Answer Posted / sendhil k

Ep

what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2669

---

what is procedure of actual procedure for registration of drug?

2010

---

2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

2218

---

Related substance method equivalency on control sample or spiked sample?

764

---

I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

3539

---

in which situation ion pair require to use?

814

---

Colorimtry

1652

---

if you get peak in blank then what require to do?

974

---

why digestion require in icpms?

770

---

In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

3175

---

Please give idea about method development for cleaning method and how maco level establish

748

---

USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2011

---

If combination product how require to identify which imp is of which api?

839

---

why require the ph, buffer during hplc mobile phase?

859

---

Identify problem faced when mass spectroscopy is used with HPLC system ?

1861

---