Filtration 101

Filter Basics

100

What is a filter?

Name three different kinds of filters.

200

What is Filter media?

Name 3 examples of Filter Media.

300

What is Upstream vs. Downstream? 

In filtration, we also use "discharge" and "input" sides.  Which refers to upstream/downstream?

400

Filtrate vs. Retentate? 

Give an example of when you'd want to keep the filtrate, retentate.

500

TIME CHALLENGE (30 sec)

Draw a filtration process and diagram: 1. filter, 2. upstream and downstream, 3. filtrate and retentate.

Filter Types

100

Pressure vs. Vacuum Filters

Describe the difference between a pressure vs vacuum filter

200

Surface vs Depth Filter

Describe the difference between a surface vs. a depth filter.  Give examples for both.

300

Continuous vs. Batch Filters

Describe both.  Which kind of filter requires no interruption of the process?

400

Dead End Filtration vs. Cross Flow

Describe both, which is the more conventional approach?

500

TIME CHALLENGE (30 sec)

Diagram an air cabin filter and label the following: Pressure/Vacuum, Surface/Depth, Batch/Continuous, Dead End/Surface. 

Size Classification

100

Macro vs. Micro

How many microns does it take for something to be considered a "macro particle?"

200

Ultra vs. Nano

Which is smaller?  Give an example of something Ultra and Nano-sized

300

Micro vs. Ultra

Is a virus filtration micro or ultra?

400

Smallest to Largest!

Sort:  Micro, Ultra, macro, and Nano

500

TIME CHALLENGE (30 Sec)

Most MERV numbers (1-10 especially) fit which size classification?

Media Technology

100

Wovens vs. Nonwovens

Which type is most prevalent in the filtration industry?

200

Wetlaid

Explain the wetlaid process, and give an example.

300

Meltblown

Is meltblown a process for organic or synthetic fibers?

400

Spunbond

Describe the process and give an example of a real-world product that uses this technology?

500

HOT SEAT

Which company owns ForceSpinning Technology?

Physics

100

Adsorption vs. Absoption

Name a pourous medium typically used for adsorption.

200

Resistance vs. Pressure Drop

Using three arrows, describe the proportionality of resistance, pressure drop, and flow rate.

300

Tortuosity

Give an example of a material with high and low tortuosity.

400

Permeability, Porosity, Tortuosity

Describe Permeability, Porosity, and Tortuosity along with their relationship (proportional) to each other.

500

TIME CHALLENGE (30 Secs)

Laminar vs Turbulent flow.  Using these filtration terms, sell me on a product that will take my laminar flow and turn it into a turbulent flow.