what are peak purity,peak purity index,peak thresold

1)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

What is (Q) point dissolution?

Cipla, Macleods,

Why we are using K2Cr2O7 for control of absorbance in UV?

1 why polyesterene film used for ftir calibration ? 2 why k2cr2o7 is used for control of abs in uv ? 3 why holmium oxide used for control of wavelength in uv

what is the principal of malvern particle sizer & its used in pharma industry

what is the difference between system precision and method precision?

Teva Pharmaceuticals,

In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?

Teva Pharmaceuticals,

what is difference between moisture contents and water contents ?

Cipla, Hetero, USM,

In GC, What does 'Column condensation test' mean by?

Reddy Labs,

same sample on two preapration gives differnt result during hplc analysis

what is titrent,& titrate

Graviti Pharmaceuticals,

Why we are using a Kf Factor range 4 to 6

What is difference between Chromatographic purity and Related substances analysis?

Why we are using the methanol in Kf titration?

Reddy Labs,