Phenom Support Answers

A collection of questions that received good ratings and feedback from our customers.

• What solvents are compatible with Impact?
• What solvents are Lux compatible with?
• What solvents do I have to analyze using USP Chapter 467, Residual Solvents/Organic Volatile Impurities?
• What SPE method do you recommend for nitrofurans from milk?
• What the particle sizes do you have for Claricep flash columns?
• What tubing do I need for PN AH0-6050, the 12-position drying attachment?
• What type of sample is Strata Eco-Screen designed for?
• What types of compounds will Phree retain besides phospholipids?
• What types of therapeutic oligonucleotides can be extracted from biological fluids with Clarity OTX?
• What typical pressures do you see for bioZen?
• What volume of low concentration analyte can be injected before sample overload?
• What would be a typical gradient profile for intact analysis of mAbs?
• What's the best way to clean my column if I analyze samples with high sugar concentrations?
• What's the best way to dispose of my old HPLC columns?
• What’s in product number AH0-8278 (Strata® Syringe And Adaptor Kit Includes: Syringe And Adaptor Caps For SPE Tubes)?
• When developing a method on Luna Omega Sugar, what are good concentrations of standards to start out with?
• When doing headspace injection, what can I do to avoid peak splitting of some analytes? A direct injection on same system is giving the same split peaks.
• When I reconstitute my extract obtained using the QuEChERS method in the LCMS mobile phase solvent, precipitates appear. What can I do to overcome this?
• When I run a gradient LC on one instrument, the results are acceptable. However, transferring them to another system, there are differences in retention. What could be the cause of this?
• When is it appropriate to use Strata-XL instead of Strata-X?
• When might SLE offer a better solution than SPE?
• When using Phree, should I add sample first or solvent first?
• When using Phree, there are white precipitates in the elution. Why?
• When your sample matrix is not listed in the SPE method development tool, how do you determine which matrix to choose?
• Where are the ghost peaks in my LC chromatogram coming from?
• Which buffers are used for BioZen WCX?
• Which chiral phase should I use for my aromatic compounds?
• Which elution system works best with WCX?
• Which filter should I use for dilute protein solutions?
• Which guard can I use with Onyx 10 mm ID columns?