Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why reference flow required during hplc analysis on rid?

1 3545

why hydrogen and zero air used for flame ignition in gc?

1 6626

How we get DST moisture 15.4-16.0%. what is the calculation or method behind it.

2 14989




What is viod volume and peak purity in HPLC?

1328

what is the results if we use ODScolumn instead of BDS column ,(ther parameter is same for column) in assay method ?

3 6932

How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

1002

what is the use of tap density apparatus? why we calculate it? what is the difference between the bulk density and tap density?

Alchemist, Alembic, Apex,

1 2221

from where i get mortar pastle for glass bottle crush? it's required for testing of it?

884




what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

1045

What is the difference between void volume and delay volume in HPLC?

3 14772

What is the purpose of octyl silane columns?

2600

how many types of Proceing methods?

Reddy Labs,

7 7023

What is the column performance and column efficiency?

Reddy Labs,

2 11367

What are the primary standards?

6 8345

why we want incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ? What is the use to incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ?

1 2680


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Un-Answered Questions { Analytical Chemistry }

how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1118


are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????

697


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

1075


Why sodium hydroxide used for maintain pH of phosphate buffer

909


For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

857






i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1406


Tell me about analytical method validation in QC

1786


how can I make the copper get white bye any salt or acit?

967


what is the principle involved in turbidometry and nephelometry ?

2373


Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

845


In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

1964


Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

1211


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

940


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1257


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?

896