What is control room temperature and which guide line says?

347

could negative ions be produced by bombardment process in mass spectrometry?

193

I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

2054

What is intact assay method development.....?

1119

WHY given much noise PDA dector then VWD Dector

665

In performance Check of GC Why Hexadecane Peak is Considered 

1770

how to get accurate result for Residue on evaporation in purified water

280

Why perchloric acid used for potentiometric titration

1292

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

1096

In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

1609

Tell me something about Vitamin A test method by HPLC

1337

what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

678

what is partion and column chromatography

1034

What is the calibration of uv process and preparation

697

calibrtion procedue of LC-MS

1268