Phenom Support Answers
A collection of questions that received good ratings and feedback from our customers.
- Which is the best acidic buffer to use for my reversed phase analysis?
- Which is the most common ion source for GC and how does it work?
- Which Kinetex C18 phase (C18, XB-C18 or EVO) would be most applicable for my method?
- Which Kinetex particle size should I use (1.7 or 2.6 µm)?
- Which Lux phase should I use?
- Which type of ferrule should I use?
- Which type of Verex vials are recommended for TOC (Total Organic Content) testing?
- Which types are Verex Vials are used for SPME applications?
- Which Zebron WAX column should I select for use with my GC-MS?
- While using Phree, is it possible to add the organic solvent before adding sample? Will the solvent leak through the plate before sample addition?
- While using the QuEChERS extraction kit, I accidentally spilled some of the salts when dispensing into the centrifuge tube. Will my results be affected?
- Why are 3 batches recommended for method validation?
- Why are hybrid silica's preferred for reversed phase analysis of oligonucleotides
- Why are my retention times for organic acids on Rezex ROA or RHM columns sometimes irreproducible?
- Why are vespel/graphite ferrules available preconditioned?
- Why do my SPE cartridges have different bed heights?
- Why does ion-exchange SPE provide cleaner extracts than a reversed phase extraction?
- Why does the QuEChERS method recommend homogenizing frozen sample with dry ice/liquid nitrogen and extracting samples while frozen?
- Why have glass wool in your GC inlet liner?
- Why is a polymeric SPE material sometimes recommended over a silica-based SPE material?
- Why is centrifuge speed sometimes described in × g and sometimes in RPM?
- Why is centrifuge speed sometimes described in “x g” and sometimes in RPM? (Pretreatment series)
- Why is drying required before elution in a given SPE method?
- Why is it a problem to inject a sample in a stronger solvent than the starting mobile phase?
- Why is it important to pretreat samples into proper loading conditions?
- Why is it important to remove surfactants during sample preparation?
- Why is it necessary to optimize the elution step in SPE?
- Why is it necessary to optimize the generic method?
- Why is it not recommended to inject inorganic acids or bases onto a GC column?
- Why is potassium preferred as a counter-ion for size exclusion chromatography?