine which tests the fastness of dyes in chemicals used in commercial laundries. Pieces of the dyed fabric are place din the jars with the chemicals and some stainless steel balls. The whole battery of jars is then revolved for the duration of the test.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3005
Collection: DuPont Product Information photographs

Title: Checking dye shades
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: A skilled dye maker at DuPont's Organic Chemicals Department's Chambers Works at Deepwater Point, New Jersey is shown with a lab technician checking dye shades.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3007
Collection: DuPont Product Information photographs

Title: Testing laundered fabrics
Date(s): 1945
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: In testing fabrics for the fastness of dyes in washing, special soaps and soda ash solutions are used. The fabrics are checked for 'bleeding' or running dyes. Fabrics are also laundered in accordance with commercial laundry standards and are given repeated tests on an accelerated basis to represent years of use.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3010
Collection: DuPont Product Information photographs

Title: Chemist inking the press
Date(s): 1945
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Fabric dyes for printing designs on piece goods are tested on a small press at DuPont's Technical Laboratory Chambers Works. Here a chemist is shown inking the press with color paste. Each batch of dye made at the Chambers Works must agree with the standard set by the Technical Laboratory or it cannot be shipped.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3009
Collection: DuPont Product Information photographs

Title: DuPont Chambers Works facilities at Deepwater Point, New Jersey
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3109
Collection: DuPont Product Information photographs

Title: Judging dyed skeins
Date(s): 1945
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Judging dyed skeins for strength and shade of the dye under north light in the Standardization Lab of the Technical Laboratory, Dyestuffs Division of the DuPont Company.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3008
Collection: DuPont Product Information photographs

Title: Chambers Works dye plant owned by the DuPont Company
Date(s): 1955
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3110
Collection: DuPont Product Information photographs

Title: Weighing room at DuPont Technical Laboratory
Date(s): 1941
Contributor(s): E.I. du Pont de Nemours & Company (originator), Rittase, William M., 1894-1968 (photographer)
Description: Accuracy is extremely important in testing dyestuffs. Delicate balances are used, it being frequently necessary to weigh as little as 1 milligram of color. The DuPont Technical Laboratory is equipped with sensitive scientific balances, handled by trained operators to weigh out quantities of color used in making dyeings of prescribed strength on cotton, wool, rayon, acetate, nylon, silk, paper, leather etc.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3000
Collection: DuPont Product Information photographs

Title: Reflux Units used in ascertaining the resistance of a brown dye to various metals
Date(s): 1941
Contributor(s): E.I. du Pont de Nemours & Company (originator), Rittase, William M., 1894-1968 (photographer)
Description: The equipment illustrated is typical of what the visitor will see in most research and application laboratories. Known as reflux units, they are used as testing instruments in ascertaining the resistance of a brown dye to various metals. Each flask contains a piece of metal and a prescribed quantity of dye in solution. After continuous boiling for a 24 hour period, the dye is carefully checked and tested, to determine what effect if any the metal may have had upon its shade, strength,...
Show moreThe equipment illustrated is typical of what the visitor will see in most research and application laboratories. Known as reflux units, they are used as testing instruments in ascertaining the resistance of a brown dye to various metals. Each flask contains a piece of metal and a prescribed quantity of dye in solution. After continuous boiling for a 24 hour period, the dye is carefully checked and tested, to determine what effect if any the metal may have had upon its shade, strength, physical composition or any other property essential to a satisfactory dying operation. Thus the user has predetermined information grading the characteristics of a color available to him.
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Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_2999
Collection: DuPont Product Information photographs

Title: A Zeiss Pulfrich photometer
Date(s): 1936-12
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: A Zeiss Pulfrich photometer with a sphere reflectometer attachment, is used for measuring reflection from any surface at various wave lengths of light. The machine is used in the laboratory to test detergency by measuring the brightness of scoured pieces. This equipment is located at the Technical Laboratory in Deepwater Point, New Jersey.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3002
Collection: DuPont Product Information photographs

Title: Wash day at the dyes laboratory
Date(s): 1945
Contributor(s): E.I. du Pont de Nemours & Company (originator)
Description: Wash day is a colorful event at the dyestuffs Technical Laboratory of the DuPont Company. Here Miss Dorothy Hampton [a laboratory technician] takes in dyed and printed samples of cloth which have been hung out to test the fastness of colors to alternate laundering and sunlight. The vat dyes will hold up under a great many washings and clothesline dryings.
Collection ID: DuPont Company Product Information photographs (Accession 1972.341)
Hagley ID: 1972341_3011
Collection: DuPont Product Information photographs