Sigma-Aldrich
504394 
Supelco 

Empty glass SPE Tube with PTFE frits, 20 μm porosity 

volume 6 mL, pk of 24  
 
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Descriptions
Features and Benefits  
Inert glass tubes, PTFE frits and PTFE closures
• Reduce interferences and contamination of your reaction mixtures
• Resistant to aggressive solvents and chemical solutions
• High flow frit porosity allows for gravity or rapid vacuum rinsing
 
Properties
packaging 
pk of 24
 
volume  
6 mL
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504394 (Supelco)



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