Answer Posted / prabha

MEthyl-Paraben & Ethyl Paraben

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

3486

---

HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

2248

---

why require to do water content for drug product?

829

---

how many types of balance calibration test?

2300

---

In performance Check of GC Why Hexadecane Peak is Considered 

3045

---

How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

3356

---

how can I make the copper get white bye any salt or acit?

2208

---

before starting analytical method valodation what you checking? and how giving preference to start validation?

806

---

Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2964

---

if you have given one product then how you determine the impurity in that?

744

---

what is mean by extactable and leachable study?

1174

---

how pda detector works over uv?

742

---

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?

3540

---

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?

1907

---

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7544

---