why does used dry caffien in HPLC calibration?

0 Answers   Dishman,

---

when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

0 Answers   ABC,

---

Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?

1 Answers  

---

What the difference in loss on drying and residue on ignition

2 Answers  

---

why ur using toulene in hexane in u.v calibration?

3 Answers   Biological.e.limited, Cipla,

---

why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

0 Answers  

---

which pharmacopeoia mentions that caffiene is used as a standard for HPLC calibration? which other standardscan be used for the same?

1 Answers   Hetero, Mylan,

---

What is the diference between residual solvents and organic volatile matter

0 Answers   RA Chem Pharma,

---

what is partion and column chromatography

0 Answers   Emcure,

---

how to select short coloum and long coloumn for new molecule

0 Answers   Rampex Labs,

---

difference between selectivity and specificity

2 Answers   Troikaa Pharmaceuticals,

---

what is use in calibration of conductivitimeter?

1 Answers   Claris Lifesciences, SRF,

---