Monthly Archives: December 2017

If the goal of your vacuum filtration is purification using a membrane with an absolute pore size, Sterlitech recommends utilizing glass filter holder assemblies. Compared to Buchner funnels, these systems create a tight seal to prevent liquid bypass around the membrane. Without this seal, the benefit of a highly retentive membrane disappears.

It is typical to experience some leaking in many vacuum filtration applications, but minimizing this will significantly improve yield. There are a few ways to ensure optimal sealing, including proper set-up of the apparatus and running under the manufacturer’s recommended conditions.

To illustrate this, we ran trial liquid filtration on our 150 mm assembly with improper gasket placement (below support)

In a recent article, we described how environmental DNA (eDNA) has been used to detect the presence of aquatic species in lakes and rivers.  eDNA studies have demonstrated great potential for surveillance of rare, endangered, and invasive species by simply collecting and analyzing water samples from target habitats.  Dr. Caren Goldberg, of Washington State University, is one researcher using a unique combination of Sterlitech filters in her investigations of Yangtze giant softshell turtles in southeast Asia, tiger salamanders in California and Arizona, and fairy shrimp in southern California.

Many of our eDNA end-user researchers utilize

Sterlitech’s Hold-up Volume Recovery Kit is designed to enable users to recover residual solution from a cross flow filtration system or a skid mounted system to achieve a total drain. Available in both 110V and 220V, this is essential for applications involving high value or hazardous/corrosive feed solutions when complete recovery of the feed is desired. Each kit includes:

• Vacuum pump
• 2 Liter polypropylene collection container
• Low pressure Tygon tubing
• Stainless Steel Hose Connector

Kits will be attached to a filtration system or a skid through a 3/8” NPT fitting to recover any residual solution.

We are pleased to announce our ISO 9001:2015 quality certification for the design, development, and manufacture of filtration products. This award by Perry Johnson Registrars indicates that the quality management system at Sterlitech is designed to increase productivity, streamline processes, and ensure product quality.

ISO 9001:2015 registration certifies a process-oriented approach to quality management. Both customers and business partners can recognize this certification as a symbol of commitment to developing and maintaining quality policies. ISO is the world’s largest developer and publisher of international standards, and ISO 9001:2015 defines the requirements for Quality Management Systems. The management standards of the ISO 9001:2015 certification are observed by more than one million companies in more than 170 countries worldwide.

Sterlitech would like to recognize the effort of our entire team to make this accomplishment possible. Our registration with ISO 9