Viscosity is one of the major variables affecting filter flow rate. The flow of liquid through an orifice - including pores in a membrane filter - is inversely proportional to
the viscosity of the fluid. Higher viscosity will result in lower flow rate, unless it is offset by an increase in pressure drop.
Most filters are rated for flow per PSID (Differential Pressure) using water. Water at room temperature has a viscosity of 1 centipoise (1 cP). Because the flow is directly proportional it is a straightforward calculation to determine the effect of viscosity. Just make sure to determine the fluid viscosity in centipoise!
(Fluid Flow) = [(water viscosity) / (Fluid Viscosity)] x (Water Flow)
For example: A filter with a flow rate of 10 gpm with water, would have a flow rate of 1 gpm if the fluid has a viscosity of 10 cP, and a flow rate of 0.1 gpm if the viscosity was 100 cP.
In the realm of sterilizing filtration, micron ratings can be a bit confusing. Some suppliers call out a rating of 0.22 mm. Others use 0.2 mm. Some actually use both (usually but not always for different products). Is there really a difference? Read More
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Certification Numbers:
WBE2401210
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We are excited to announce that Critical Process has been officially certified as a Woman-Owned Small Business (WOSB) in April 2024. This certification not only recognizes our longstanding status as a woman-owned business since 1998 but also signifies new opportunities on the horizon!
Critical Process proudly sponsored the FORE the Veterans Golf Tournament for the third year in a row, hosted by Liberty House. It was a privilege to be involved in this event and express our appreciation to those who have served.
Critical Process was honored to be a sponsor of the Greater Nashua Habitat for Humanity Cornhole for a Cause Tournament! This exciting event took place on June 22nd, offering a day of fun games and thrilling activities - all in support of a great cause!
Fall will be here before we know it, and that means The ISPE Product Show is coming back to Gillette Stadium in Foxborough, MA. This annual event caters to members of the pharmaceutical and bioengineering communities. Attendees come from all around the country to exhibit, purchase, network, and learn about emerging technologies. Whether you are new to the industry, or a career veteran, this event is for you.
Earlier this year, we introduced an array of exciting new product options. Our capsule filters now allow for end caps and bleed valve selections, allowing for a more tailored approach to meeting your exact specifications. These recent enhancements have been seamlessly integrated into our datasheets, and our dedicated team is on hand to offer any additional assistance or clarification you may require.
