Does anyone know where I can find a PTFE hydrophobic membranes with pore size range 20-100 nm?

28 March 2019 0 9K Report

Hi everyone,

I would like to conduct some experiments with DEMS. To determine the volatile products in the liquid phase I will need some PTFE membranes with small pore size.

Badges
Science topic

More Bjorn Hasa's questions See All

available breath sound records in healthy subjects?

I am interested in testing neural network to separate healthy subjects from COPD patients and I have access to Altan 2017 RespiratoryDatabase@TR but Iwould like to have also those files on...

22 September 2020 2,769 3 View

Test norms: How to convert raw scores to scaled scores (M10, SD3) using the cumulative frequency distribution?

I am working on a regression based approach to provide new norms for a neuropsychological test battery. I am trying to use a similar apporach to Heaton et al, or The utility of regression-based...

20 April 2018 4,681 4 View

The Laws of Nature - Coincidences versus Destiny - Do we have a Free Will?

Today I among many others received an e-mail from a Portuguese colleague, with an interesting article by Stephen Hawking about if the universe is random or predictive on the following...

03 March 2018 6,403 5 View

Can we recognize signs of the "volatility clustering" property of a time series in its time domain plot?

My purpose is to recognize the volatility clustering property without statistical tests such as The Lagrange Multiplier (LM) test.

24 February 2021 4,150 3 View

Have you ever experiencing air vent trouble in fermentation process?

Dear all, My research group is currently working with a 12-litre fermenter. Somehow, if we do the fermentation for more than 20 hours, the process will be more prone to contamination. Our current...

23 February 2021 1,908 2 View

Gromacs force field and water model recommended for protein hydrophobic study?

Dear All, I received a comment from reviewer about asking me selection of force field and water model. I choose OPLS-AAL and 3-point water model. They mentioned the combination of OPLS-AAL and SPC...

13 February 2021 1,364 3 View

Can anyone please suggest where I can find a reference for ReaxFF parameters for PTFE(Teflon) suitable for use in LAMMPS?

Trying to simulate a ice-PTFE interaction and am unable to find a reference which actually lists out forcefield parameters for PTFE-PTFE interactions using ReaxFF or even other force fields like...

08 February 2021 9,373 2 View

What could be possible reason of higher Drug Concentration of Liposomal formulation stability samples over time?

Hello Everyone! I have prepared liposomal formulation using Rotary Evaporator method followed by dialyzed the liposomal Suspension in Phosphate buffer to remove the un-encapsulated drug. After...

25 January 2021 7,752 4 View

GC-Headspace (HS-GC) chromatography for Forensic toxicological and Food expertises?

Dear Colleagues! How correct and appropriate is it to conduct forensic toxicological and food examination of volatile substances (ethanol, methanol, propanol, ethyl glycol, etc.) in blood and...

24 January 2021 5,645 2 View

What is the average lifetime of ODLAB acid inert heating plates?

Dear Colleagues, common hotplates have a short lifetime when used for acid digestion of rock/mineral samples. PTFE/graphite coated hotplates are much more expensive and should live much more than...

21 January 2021 1,208 3 View

What are state-of-the-art methods/techniques/algorithms for the root-cause analysis of the anomalies?

I have been looking for research articles that target the question "why did an anomaly occur?", however, most of the papers that I found are related to "if an anomaly occurred?". I searched Google...

12 January 2021 7,951 3 View

How weight of carrier and coating material calculated in formulation as taken in ratio?

In liquisolid technology, carrier and coating material in ratio taken the add non volatile solvent then check angle of slide then how weight of carrier and coating material calculated to add in...

09 January 2021 9,589 5 View

Why polyethersulfone membrane is hydrophilic?

Polyethersulfone membrane are generally hydrophilic. How can I explain this in terms of chemistry, molecular structure and functional group?

03 January 2021 6,321 7 View