what is the purpose of Buffer in any titration?Ex:In determination of hardness of water we use ammonia ammoniachloride buffer in titration with EDTA.Why?

13 Answers   Amity, Prakriti, Sr Comunications,

---

why wetlab is called as wetlab

6 Answers  

---

What is mean by peak tailing in case of GC?

5 Answers  

---

if instrument calibration fails then what require to do?

0 Answers  

---

various methos to calculate precision in validation methods in HPLC?

2 Answers  

---

why did uyou choose analytical chemistry?

1 Answers  

---

Why do we use KCl ,K2Cr207,Toulene & Halonium oxide for the caliberation of UV

2 Answers   Apotex,

---

what is the working priniciple of ph, what are parts in ph meter

1 Answers  

---

what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

0 Answers   Wockhardt,

---

hii, i'm had a sample of 1L that gone through extraction & evaporation. i used 0.5ml of methanol for reconstitution before injecting the sample to HPLC. i made a calibration curve using a standard solution but now i'm confused about how to display the concentration i got from the sample. for ex. i got 0.2ug/ml how i'm gonna explane this is for the 1L ? please help .. i'll really appreciate it thanks

1 Answers  

---

if relative response factor is 1.07, to select how much value

1 Answers   Natco,

---

are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????

1 Answers   Beni Suef University, Graviti Pharmaceuticals, Sri Krishna Pharmaceuticals,

---