Answer / chemdeep

usually the same solvent is used in uv for blank readings
that is used in the sample preparation.

Answer / rama

If your medium is given solvents, then that solvents can be
used as blank other wise that can't be.

Answer / padmarao

Water ,mthanol,ethanol are below UV cut off range because used as a blank

Answer / shiva

all samples are mostly soluble in these solvents and also
having low cost.Methanol is mainly used for blank.

Answer / nitesh pal

all that solvent not absorb uv light i.e not show absorbance in uv region

Answer / nabil

Methanol for example absorbs at wavelengths below nm, and
water below 190 nm if we use methanol-water mix as a blank
we would have to use a wavelength grater than 205 nm to
avoid false reading.

Answer / radha

they do not give any reaction with sample did n't give peaks

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and what is purpose of taking a specified amount of 57.0-63.0mg?

1 Answers   Reddy Labs,

what is procedure of actual procedure for registration of drug?

0 Answers  

What is descriminatory disolution medium ?

3 Answers   Cipla, Graviti Pharmaceuticals,

Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong? 

5 Answers   Claris Otsuka, Ranbaxy,

How can you calculate manually "Slope" in pH calibration?

2 Answers   Hetero,

how can we calculate void volume?give its importance in brief

1 Answers   Natco,

for which product require to do content uniformity? what is limit of cu?

0 Answers  

Shall i use a same hplc column for two different products.?

3 Answers  

what is principle of XRD?

3 Answers   Cipla,

What id the resolution factor

1 Answers  

how pyridine can be analysed other than GC?

1 Answers  

how require to interprit the method precision data of hptlc?

0 Answers