Simple 3-Step Procedure

• (1) Extract: Place ILE Cap on sample-containing vessel. Invert vessel such that sample is directly exposed to immobilized solvent (polymer), allowing targeted compounds to partition between the two phases based on their relative affinities for each. Agitate vessel to accelerate the partitioning process by disrupting a boundary layer that forms at the sample-polymer interface. Continue this process until equilibrium is reached or nearly reached.
   

• (2) Back-Extract: Remove ILE Cap from sample vessel, tap off any residual liquid, and place it on suitable back-extraction vial that contains a small amount of method-appropriate solvent -- a suitable back-extraction vial permits the recovery of analytes from small volumes of solvent. Invert vial to allow contact between solvent and analyte-enriched polymer. Compounds partition between polymer and solvent in accord with their relative affinities for each. The partitioning process is accelerated by agitating the vessel, and is allowed to occur until equilibrium is reached or nearly reached.
   

• (3) Analyze: The remaining solvent in the back-extraction vial may be immediately analyzed by GC or HPLC, or archived for later analysis.

  ILE Caps see NEW Improved Cap Design

ILE Cap Cat#s

• The Immobilized Liquid Extraction (ILE) Cap is a regular bottle or vial cap with a siloxane-elastomer coated septum.

• ILE Caps utilize their immobilized elastomer coating to extract organic compounds from complex aqueous matrices such as waste water, urine, or serum while ignoring interferants.

• ILE Caps have been designed to utilize beneficial aspects of other sample preparation procedures while avoiding their numerous shortcomings.

Interested in custom method development?

Key features:

• · Minimizes solvent usage and subsequent disposal
• · Simplifies analytical steps and procedures
• · Reduces labor costs
• · Increases throughput
• · Improves data precision
• · Eliminates need for sorbent conditioning
• · Eliminates possibility of analyte breakthrough
• · Allows for archiving of samples for later analysis
• · The standard lab has all equipment necessary to use ILE caps (no need to buy expensive equipment)
• · Works with a wide range of vials and bottles (compatibility notes)

Minimal solvent Use
Minimal manpower
Proven recoveries for Many applications

Shaking or stirring accelerates equilibrations
A co-solvent also Helps

Typically 30 minutes for 60ml sample

Compatible Vials

Any Headspace Vial with 24-400 or 24-425 Thread
( a standard)
10, 20, 40, 60ml

Adaptors for these to Accuform MicroVials 1ml and 3ml
available Soon !

Available from Restek

08

NEW Website

Chromalytic Technology - Australian Distributors 'specialising in chromatography'
:  GC, HPLC & Fluid Transfer Products; Instrumentation  Home : Sections

07