I came to understand that I am only doing a check of absorbance instead of internal calibration. Anyone with useful information should please help.
The link provides several methods depending on your needs.
https://www.perkinelmer.com/lab-solutions/resources/docs/TCH_Validating_UV_Visible.pdf
Hi
First you must prepare a series of standard solutions, determine the λmax, finally measure the absorbance of all standards at λmax, the measurements must satisfy Lambert - Beer's law, where the relationship between concentration and absorbance in direct proportionality, then the standard (calibration) curve must be a straight line.. from this we can conclude that the instrument works well without any deviation..
Regards
Firstly each UV-Visible spectrometer has technical guide in wich you found all procedures
if note you ask another time good luck
Dear Sir,
I agree with the posted answers and the answer of Mohamed ist very right.
Your question remains obscure and obsolete until you give us (the answerers) the name and typ of your spectrometer (single , dual or arrays).
The technical guide is ONLY VALUABLE if you have :
- a new or old spectrometer with new lamps.
- Have you the possibility to contact the maintenance of the spectrometer Cy (p.e. Perkin-Elmer) and ask to test or exchange the lamps. It is always expensive.
- If you use an old spectrometer with old lamps, you 'll obtain no valuable measures.
The answer of Qasim is only valuable wirh a good maintened spectrometer.
- You must be familiar with the cut off of cuvettes (quartz or plastic) and the cut off of solvents used (quality spectranal ) and not pro analysis.
-You must ill your cuvette at the right level with solvent.
JRG
Thanks all. Still look forward for a detailed procedure.
756S Uv-vis spectrophotometer
No. 756S15018
Hi! Check the link you get useful information.
Calibration of spectrophotometer
http://www.slideshare.net/DeepakShilkar/calibration-of-spectrophotometer
I suggest you call the company where your spectrometer is purchased from. They will provide you with the standards and methods.
Hi,
according to your answer, it is a single beam spectrometer. This info belongs always when you posted a good question. If not , you act and post like a pupil and not like a scientist.
756S & 759S UV-Vis Spectrophotometer
Brief Introduction :
756S & 759S UV-Vis Spectrophotometer both are single beam, automatic scanning UV - Vis
Spectrophotometer products . The instrument has the features like delicate structure, high
performance specification, long-life light source, various convenient functions and etc. They could
make the qualitative and quantitative test in material research, pharmaceutical analysis,
Biochemical and clinical examination, analysis of water quality control, food inspection and the
other fields.
JRG
According to the procedure described by Yahya Mohamed Qasim
Also proposed by Anthony Moore FT has information document detailing how can calibrate the UV-Visible Spectrophotometer.
Finally, if doubts persist or specificity model of your computer, consult the manufacturer's manual and seek advice technical experts of the manufacturing company.
Success in the task
regards
Dr. Jose Luis Garcia Vigil
Most of the Spectrophotometers have an in-built calibration mechanisms. If yours is different, why not contact the manufacturers if the manual did not give the procedure for calibrating the spectrophotometer. I just checked the Google and found the attached document. I have not read it, but see if it will help.
- Badges
- Science method
- Similar topics
- Methodology
- Absorption Spectroscopy