Phenom Support Answers
A collection of questions that received good ratings and feedback from our customers.
- In the QuEChERS method, can I shake my samples in the extraction step and dSPE step for longer time than recommended?
- In the QuEChERS method, how much (in volume) initial extract and dSPE extract should I expect after centrifugation?
- In what circumstances would you choose the 1 mL QuEChERS dSPE kit and the 8 mL dSPE kit?
- Is it necessary to dry down & reconstitute the extract from the dSPE step in the QuEChERS method for LCMS analysis?
- Is it possible to analyze basic protein hydrolysates with EZ:faast?
- Is it possible to do SPE for sugar analysis?
- Is it possible to inject EZ:faast amino acid standards directly?
- Is it possible to reverse flush an Axia packed column?
- Is it possible to use the EZ:faast LC/MS kit with other detectors besides MS?
- Is Security Guard ultra bio-inert?
- Is SecurityCap compatible with solvent reservoirs containing THF?
- Is the EZ:faast SPE sorbent the same for both the hydrolysate and the free physiological kits?
- Is the QuEChERS method applicable to my work?
- Is there an advantage to using a Linear column rather than single pore GPC columns?
- Is there any dead volume in our collection plates?
- Is there any way to recover planar pesticides absorbed by graphitized carbon black?
- Is there anything I can do about protein/peptide carryover?
- Is there one hydrolysis procedure you can recommend when using EZ:faast?
- Lux Amp Series: How much Ammonium Hydroxide do I use to adjust the 5mM Ammonium Bicarbonate solution to pH 11?
- Lux Amp Series: How often should I make new mobile phase? Do I need to make completely new mobile phase or can I keep adding new mobile phase to the old mobile phase?
- Lux Amp Series: Is the pH of the mobile phase stable?
- Lux Amp Series: More tips and tricks
- Lux Amp Series: Will the high amount of ammonium salts (ammonium bicarbonate and ammonium hydroxide) cause issues with my mass spec detector?
- My column lifetime is consistently short, what is the issue here?
- My customer is asking for an application for VOCs on SPME-GC-MS
- My initial extraction solvent is methanol but analytes should be extracted by RP mechanism. What should I do?
- My LC column is leaking, what could be causing this? What can I do?
- My LC method backpressure is cycling, what could be causing this?
- My LC method seems very sensitive to pH, causing inconsistent retention times from day to day. What can I do to prevent this?
- My QuEChERS analysis includes quite a few acidic pesticides. Will PSA lower their recoveries? What modification can I adapt?