Wednesday, April 25, 2018

Applied Separations Grant Deadline Approaching

Teach college chemistry? Want to include Supercritical Fluids in your curriculum for free? The deadline to apply for the Spe-ed SFE Prime Grant for Education is approaching. HERE for more information about the grant and how to apply. Deadline: April 30.

Tuesday, March 6, 2018

Supercritical Techniques: Particle Collection Using RESS

by Al Kaziunas

RESS is a technique using supercritical fluids to make small or nano -particles. 

RESS is an acronym for Rapid Expansion of a Supercritical Solution and compounds that are soluble in supercritical CO2 can be discharged through a nozzle to atmospheric pressure. As the supercritical solution depressurizes, the dissolved compounds are no longer soluble in gaseous CO2 and they precipitate as fine particles.


A serious shortcoming with the RESS technique is the collection of the small particles. Typically, the particles precipitate on the surface of a collection vessel or separator and must be scraped off the surface of the vessel. This is a tedious task and it is very difficult to collect most of the particles. Applied Separations, a supercritical CO2 company, has addressed this problem by discharging the RESS particles into a specially designed bag filter inserted into the RESS collector making the collection and recovery of RESS particles a much easier task.

Tuesday, February 20, 2018

Supercritical Fluids: the Mosh Pit of Matter

by Rolf Schlake

As I travel around the world to various conferences giving papers or lectures on our supercritical fluid technology, we take for granted as to what a supercritical fluid is. However, I am often asked to speak to non-scientific persons, perhaps through business or civic groups such as the Chamber of Commerce or Rotary International regarding a particular application using supercritical fluids. Invariably, I must describe what a supercritical fluid is. From painful experience, as soon as I mention phase diagram, temperature, pressure, the eyes glaze over and the audience is asleep!

This explanation is quite simplistic to those of us in the know, but think of the time when you might be explaining your technology to someone at the next reception you go to. It goes like this.

We are all familiar with 3 states of matter: solid, liquid, gas; ice, water, steam. Well, there is “sort of” a 4th. I say “sort of” because it’s not really, but it works for our purposes. Let’s illustrate people as molecules, huddled and touching each other in a large group, standing cramped, like in an elevator. This is a solid.

If we toss a beach ball onto this mass, it just bounces off, not falling and being held by the mass of people. Meaning, we can’t dissolve anything in a solid. I.e. a cube of sugar, as a cube of solid sugar, will not dissolve into the sugar bowl itself.

Now if we disperse all these people widely….very, very widely, like tens of feet apart and moving around because they are not tied to anything. Then we consider this to be analogous to a gas. The molecules are widely dispersed. And if we toss a beach ball amongst this group, the ball will fall to the floor and not intermingle with the people. Also, a gas cannot dissolve compounds.  Our sugar cube does not dissolve/disappear into the air.

If we bring our people close enough together to be able to hold hands (perhaps multiple hands, like an octopus), we now have something we might describe as a liquid. Accordingly, if we toss our beach ball into this group, the ball gets caught and held in the arms of the people. This time our sugar cube is dissolved in the liquid, similar to the beach ball being contained by people’s arms.

All right, we have described the three most recognized phases of matter. But then what is a supercritical fluid?

Let’s go back to our liquid state, where we have people close to each and holding hands. Now, let’s make our persons stay close to each other but have them actively move around, where they can no longer hold each other’s hands…. constantly and quickly moving close to each other. If we toss our beach ball into this crowd, the ball does not bounce off nor does it hit the floor. It is caught up between persons because they are close to each other. However, they no longer fit the definition of a liquid because they are not holding hands. This is a supercritical fluid. It is dense like a liquid so it can dissolve compounds, but since there are no bonds, no hand holding,  it also behaves like a gas.


via GIPHY

 A SUPERCRITICAL FLUID IS THE MOSH PIT AT A ROCK CONCERT COMPLETE WITH CROWD SURFING!

Tuesday, January 30, 2018

Teach Supercritical Fluids in Your College Lab FREE


We are now accepting applications for the 2018 Spe-ed SFE-Prime for Education Grant.



To win the Spe-ed SFE-Prime for Education package, submit your proposal. 

Proposals should illustrate how the Spe-ed SFE Prime and supporting materials will be used to teach Supercritical Fluids in the post-secondary classroom. 

The focus must be on teaching green chemistry with the Prime system and how SCF can impact business, processes, the environment, and the overall green economy. 

Research topics MUST be related to Green Chemistry and environmentally-friendly technology and/or processes. 

Applications should include how the use of the Prime and SCF can educate students about eliminating petroleum-based solvents, pollution or residue; or how SCF can be used in nanotechnology.

Applications are due April 30, 2018. More information about the grant can be found here: http://appliedseparations.com/scf-educational-grant.html

To apply: http://appliedseparations.com/grant-application.html

Thursday, November 2, 2017

Hate to Pipette? Now you don't have to!

The Burst device - offering an alternative to pipetting - is faster, simpler, more accurate and less expensive than traditional methods for Protein, DNA, and other Precipitations. 

The Burst eliminates the pipette step, also eliminating contamination and sample loss. 

We have recently added the Burst Kit to our online shopping offerings. 

Visit the Burst page of the website for a more detailed explanation of how the Burst works and can streamline your process.

Tuesday, August 15, 2017

Order Solid Phase Extraction Consumables Online

Applied Separations announces the addition of an online store to their website.
Order:
  • Filled Cartridges
  • Fritted Cartridges
  • Empty Cartridges
  • Bulk sorbents
  • Frits
  • Stopcocks
  • Caps
  • Cap plugs
Visit the shop and see the wide variety of products offered.


Friday, July 14, 2017

Order Sorbents Online - Coming SOON to the Applied Separations Website

The team at Applied Separations has been hard at work getting ready to launch a new service - Online Ordering on the website for a selection of filled and empty solid phase extraction cartridges, frits, accessories and bulk sorbents. 

Keep an eye on the blog and our twitter feed for updates!