. 2015 Nov 1;1(3):FSO17. doi: 10.4155/fso.15.15

Table 1. . Physical and physicochemical parameters of single wall carbon nanotubes.

SWNT	Reported diameter (nm)^†	Calculated diameter (nm)^‡	Mean length (µm)^†	ε_ave (ml/cm.mg)^§	Possible Chiralities^#	Impurities (wt%)		Manufacturing method
NanoIntegris PureTubes (batch P09–562)	1.2–1.7	1.44	0.6	53.1 ±2.9	(24,2) S	<0.5^¶; <5^††	0.23 Ni	Arc discharge
					(16,10) M		0.05 Y
					(14,9) S (19,2) S		0.06 Fe
					(13,8) S
					(14,4) S
NanoIntegris IsoNanotubes-M (batch M09–910)	1.2–1.7	1.41	0.4	51.7 ±6.6	(23,5)	<1^¶; <5^††	0.07 Ni	Arc discharge
					(14,14) (22,4)		0.38 Y
					(16,10)		0.72 Fe
					(13,10) (17,5)		5.29 I
					(18,0)
					(12,6)
NanoIntegris IsoNanotubes-S (batch S09–248)	1.2–1.7	1.56	0.6	54.2 ±3.1	(18,11)	<1^¶; <5^††	0.07 Ni	Arc discharge
					(14,12) (12,11)		0.38 Y
					(12,8) (15,4)		0.72 Fe
					(13,5)		5.29 I

^†Data from NanoIntegris Technical Data Sheet histograms.

^‡Diameter was calculated [47] using C₁ = 223.5 cm^-1?nm, C₂ = 12.5 cm^-1.

^§Extinction coefficient (ε_ave). Data taken from [47].

^#Chirality for the main resonant nanotubes was determined from Raman spectra according to [50,51].

^¶Metal catalyst.

^††Carbonaceous.

M: Metallic; S: Semiconducting; SWNT: Single wall carbon nanotubes