Answer Posted / suresh

in reverse phase chromatography we use sp is non ploar,and
mp is polar ,where as in normal phase chromatography we use
sp polar, and mp is non polar,so most of the industries
follow reverse phase chromatography,because mostly organic
compounds are in polar nature and we reduce the Retention
time

in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

807

---

why we are using hexane in calibration of number of drop per mL

1792

---

if instrument calibration fails then what require to do?

1017

---

Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

757

---

What is the difference between spectro meter and spectro photo meter?

11618

---

what is mean by covalidation

830

---

What is related substance by HPLC impurity limits as per USP?

1153

---

why we should take dst factor for below 1%moisture samples

2716

---

how to set sample and standard concentration in RS method?

967

---

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7604

---

if peak get problamatic then what require to do?

860

---

pharma industries oriented

2294

---

what is the purge flow & how to calculate

2729

---

How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

2613

---

from where i get mortar pastle for glass bottle crush? it's required for testing of it?

2328

---