Posted in Physical Chemistry

Lab Photo Gallery

Enjoy these beautiful photos we have collected from our laboratory.

IMG_5974

A thermal image of the Kohler closed-cup flashpoint tester in action. Notice the rising heat from the test flame.

RubyContactAngle

We use bearing balls in gauge card holes to simulate sessile water drops on hydrophobic surfaces. This is a ruby bearing ball, and it has been analyzed by the Brugnara Contact Angle plug in for the ImageJ analysis software package.

IMG_8555

Here is a little demonstration to show that aluminum metal will effervesce in BOTH pH extremes. The left beaker has 1 M HCl (pH <1) and the right beaker has 0.5 M KOH (pH > 11). Placing them into concentrated cleaning solutions with these pH values will damage the part and will leave a black porous smut behind. Dilute the cleaning solutions as per the instructions from the supplier.

PQCW04

One of the attendees of the Product Quality Cleaning Workshop is about to test the interaction of dichloromethane with clear vacuum silicon grease.

That’s all for now. Click the follow button on the right for notifications of future posts.

-Darren

Advertisements

Author:

Dr. Darren L. Williams (@pchem4all) is an Associate Professor of Physical Chemistry at Sam Houston State University. When he is not blending solvents, he is tinkering with contact angle measurements, FTIR microspectroscopy, etc. http://www.shsu.edu/chm_dlw/ . He welcomes your comments and questions by phone (936-294-1529) and by email (williams “at” shsu.edu).

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s