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Messages 153 - 182 of 417   Oldest  |  < Older  |  Newer >  |  Newest
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153
Hi all, I am new here...<br><br>We do arsenic by graphite furnace....
Linda000000
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Jul 24, 2001
11:07 pm
154
Just joined you......
edelirinka
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Aug 17, 2001
4:39 am
155
Does anyone knows what CAEAL Accreditation<br>requirements are?What is it all about?...
edelirinka
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Aug 17, 2001
8:46 pm
156
Hi, I require the enthalpy of vapourisation for the following compounds to use in a Clausius Clapeyron equation, they are,<br> <br>Isobutanol, Pyridine, ...
mat9813004
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Aug 20, 2001
10:22 pm
157
Measured physical constants for a large number of compounds can be found the CRC Handbook of Chemistry and Physics, as well as other similar...
dsbsci
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Aug 20, 2001
10:30 pm
158
Thanks.<br>I have an old CRC Handbook of Physics and Chemistry in my bookcase, but I also found a useful site that I can get to by typing <a...
mat9813004
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Aug 21, 2001
5:35 am
159
Or Chemistry and Physics, whatever. CRC.<br><br>Mat.B...
mat9813004
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Aug 21, 2001
5:36 am
160
<a href=http://www.vsv.slu.se/johnb/java/jav-vp.htm target=new>http://www.vsv.slu.se/johnb/java/jav-vp.htm</a><br><br>You will get Vapor pressures of Volatile...
cviales
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Aug 22, 2001
7:38 am
161
I'm searching for a simpler way to analyze for Acid Soluble Sulfate and Chloride in concrete and aggregate. We currently use the gravimetric method for both ...
dukhayya01
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Aug 28, 2001
3:50 am
162
What is the shortcoming with the method you are using? Gravimetric analyses are historically very precise (or can be). Is there some specific reason you WANT...
dsbsci
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Aug 28, 2001
12:57 pm
163
Time is the major problem. The sulfate gravimetric method is a long and tedious procedure. According to the sulfate method You need to wait for 4 hrs for the...
dukhayya01
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Aug 29, 2001
7:18 am
164
I am kind of stumped. I was looking for a direction for method development of a stability indicating method for multiple analytes of a pharmaceutical product ...
jasoux
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Aug 31, 2001
4:45 pm
165
I agree all chemistry needs to be taught to chemists.<br>If we don't understand Nitrocellulose and organophospherous compounds etc who...
palmerwmd
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Sep 9, 2001
2:59 am
166
www.geocities.com/sachemicalslb <br>it is being upgraded constantly and if you like to add some stufss you can do too...
salebanon77
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Sep 16, 2001
1:26 am
167
Hi.<br>Try <a href=http://directory.google.com/Top/Science/Chemistry/Analytical/...
edelirinka
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Sep 16, 2001
5:30 am
168
Thanks for your help. I was beginning to think that I was all alone here....
jasoux
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Sep 16, 2001
4:46 pm
169
Hi <br><br>Look for these methods:<br><br>- ionic liquid chromatography<br>- sulfate and chloride specific electrodes<br><br>There also are volumetric methods....
frenchem20
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Sep 24, 2001
1:37 pm
170
Have you thought about HPLC analysis? <br>Using UV/visible detector, you could monitor for methylene blue with time.<br>You could also try to hydrolyse methyl ...
frenchem20
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Sep 24, 2001
1:44 pm
171
Please, help me if you know.<br>I wonder what kinds of signals are output signals (when they exit from a detector<br>and go into a computer). I mean various...
bobby71bio
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Sep 27, 2001
9:16 am
172
Output signals are very definately not standardized....the nature of each experiment in large part determines the signal. In fact, each company will handle ...
dsbsci
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Sep 27, 2001
1:52 pm
173
try to join bhojaks logical chemistry club to go for reasoning questions from analytical chemistry...
narendarbhojak
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Sep 30, 2001
2:47 pm
174
I'm sorry I've taken so long to reply to your post. The answer to your problem(s) could well be thermometric titration. We can do both sulphate and chloride ...
labrat1941
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Oct 4, 2001
1:44 am
175
We have a certain amount of an acid which is dissolved in water. Can we predict pH of the obtained solution if we know the dissociation constant of the acid. ...
bobby71bio
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Oct 12, 2001
7:50 am
176
Ive just started my BSc in analytical chemistry and one of my first laboratory practicals was in NMR. The machine was an old 90MHz one.in the practical we used...
jake1445
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Oct 17, 2001
12:52 pm
177
hello,sorry for delay,you can predict the pH of your solution as follow:<br><br>pH = 0.5(pKa + pC) where,<br><br>Ka = dissociation constant of the acid.<br>C =...
mras2001eg
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Oct 21, 2001
9:52 am
178
hi, is there any special way to improve the recoveries in SPE .Ofcourse I know 2 factor <br>1-adding 5ml methanol <br>2- pH= 2-3...
sepidehoz
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Oct 24, 2001
9:12 am
179
I'm working with Limonene (orange scented compound). My advisor seems to think it has some use as a base compound for "home" drug synthesis such as GHB or ...
bbrookuk
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Oct 25, 2001
12:10 pm
180
I used to manage a forensic laboratory and have attended numerous meetings in which GHB and analogs were discussed. I don't recall ever hearing limonene...
dsbsci
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Oct 25, 2001
1:17 pm
181
Thanks for the reply...<br>It is actually the "other things" that I was wondering if anyone knew it was used for... I was mentioning GHB as an example. Her...
bbrookuk
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Oct 27, 2001
4:40 pm
182
hello every body , i am in need of an internet site giving the structural formula of drugs.<br>thanks for your care...
mras2001eg
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Oct 28, 2001
7:27 pm
Messages 153 - 182 of 417   Oldest  |  < Older  |  Newer >  |  Newest
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