What is the reason of RT change in new column v/s old column in HPLC

Answers were Sorted based on User's Feedback



What is the reason of RT change in new column v/s old&n..

Answer / naresh

Regular usage of old column some stationary phase is loss inside the column compared to new column so compound retention inside the column varies between these two columns

Is This Answer Correct ?    7 Yes 0 No

What is the reason of RT change in new column v/s old&n..

Answer / arul

old coloumn inside some particles may be formed, new coloumn no particles that is reason

Is This Answer Correct ?    2 Yes 0 No

What is the reason of RT change in new column v/s old&n..

Answer / dipty

Because the old column might not be washed properly so the stationary phase which is not used up that is if the column is new it has more chance to hold up the drug.

Is This Answer Correct ?    3 Yes 3 No

Post New Answer

More Analytical Chemistry Interview Questions

who is the father of HPLC?

6 Answers   Cipla, IPCA,


How will you select mobile phase in HPLC Method Development

4 Answers  


In specificity what parametrs are consider why that parametrs

2 Answers  


In Dissolution Test why limit is define Q+5% what is the role of +5%.

0 Answers  


why do we adjusted ph in the mobilphase

9 Answers   Cipla, Dr Reddys, Reddy Labs,






For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

0 Answers  


Which column is more polar, C8 or C18?

6 Answers   Cipla, Glenmark, Laurus, Torrent Power,


how calculate column dead volume in hplc ?

3 Answers   Torrent Pharma,


HOW TO CALIBRATE HPLC OVEN

1 Answers   Mylan,


what is difference between GC & GC-HS

11 Answers   SRF,


how to decide for one product require water content or LOD?

0 Answers  


Why pH Range has been fixed as 0 to 14 ?

1 Answers   Akums, Cipla, Matrix, SUN,


Categories
  • Organic Chemistry Interview Questions Organic Chemistry (342)
  • Inorganic Chemistry Interview Questions Inorganic Chemistry (123)
  • Analytical Chemistry Interview Questions Analytical Chemistry (1387)
  • Physical Chemistry Interview Questions Physical Chemistry (62)
  • General Chemistry Interview Questions General Chemistry (478)
  • Chemistry AllOther Interview Questions Chemistry AllOther (190)