why we are using in ph calibrations ph4,7,9.2 buuffers only?

3 Answers   Reddy Labs, Unichem,

---

If vendor having more imp than monograph then how to proceed? and how to set spec?

0 Answers  

---

What is the lab normality??

3 Answers   DRL, Tagros,

---

What is difference between Chromatographic purity and Related substances analysis?

3 Answers  

---

why we are using benzene, anyline in acetic anhdride assay titration method?

0 Answers  

---

why we get negative values in uv when i placed sample which has some concetration but not in standard

1 Answers   Nirma,

---

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

0 Answers  

---

In the method validation proceedure,lod & loq calculation we use the formulae for LOD=3.3*SD/slope and for LOQ=10*SD/slope,why we use 3.3 & 10 in the formulae?

1 Answers  

---

Why Na lamp is used in polarimeter?

5 Answers   Vimta Labs,

---

differnc btw c18 and c-8 column

3 Answers   Cipla,

---

In acid base titration, after complet consumption of HCl by NaOH, addition of next drop of NaOH will give pink colour with phenolpthalein indicator. Why this pink colour appear? Why not blue, black, green or anything elese?

3 Answers  

---

HOw do i calculate the number of theoretical plate on a HPLC chromatography

2 Answers   Laurus,

---