Exploring ideas from my decades as a practitioner in filtration, drying, and solid-liquid separation, and my sales, marketing, technical writing, and leadership experiences.

P&ID’s Areas of Focus

Many articles on P&ID are written by Barry Perlmutter based on his 35+ years as a practitioner and current president and managing director of BHS-Sonthofen, Inc. BHS is a filtration and drying technology company, and a subsidiary of BHS-Sonthofen GmbH. In 2018, BHS acquired AVA-GmbH for its reactor-mixer-dryer technology to provide complete turnkey process packages.

Still, not everything Barry does is focused on process operations. Barry is interested in innovation across industries, sales and marketing, technical writing, and leadership. Barry also draws on experience bringing international businesses to the North American market. Yoga keeps Barry peaceful, but traveling and being a lifelong learner keep him engaged!

Barry shares his learnings and new ideas in blogs addressing the following categories:

I’m currently working with a group of international contributing authors on my next book for Elsevier, Integration & Optimization of Unit Operations. Learn more about that project!

Image source

Technical Expertise in Many Fields


Articles for BHS Filtration

Writing in Chemical Processing

Contributions to AICHE on Fine Particle Filtration and Drying Technology

Energy & Oil & Gas

Contributions to PTQ


PharmTech Article

Industry Awareness

Interview with World of Chemicals

Follow Barry Perlmutter and P&ID

Connect on LinkedIn

Follow my blog  www.perlmutterunfiltered.com

Tweet @BaPerlmutter

Questions or comments? Email me at baperlmutter@gmail.com. I’d love to hear from you!

P&IDs are idea development in action.

Have an idea for a partnership? Or suggestions for future perlmutterunfiltered.com blogs? Let me know!