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Categories >> Sciences >> Chemistry >> Analytical Chemistry
 
 


 

 
 Organic Chemistry interview questions  Organic Chemistry Interview Questions (227)
 Inorganic Chemistry interview questions  Inorganic Chemistry Interview Questions (96)
 Analytical Chemistry interview questions  Analytical Chemistry Interview Questions (866)
 Physical Chemistry interview questions  Physical Chemistry Interview Questions (57)
 General Chemistry interview questions  General Chemistry Interview Questions (284)
 Chemistry AllOther interview questions  Chemistry AllOther Interview Questions (71)
Question
HOW CAN V CALIBRATE FTIR ? PLZ EXPLAIN ME
 Question Submitted By :: Analytical-Chemistry
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
FT-IR IS CALIBRATED BY USING POLYSTYRENE FILM

PUT THE POLYSTYRENE FILM INTO THE SAMPLE HOLDER
AND SCAN IT FIXED WAVE NUMBERS ARE OBTAINED THEY ARE
3060
2849
1942
1601
1583
1154
1028
ACCEPTANCE CRITERIA IS +/- 1 CM

RESOLUTION: THE DIFFERENCE BETWEEN THE ABSORBANCE AT THE
ABSORBATION MINIMUM AT ABOUT 2870 CM AND THE ABSORBATION
MAXIMUM AT ABOUT 2849.5 CM SHALL BE MORE THAN 0.33

THE DIFFERENCE BETWEEN THE ABSORBANCE AT THE
ABSORBATION MINIMUM AT ABOUT 1589 CM AND THE ABSORBATION
MAXIMUM AT ABOUT 1583 CM SHALL BE MORE THAN 0.08.
 
Is This Answer Correct ?    22 Yes 0 No
A.sudhakar
 
Answer
# 2
FTIR IS CALIBRATED BY USING POLYSTIRENE FILM THICKNESS OF
0.04mm(AS PER USP)0.05 mm(AS PER IP. THE RESOLUTION IN
ABSORBANCE B/T 2849.5 AND 2870 IS 0.33, IN B/T 1583 AND
1587 IS 0.08.
FREEQUENCY : EVERY DAY BEFORE USING AND MAJOR MAINTENANCE
JOB.
 
Is This Answer Correct ?    7 Yes 6 No
T N Rao
 
 
 

 
 
 
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what is a drug? Aurobindo 11
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why we are doing seal wash and needle wash?   1
why we are adjusting the ph in buffer solution preparation   2
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why KF factor is between 4.5 to 7.5 mg/ml ? why ? why sometime pyridine is used in analysis like in raw material solvent like acetone etc? GVK 6
Any molecule is filing for ANDA purpose, what are the dissolution requirements / specifications needed ? Ipca 1
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what is regration method in method validation , how we can calculate it. Cipla 2
what is GLP? Which industries it requried? Aurobindo 1
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For more Analytical Chemistry Interview Questions Click Here 
 
 
 
 
 


   
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