This collection documents the manufacture and operational use of the Permasep® product line. Permasep® was the leading maker of reverse osmosis permeators, and this collection reflects the global scope of their activities. Materials documenting the manufacture and operational use of Permasep® products include photographs, brochures, slides, memoranda, and videocassettes.

The materials were initially in a set of three-ring binders. The materials have been removed from the binders for preservation purposes; the binders have not been retained. An accompanying inventory provided a brief description of the binder contents and approximate dates for the material. The original placement of facility locations was maintained when removed from the original binders. The collection is arranged alphabetically by series.

The collection is arranged into three series: Company activities, Employees, and Facilities.

The Company activities series includes photographs and slides of Permasep® products, product manufacture, tradeshows, and conferences. The series also provides product brochures and case history images. The series is divided into four subseries: Advertisements and literature images; Presentations; Products, manufacturing; and Tradeshows and conferences.

The Advertisements and literature images subseries contain case history images, advertisements, and product brochures. This subseries also has the original images used in various brochures and newsletters.

Presentations subseries consist of images and video recordings about the B-9 and B-10 permeators shown at press briefings and to other media outlets.

The Products, manufacturing subseries contains images of various models of hollow-fiber permeators, spiral-wound permeators, and transportable permeators. There are also images of details or parts of these permeators.

Tradeshows and conferences subseries consist of photographs of product displays at various events.

Employees series includes photographs and memoranda of Permasep® employees. The photographs are individual staff portraits and employees engaged in work activities.

The Facilities series is divided into twenty subseries according to site location. Included are photographs, slides, and videocassettes of desalination plants, showing interior and exterior views. Site locations include: Antigua, Bahrain, Capri, Egypt, Finland, France, Germany, Greece, Japan, Medeira, Malta, Oman, Poland, Cyprus, Mexico, Saudi Arabia, Spain, the United Arab Emirates, the United States, the Virgin Islands, and Venezuela.