Superficially Porous or Sub 2µm Stationary HPLC Phases

1.

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* 1. In ultra-high-pressure (UHPLC) or ultra-fast LC (UFLC), what factor(s) do you consider most important when speeding up your analysis? (Please select all that apply)

Speed of a single run

Total analysis cycle time

Reproducibility

Durability

Ease of use

Low Carryover

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* 2. On average, how long does one total analysis cycle (injection, injector clean-up, data collection, S/W and/or Network overhead) add to your chromatographic run (data acquisition time)?

<30 seconds

<60 seconds

>1 minute

>1.5 minute

Do not know

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* 3. In your estimation, is high-pressure capability a requirement for performing fast LC?

Yes greater than ~6000psi (400bar)

Yes, greater than ~10,000psi (690bar)

Yes, greater than ~15,000psi (1000bar)

No

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* 4. What particle column size(s) are you currently using?

<2µm

2.1-3 µm

5 µm

Porous/Solid Core technology

Do not know

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* 5. How much of a concern is the ease of transfer of established methods to ultrafast methods?

1 (highest)

2

3

4(lowest)

None, will only consider new assays for such methods.