Good morning/afternoon:<br><br>Columbia Analytical Services, Inc., an employee-owned, environmental testing laboratory, currently seeks qualified analytical ...
Any 6890 experts out there? I am a new user with a problem. I am setting up a capillary column (5% PhMeSi) on a system with split/splitless injection and I ...
You are right. The rate determining step (RDS) is the slowest step in the mechanism of the reaction. One way of determining the RDS is to look at the change of...
Any chance we could get a conversation started on a chemistry topic...<br><br>Here is one ... in several of my recent teaching experiences, I have noticed a...
Columbia Analytical Services, Inc., an employee-owned environmental testing laboratory, is seeking to fill scientific and/or information technology positions...
Hello everbody, I need to know some data about hardness of water of different regions around the world...could you help me? do you have any data about ...
Very Easy, The hardness of water can be tested with the EDTA at an amoniacak pH=10. Hardness comes from Caclium and Magnesium Ox II ions soluble in water, so...
If you want to use the optical method, you should wirk on the Machine Right absorbtion area, so you have to draw both the Spectre to chose the proper wave ...
In Lebanon rivers water has a hardnes detween 682MicroSimens and 1440Microsimens. This diffrence is due from the diffrence of the ground structure and the ...
Dear members, <br><br>I'm glad to join your club. I study physics, chemistry in France.<br><br>I am charged to investigate the way to qualitatively analyze an...
Stanley K. Yasuda at did a similar analysis at Los Alamos in a paper entitled "Identification and characterization of polymers by pyrolytic-hydrogenation gas ...
Good morning/afternoon to all Chemists:<br><br>Columbia Analytical Services, Inc., an employee-owned, environmental testing laboratory, currently seeks...
I assume this is unknown polymer, FTIR is your best bet using ATR, scan your sample and perform a library search against a polymer library then substract your...
Thank you very much cindy and sazer.<br><br>Concerning the GPC method : <br><br>I will look for the paper. It seems to be a very interesting way but also ...
You can post the scan in the photo gallery and post a message about it; as well you can search online library and compare spectrum free of charge. <a...
What kind of plastics (i.e., chemical names) are employed to make the blister packages used for pharmaceutical tablets and capsules? Have any near-infrared...
From memory (I used to work in the analytical labs at a pharmaceutical company) high density polyethylene (HDPE) is a fairly common one, as is PVC (poly vinyl...
Thanks for the information. I will check it out. We recently did a near-IR imaging experiment <br>at the University of Kentucky to identify different ...
Hi plastic covers for mdical tablets are an essential part in the medicament itself. It is not only a bag to contain the drug but it is designed to have a ...
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