Why potassium hydrogen pthalate is used for perchloric acid And naoh. Why it is used for both acid and base6 19013
is ther any guidline is available for limt of peak fronting.and what is the limt of peak fronting.2 7988
how would you determine the acceptance criteria for cleaning validationof product A for product B?1 4976
How can we konw that the HPLC column is endcapped? Is it possible to identify visually without COA?2 6616
IN DISSOLUTION S1 STAGE 1 BOWL GOT 52%(Q POINT IS 80%)WHAT WE HAVE DO9 8738
what is the meaning of PURITY AND POTENCY .what is the difference between PURITY and POTENCY5 19275
HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.864
What is the difference between Primay and Secondry Standard ?6 42530
why we have to store the pH electrode in 4.01 buffer ?1 3751
why does used dry caffien in HPLC calibration?
Which std. used for standrdisation of ZnSO4?
What are usp limits for total impurities,unknown impurity
what is difference between zero air gas and o2 gas
How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?
AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
why we do the calibration of limit of stry light in hplc & uv
why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space
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?
What is the difference between qualitative and quantitative analysis (hplc)
explain 5 components of gas chromatography ?
Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?
What is viod volume and peak purity in HPLC?
what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.