I.W. Tremont Co., Inc.

18 Utter Ave, Hawthorne, NJ 07506, USA


(973) 427-3800

I.W. Tremont is a USA based filtration products manufacturer specializing in glass microfiber and cellulose media. We also supply extraction thimbles, syringe filters, membranes and technical specialty materials. Our unique product lines include high purity porous materials used in filtration, wicking, and conveyance applications of powders and liquids.

The Company was founded in 1979 and serves laboratory distributors, analytical instrument manufacturers, IVD, medical device manufacturers and technical markets as a private label and OEM supplier of filter media. ISO9001:2008 registered with TUV Rheinland and GMP compliant. I.W. Tremont provides the highest level of customer service in the industry and confidentiality is always assured.

I.W. Tremont Co., Inc. was formed with the same enthusiasm, demand for quality and the highest business ethics as demonstrated today. Salvatore J. Averso, President, started the company in 1979 and clearly demonstrated an entrepreneurial spirit that was ahead of his time. When leaving a large international firm with dominance in the analytical filtration industry to start his own company, Mr. Averso relied heavily on his strong scientific research background and a work ethic passed down from generations of family business owners. This powerful combination proved to be a successful one that would lead the business well into its second generation and beyond.

Today I.W. Tremont is still family owned and managed. Although the business has grown, the product line has expanded and the industry has matured, the same basic business philosophy has not changed. We continue to produce the best analytical and technical specialty products possible while offering the most responsive personalized customer service in the industry.

Company details


Year founded:

Company type:
Privately Held

Company size:
51-200 employees

Glass microfiber filter media, High purity cellulose porous papers, and Membranes.

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