Answer Posted / latif ahmed [ozone pharma,guw

1.caffeine is available in anhydrous form.
2.Shows maxima at two different wavelength ie.205nm & 273nm
3.Cheap & easily available.

How do we fix the sample concentaryion in hplc method development. What is the basis?

1251

---

Why dissolution test is not performed in all of the products

2582

---

if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?

1049

---

For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2357

---

what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4538

---

How much is the standard area for glc analysis

2333

---

In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

3192

---

which are the diffrent batches in the pharmaceuticals?

864

---

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2893

---

Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

799

---

why does used dry caffien in HPLC calibration?

2082

---

what is mean by 40 in the dissolution basket mesh size?

839

---

which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

2215

---

how decide the clining method and cleaning method validation require for this perticular products?

822

---

Which parameter require to do for analytical method equivalency?

820

---