LC PEEKsil Tubing

PEEKsil® tubing

(Fused Silica Lined PEEK tubing)

PEEKsil is polymer-sheathed fused silica tubing, available in outside diameters of 1/32 inch or 1/16 inch, and now in 0.36 mm. The sheathing polymer is polyether ether ketone (PEEK) that is mechanically strong and has ideal characteristics for sealing with conventional metal or polymer ferrule systems. PEEKsil may be used as a direct replacement for conventional stainless steel as well as a replacement for PEEK tubing used in liquid chromatography systems. The 0.36 mm OD material can be used directly in place of 0.36 mm OD fused silica tubing.

Advantages of PEEKsil

  • Robust Tubing

The PEEK polymer exterior coating and the fused silica combination (Figure 1) makes PEEKsil very robust. PEEKsil is therefore capable of withstanding high pressures, making it ideal for capillary LC and LC-MS applications.

  • Smooth Wall Surface

The fused silica internal wall of PEEKsil provides an exceptionally smooth surface, free of imperfections, which ensures excellent flow characteristics. Stainless steel, in contrast, has a very rough and pitted inner wall surface, which has detrimental effects on the performance of a liquid chromatography system.

  • Solvent Compatibility

PEEKsil is compatible with most organic solvents. PEEKsil is resistant to strong acids and has an effective pH range of 0-10. PEEKsil is not compatible with hydrofluoric acid.

  • Inertness

Fused silica is renowned for its extremely low absorption characteristics.

  • Precision of Inside Diameter

The inside diameter of fused silica tubing can be produced far more precisely and with a greater range of sizes than is available with stainless steel (see Table 1).

  • Zero Metal Contact in LC

The sample and mobile phase do not come into contact with metal in PEEKsil tubing.

  • Ease of Connection

PEEKsil is inherently straight, but is very flexible, which makes connection between columns, detectors and injectors easier than with more rigid stainless steel tubing.

  • Applications of PEEKsil

PEEKsil can be used in all applications where solvents must be pumped under high or low pressures with little flow resistance or possibility of contamination. Typical uses are in LC connecting lines, sample loops and sample lines.

**Manufactured under license granted by Agilent Technologies Incorporated.

Figure 1. PEEKsil Tubing cross-section

PEEKsil Tubing:
Orange 25 µm (± 1 micron)
Beige (Natural) 50 µm (± 3 micron)
Black 75 µm (± 3 micron)
Red 100 µm (± 3 micron)
Purple 150 µm (± 5 micron)
Yellow 175 µm (± 5 micron)
Blue 200 µm (± 5 micron)
Grey 300 µm (± 5 micron)
Bone White 530 µm (± 10 micron)
 
 
Pressure Rating
25-50 micron 25,000 psi
75-100 micron 15,000 psi
150-175 micron 8,500 psi
200-530 micron 6,000 psi
 
 

Length in mm

Outer Diameter
Inner Diameter
Length
Part no. OD
(mm)
ID
(mm)
Length Pack
Size
0624201 1/16" 0.2 500 2
0624202 1/16" 0.2 50 5
0624203 1/16" 0.2 100 5
0624204 1/16" 0.2 200 5
0624205 1/16" 0.2 150 5
0624214 1/16" 0.3 50 5
0624215 1/16" 0.3 100 5
0624216 1/16" 0.3 150 5
0624217 1/16" 0.3 200 5
0624218 1/16" 0.3 500 2
0624225 1/16" 0.025 50 5
0624226 1/16" 0.025 100 5
0624227 1/16" 0.025 150 5
0624228 1/16" 0.025 200 5
0624229 1/16" 0.025 500 2
0624230 1/16" 0.15 50 5
0624231 1/16" 0.15 100 5
0624232 1/16" 0.15 150 5
0624233 1/16" 0.15 200 5
0624234 1/16" 0.15 500 2