อุปกรณ์กรอง Syringe Filter CHROMAFIL PTFE

CHROMAFIL® PTFE

Syringe filters with polytetrafluoroethylene membrane

Features

Hydrophobic membrane
For nonpolar liquids and gases
Very resistant towards all kinds of solvents as well as acids and bases Flushing with alcohol, followed by water, makes the originally hydrophobic membrane more hydrophilic.

Ordering information · CHROMAFIL® Xtra

Polytetrafluoroethylene syringe filters labeled for method validation and certification
Type	Pore size	Membrane		Standard pack		BIG-BOX
	[µm]	dia. [mm]		Filters/pack	REF	Filters/pack	REF
PTFE-20/25	0.20	25	labeled	100	729207	400	729207.400
PTFE-45/25	0.45	25	labeled	100	729205	400	729205.400
PTFE-100/25	1.0	25	labeled	100	729247	400	729247.400

Ordering information · CHROMAFIL®

Color-coded polytetrafluoroethylene syringe filters
Type	Pore size	Membrane	Color code		Standard pack		BIG-BOX
	[µm]	dia. [mm]	top	bottom	Filters/pack	REF	Filters/pack	REF
O-20/3	0.20	3	colorless	colorless	100	729014
O-45/3	0.45	3	colorless	colorless	100	729015
O-20/15 MS	0.20	15	yellow	colorless	100	729008	800	729008.800
O-45/15 MS	0.45	15	colorless	colorless	100	729009	800	729009.800
O-20/25	0.20	25	yellow	colorless	100	729007	400	729007.400
MS = minispike on filter exit

CHROMAFIL® filter membranes

Chemical compatibility of filter materials

The following table lists the chemical compatibility of our CHROMAFIL® materials. The chemical compatibility depends on several parameters such as time, pressure, temperature and concentration. In most cases, CHROMAFIL® filters will have only short contact with a solvent.

In these cases they may be used despite of limited compatibility.
For example, a PTFE filter with PP housing does not liberate any UV-detectable substances during filtration of 5 mL THF, although PP shows only limited resistance towards THF.

Solvent	Material
	MV	CA	RC	PA	PTFE	H-PTFE	PVDF	PES	PET	GF	PP
Acetaldehyde	–	–		o							o
Acetic acid, 100 %	–	–	–	–
Acetone	–	–					–	–
Acetonitrile	–	–
Ammonia, 25 %	–	–	o	–					o
Benzene							o				o
n-Butanol				o
Cyclohexane				o
Dichloromethane		–		–				–			–
Diethyl ether	o	o									o
Dimethylformamide	–	–	o				–	–
1,4-Dioxane	–	–					o	–			o
Ethanol	–
Ethyl acetate	–	–									o
Ethylene glycol	o	o
Formic acid, 100 %		–	o	–					o
Hydrochloric acid, 30 %	–	–	–	–					–
Methanol	–	–
Nitric acid, 65 %	–	–	–	–	o	o	o		o		–
Oxalic acid, 10 % aqueous		–		–
Petroleum ether		<font face=”tahoma,arial,helvetica,sans-serif” size
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Posted in Chromatography Filter, Filter & Extract, Products

อุปกรณ์กรอง Syringe Filter CHROMAFIL PTFE

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