what is the difference between loss on drying in ordinary oven technique and vacuum oven technique
4 14004what is the difference between LOSS ON DRYING IN ORDINARY OVEN TECHNIQUE AND VACUUM OVEN TECHNIQUE
6 23822why we are using only lead standard solution for Heavy metals test? what is the purpose of this?
4 12449what is the difference between the ordinary loss on drying technique and vacuum oven technique?
1 7945what is the difference between gc& hplc. why we r not calculating purity by gc for final products
5 154731)why use benzophenon,uracil in hplc calibration. 2)why use sucrose in polarimeter calibration. 3)what is S/N ratio, noise and drift in hplc 4)how we can find lod and loq in method validation
1 13788What is the molarity of a NaOH solution if 32.47ml. isrequired to titrate 0.6013g of potassium hydrogen phthalate?
2 8751
what is classification of elemental impurities? what is risk assement in elemental impurities?
HPLC in sequences analysis was taken wrong method and one blank & Standard is running so what to do
What is the nature of the bonding interaction between a metal and an olefin? : Polymer Chemistry
Why do different polymers have different properties? : Polymer Chemistry
Explain how buffer works?
What forms the basis for colorimetric determination?
can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?
what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means
Which is the highly polar and highly non polar column in HPLC?
Why we are use glass viscometer, and what is calculation manual calculation formula as per USP. How many types of viscometre in glass type viscometer.
What is the role of stannous chloride?
Why are metals often good catalysts? : Polymer Chemistry
what is the extinction coefficient for Indomethacin or at 319nm wave length.
WHAT TYPE OF QUESTION ASK FOR POST SENIOR TECHNICAL ASSISTANT IN DRDO
Why only 1.2 million lux hours require in photostability study?