Answer / praveen kumar

The chromatogram recording the detector response when only the mobile phase emerges from the column

what is the defination of calibration & verification?

9 Answers   Divis Laboratories,

---

What is rs test why we are performing rs test?

0 Answers  

---

Wath is the differenc between two column HPLC wich have the samme support , lenth , pore size, etc.. But different name .for exemple : Spherisorb / lichrosorb

2 Answers   NDA,

---

what is internal standard define

2 Answers   Apex, Coromandel International Limited, Hikma Pharmaceuticals, IPCA,

---

difference between precision & accuracy.

1 Answers   Laurus,

---

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

0 Answers  

---

What is the Deference between Bulk density & Tap density ?

2 Answers   Hikma Pharmaceuticals, Neuland, Reddy Labs,

---

During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?

1 Answers   Mylan, Torrent Pharma,

---

What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

0 Answers  

---

If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?

0 Answers  

---

in dissolution why pool sample needed? in which type of drug pool sample need?

0 Answers   Torrent Pharma,

---

what are the different methods of analysing related substances test,what are LOD AND LOQ .HOW TO REPORT IMPURITIES WHEN LOD AND LOQ LIMITS R SPECIFIED

3 Answers   Dr Reddys,

---