Standard Capillaries

XPDF uses bespoke capillaries which interface easily with the beamline sample holders. They come in two main varieties:

Borosilicate Capillaries

Borosilicate is a cheap and easy to work glass which should be used for all cases except those that require temperatures > 500°C.

Chemical Formula	Si_0.798B_0.221Al_0.023Na_0.066K_0.006O₂ (Schott Duran Data Sheet)
Density	2.23 g·cm^-3

Outer Diameter	Inner Diameter	Wall thickness	Length	Volume	filled mass* with ρ = 1 g·cm^-3
1.0 mm	0.78 mm	0.11 mm	40 mm	~ 19 μL	~ 9.5 mg
1.5 mm	1.17 mm	0.165 mm	40 mm	~ 43 μL	~ 21.5 mg
2.0 mm	1.56 mm	0.22 mm	40 mm	~ 76 μL	~ 38.0 mg

Silica Capillaries

Sometimes called "fused quartz" or incorrectly just "quartz", silica has a significantly higher working temperature so can be used for studies > 500°C. We also have some smaller capillaries for very absorbing samples.

Chemical Formula	SiO2 (Fused Quartz Data Sheet)
Density	2.203 g·cm^-3

Outer Diameter	Inner Diameter	Wall thickness	Length	Volume	filled mass* with ρ = 1 g·cm^-3
0.4 mm	0.3 mm	0.05 mm	50 mm	~ 3.5 μL	~ 1.8 mg
1.0 mm	0.8 mm	0.1 mm	50 mm	~ 25 μL	~ 12.5 mg
1.5 mm	1.3 mm	0.1 mm	50 mm	~ 66 μL	~ 33 mg
2.5 mm	2.3 mm	0.1 mm	50 mm	~ 208 μL	~ 104 mg

*Assumed packing fraction of 0.5

Outer Diameter	Inner Diameter	Wall thickness	Length	Description
1/8" (3.178 mm)	2.90 mm	0.139 mm	75 mm	One end sealed
1/8" (3.200 mm)	2.89 mm	0.155 mm	75 mm	Straight through
1/16" (1.578 mm)	1.36 mm	0.110 mm	60 mm	Straight through
1/16" (1.578 mm)	1.36 mm	0.110 mm	60 mm	One end sealed

XPDF Manual

Standard Capillaries

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Borosilicate Capillaries

Silica Capillaries

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