Answer / vishal shah

In GC analysis due sample preparation error, if your sample
is open in air so your result may down from initial
analysis,another is during sample preparation if your
tablet crush in morning and you take weight in afternoon
may result is down, Preparation-1: during sample
preparation first you weight crushed tablent in head space
vial than add diluent after all weight(if Time gape between
wieght and adding diluent).
Preparion :-2 During sample preparation first you add
diluent and than add sample may you resule higher than
prepartion :-1

Answer / suhas

Different detector givs different reponse for same sample,
i.e. HPLC have UV or RI and GC have FID or TCD.

difference between quality and quantity

3 Answers  

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how you determine moist.of NaOH sol or NaOH flacks

0 Answers  

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Why using Holmium oxide in UV calibration

8 Answers   Dr Reddys, Matrix, Nakoda Chemicals, Orchid,

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Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?

1 Answers  

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In UV calibration we use Holmium perchlorate solution made in 1.4M perchloric acid The question is that 1.4 M perchloric acid we make is it in water or glacial acetic acid?

4 Answers  

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is ther any guidline is available for limt of peak fronting.and what is the limt of peak fronting.

2 Answers  

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when we use capillary and packed columns in gc

4 Answers   Rakshit Drugs,

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what is the difference between melting range & melting point? Which is more significant?

5 Answers  

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Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

0 Answers  

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What is diffrence between extractable volume and deliverable volume? Answer pls

0 Answers  

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why we use only six bowls for dissolution of a drug

1 Answers   Cipla, Natco, TelePerformance,

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how do start hplc method development? how much sample required for developing the method development?

3 Answers   BMS, Cipla, Indoco Remedies, Sun Pharma,

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