Answer Posted / samba siva reddy.p

detector checking with caffiene soln bcz caffiene have 2 max and 1 minima wavelenths,we inject std stock soltn(caffiene soln) with diffrent wavelengths.
201 to 209= 205(maxima)
241 to 249=245(minima)
269 to277=275(maxima)
limits+ or -2

How do we fix the sample concentaryion in hplc method development. What is the basis?

1211

---

What is diffrence between extractable volume and deliverable volume? Answer pls

4579

---

What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2690

---



2328

---

Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

1474

---

what is the structure of DOWEX-50

5521

---

What is delay volume?

1399

---

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2834

---

if you given one product then which tests you will perform?

709

---

What is stray light in uv what are units for stray light

1654

---

What is the formula for relative diffrence for standard solution in solution stability in validation?

810

---

WHY given much noise PDA dector then VWD Dector

2101

---

how the compound separate in coulunm,explain

2534

---

What is similarity factor and its use in api strength?

1303

---

why require the ph, buffer during hplc mobile phase?

868

---