what is end capping in hplc coulmn

2 Answers   Lupin, Zydus Cadila,

---

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

1 Answers   Reddy Labs,

---

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

0 Answers  

---

What is difference between silica used in TLC and HPLC column

4 Answers   Cipla, Meghmani Organics,

---

In the gas chromatography what is used carrier gas and make up gas?

1 Answers  

---

---

why we inject sample TWICE in ASSAY by HPLC analysis but in RS once?

4 Answers   Aurobindo, DRL, Neuland,

---

How we fix the validity period of a Normal solution and re-standardization due date

3 Answers  

---

What is descriminatory disolution medium ?

3 Answers   Cipla, Graviti Pharmaceuticals,

---

signifcance of detector lenearity in calibration f hplc

3 Answers  

---

various methos to calculate precision in validation methods in HPLC?

2 Answers  

---

what is %labelled amount in content uniformity of dosage unit and its calculation?

0 Answers   Zydus Cadila,

---

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  

---