Answer / b.gangatharan,chennai

mixing occur before the pump in low pressure gradient and in high pressure gradient mixing occur after the pump.
Regards,
B.Gangatharan,
chennai.

which brands GC coloumn available in market

4 Answers  

---

In pharmaceuticals formulation OOS applicable in Raw Material(which is not manufacturing in the company. and purchase by approved vendor)).Why?

1 Answers   Orchid,

---

WHY POTASSIUM HYDROGEN PTHALATE IS USED FOR PERCHLORIC ACID? What is difference btw UV detector & RID detector? what is dissolution? What is unit of KF? what is the significant of pH in HPlc?

1 Answers  

---

suppose i give three compounds A,B,C how do u calculate assay of those three componds which method do u prefer

5 Answers  

---

What is definition of RRT and what is the difference between RT and RRT in HPLC

2 Answers  

---

Why perform dissolution multimedia study in dissolution Development

4 Answers   Cipla, Optimus,

---

In Number of Theoretical Plates (N) = 16 (tr/w)2. where tr: retention time, and W: peak width. My Question is here in formula what is 16.Can u explain briefly? ---Veerabhadrarao.M

3 Answers   Micro Labs, Richter Themis, Sun Pharma,

---

what is the difference between loss on drying in ordinary oven technique and vacuum oven technique

4 Answers   Divis Laboratories, Ranbaxy,

---

what is the difference betwen the analytical column & peparative column?

4 Answers  

---

how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

0 Answers  

---

WHICH PRESSURE IS HIGH EITHER INJECTOR OR DETECTOR IN GAS CHROMATOGRAPHY

4 Answers   Avon Organics, Dr Reddys, Reddy Labs,

---

Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?

2 Answers   Vardhman,

---