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Senior

Troubleshooting in amino acid column pico-tag...

HPLC
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Mohamed Nabil asked 9 m ago
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votes
2
answers
176
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Pressure

I have agilent 1260 infinity II instrument and i found that pressure is reaching 400 without installation of column , what is the problem ? and how to...

HPLC
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Ibrahim asked 9 m ago
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votes
2
answers
125
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Impurity Limit.

How to decide the known/unknown impurity limit in Related substance??...

HPLC
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Vasim asked 9 m ago
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0
answers
189
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If your HPLC column had a personality, what would it be?
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HPLC fun_poll hplc
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youhana Hosny asked 9 m ago
3
votes
4
answers
287
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How injection volume effect on peak shape or results.?

How injection volume effect on peak shape or results.?...

HPLC
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Atif Ali asked 9 m ago
0
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1
answers
253
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Qc analyst

Capacity factor calculation...

HPLC
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Tasnim Mahmoud asked 9 m ago
4
votes
3
answers
303
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Peak area variability in DMSO analysis

Hello, I am running an impurity analysis method for DMSO with the following parameters: FID Temperature: 250 °C Injector Temperature: 250 °C Column...

Gas Chromatography (GC) area dmso usp gcchromatography variability
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slucas asked 9 m ago
1
votes
2
answers
223
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methylcobalamin analysis

Preparation of a sample of methylcobalamin in liquid form, in low concentration for analysis in HPLC. Any ideas?...

HPLC
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Amanda Zanatta asked 9 m ago
0
votes
1
answers
205
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SPLASH Lipidomix standard analyzed by HILIC method
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Does anyone try to run SPLASH Lipidomix Quantitative Mass Spec Internal standard by HILIC method on Agilent LC-QTOF? I do not see peaks on the chromat...

Mass Spectrometry (MS)
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Alina asked 9 m ago
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1
answers
264
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S/N ratio

How to calculate the S/N ratio?...

HPLC
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