Pinnacle DB Biphenyl 1.9µm, 3µm & 5µm Columns (USP L11) / Chromatography Columns / Restek.com

Instruction Sheets

Ordering Notes

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Catalog #	Particle Size	Length	ID	Units
Catalog # 9409232	Particle Size 1.9 μm	Length 30 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409252	Particle Size 1.9 μm	Length 50 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409212	Particle Size 1.9 μm	Length 100 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409332	Particle Size 3 μm	Length 30 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409352	Particle Size 3 μm	Length 50 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409312	Particle Size 3 μm	Length 100 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409362	Particle Size 3 μm	Length 150 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409335	Particle Size 3 μm	Length 30 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409355	Particle Size 3 μm	Length 50 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409315	Particle Size 3 μm	Length 100 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409365	Particle Size 3 μm	Length 150 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409532	Particle Size 5 μm	Length 30 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409552	Particle Size 5 μm	Length 50 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409512	Particle Size 5 μm	Length 100 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409562	Particle Size 5 μm	Length 150 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409522	Particle Size 5 μm	Length 200 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409572	Particle Size 5 μm	Length 250 mm	ID 2.1 mm	Units ea.	Select
Catalog # 9409535	Particle Size 5 μm	Length 30 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409555	Particle Size 5 μm	Length 50 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409515	Particle Size 5 μm	Length 100 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409565	Particle Size 5 μm	Length 150 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409525	Particle Size 5 μm	Length 200 mm	ID 4.6 mm	Units ea.	Select
Catalog # 9409575	Particle Size 5 μm	Length 250 mm	ID 4.6 mm	Units ea.	Select
Catalog # 940933E	Particle Size 3 μm	Length 30 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940935E	Particle Size 3 μm	Length 50 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940931E	Particle Size 3 μm	Length 100 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940936E	Particle Size 3 μm	Length 150 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940953E	Particle Size 5 μm	Length 30 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940955E	Particle Size 5 μm	Length 50 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940951E	Particle Size 5 μm	Length 100 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940956E	Particle Size 5 μm	Length 150 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940952E	Particle Size 5 μm	Length 200 mm	ID 3.0 mm	Units ea.	Select
Catalog # 940957E	Particle Size 5 μm	Length 250 mm	ID 3.0 mm	Units ea.	Select

Chromatogram

Compounds

Description

Specifications

Tech Tips

Application-dedicated HPLC columns have longer lifetimes

Prolong the useful lifetimes of your HPLC columns by dedicating specific columns to specific applications, like analysts who use ion pair reagents often do. Sample components, mobile phase conditions, etc. can cause changes within a column, and sometimes effects of these changes are negligible until the column is used in another application. Although this practice can involve using more columns at one time, and calls for careful bookkeeping, longer lifetimes for individual columns can amount to significant savings.

Avoid the Void Volume

A speedy analysis is important, but avoid the temptation to elute important sample components near the void volume of your column. When you ignore this guideline, you are locked into using the mobile phase as the sample solvent; any admixing of sample solvent and mobile phase causes a baseline disturbance that makes quantification highly unreliable. Also, it is highly likely that the peak at the void volume will soar off-scale. You will avoid these and other potential problems by adjusting conditions such that the first target compound elutes with a capacity factor (k′) of at least 2.0.

Documentation