Answer / raja

Void volume is dead volume. Sample inject column outlet

what is the purpose of Buffer in any titration?Ex:In determination of hardness of water we use ammonia ammoniachloride buffer in titration with EDTA.Why?

13 Answers   Amity, Prakriti, Sr Comunications,

---

how to correct peak when peak comes broader in shape? How to do calibration of HPLC?

2 Answers   Mankind,

---

why did uyou choose analytical chemistry?

1 Answers  

---

how to prepare working standard in our laboratory aganist reference standard ?

4 Answers   Merit Biolabs, Unichem,

---

what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

1 Answers   GVK, Millennium,

---

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

1 Answers  

---

why we are using polystyrene film for calibration of I.R spectroscopy?

12 Answers   Abbott, Andhra Organics, Intas, Kemwel, Reddy Labs, RRR, Veritas, Zydus Cadila,

---

what is difference b/w spectroscopy, Spectrometry and Spectrophotometry ?

1 Answers   Reddy Labs,

---

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?

11 Answers   Aurobindo, GVK, Sohan Healthcare,

---

Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

1 Answers   IDA,

---

HOW TO CALCULATE THE MASS OF UNKNOWN IMPURITY IN LC-MS? AND WHAT IS THE ROLE OF FRAGMENTATION IN LC-MS ?

1 Answers  

---

What is the principle of GC/HPLC ?

4 Answers   BioCan, Biocon, Megafine Pharma,

---