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Orchid Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Why we use holmium oxide,perchloric acid for uv/vis calibration

 4 24266

Why caffeine as a reference standard used for calibration of HPLC?

 11 53260

what is relationship between absorption and transmittance in u.v.?

 11 29870

Why using Holmium oxide in UV calibration

 8 42831

full name of OOS & OOT ? Dercribe it with details ? why this is needed in pharma industry ?

 10 35250

what is dead time in hplc?

 3 17815

what is the significant of pH in HPlc?

 5 13651

Explain about Low pressure gradient and High Pressure gradient systems in HPLC?

 4 27570

HPLC Calibration was done in Reverse Phase, but not in normal phase why explain?

 11 30056

what are the standard methods for HPLC?

 2236

When performing Moisture content how to you say only Methanol react with water not product Explain?

 2 9212

what is the meaning of PURITY AND POTENCY .what is the difference between PURITY and POTENCY

 5 25611

As per USP what is RSD limit of volumteric solution of three replicate analysis

 10 25232

In standard weight box used for calibration of analytical balance there are two numbers (Qty) of 20mg, 200mg,2.oGM weights. Why?

 2 14637

How do we fix the sample concentaryion in hplc method development. what is the basis?Thanks in advance

 4 19247

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Orchid Analytical Chemistry Interview Questions


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