SPI Supplies^® Brand PTFE Centrifuges Tubes / Test Tubes

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The SPI Supplies® Brand PTFE Test Tubes are manufactured from pure virgin PTFE for maximum consistency and homogeneity which results in a "super-smooth" internal surface finish. The PTFE test tubes are inert and usable to 280°C. Why PTFE test tubes? Simply put, contaminants can be leached out of glass and then detected in one's samples with many of today's modern instruments of analysis. Leaching has occurred from time immemorial, of course, but it is only in the relatively recent past that these trace impurities could be detected. However, if PTFE test tubes are used, one can avoid completely this potential problem. Two versions of the product are available: a) Screw cap and b) Lip only and no screw cap.

	Volume (ml)	Height (mm)	OD (mm)	SPI #	Each		In Stock
Round bottom with lip only (no cap):
	8	100	12	01936-AB	$12.55		Yes
	17	100	18	01937-AB	14.43		Yes
	50	140	25	01938-AB	21.96		Yes
Conical bottom with lip only (no cap):
	13	110	16	02074-AB	$14.11		Yes
	18	120	18	02077-AB	17.69		Yes
	45	150	25	02013-AB	28.22		Yes
Round bottom with screw cap:
	8	105	12	02043-AB	20.39		Yes
	17	105	18	02044-AB	25.10		Yes
	50	145	25	02045-AB	31.36		No
Conical bottom with screw cap:
	13	110	16	02080-AB	25.10		Yes
	18	120	18	02103-AB	28.22		Yes
	45	150	25	02130-AB	37.63		Yes