Why we use nhexane inplace of hexane in mobilepase preparation

2403

---

Why we use nhexane inplace of hexane in mobilepase preparation

2457

---

What is the difference between the photochemical reaction and photo-dynamic reaction?

2567

---

What is importance of pH in the Heavy metal test and How it effect on the test results?

2284

---

As per ICH related substances stability trend limit from initial to shelf life

3254

---

where can I get a universal self scorer book - maths in discount ?????

2896

---

Practically why we get negative absorption in UV SPECTROPHOTOMETER when the time of cleaning sample analysis. is negative absorption in Uv valid or not?

2404

---

the insect not useful toman is

2412

---

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

---

In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

3129

---

How to caluclate %w/v& %w/w ple give examples solids&liquids 10%NAOH W/W 10%W/V- 20%HCL W/W &W/V

2503

---

what is meaning of wet analysis.

5746

---

why using HCLO4 in potentiometry?. what are the chacterestics of HCLO4.

3694

---

the greatest diversity of animal and plant species occurs in

2251

---

iam usig ph buffers merk. manually how to prepare ?

2278

---