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Tubos Q-sep SPE Quechers
Restek
• Fast, simple sample extraction and cleanup using dSPE.
• Fourfold increases in sample throughput.
• Fourfold decreases in material cost.
• Convenient, ready to use centrifuge tubes with ultra pure, preweighed adsorbent mixes.
Quick, Easy, Cheap, Effective, Rugged, and Safe, the QuEChERS ("catchers") method, developed by the USDA Eastern Regional Research Center1, has become very popular for extraction and clean-up of pesticide residue samples. Our products are available in three centrifuge tube sizes to meet the needs of both extraction and cleanup of a wide variety of sample matrices following various methods.
The researchers developed a simple two-step procedure. First, the homogenized samples are extracted and partitioned, using an organic solvent and salt solution. Then, the supernatant is further extracted and cleaned, using a dispersive SPE technique. Multiple adsorbents are placed in a centrifuge tube, along with the 1mL of organic solvent and the extracted residues partitioned from step 1. The contents are thoroughly mixed, then centrifuged, producing a clean extract ready for a variety of GC or HPLC analytical techniques.2 Validation and proficiency data for the QuEChERS method are available for a wide variety of pesticides in several common food matrices at www.quechers.com
Multiple sorbents are used to extract different types of interferences.
MgSO4 removes excess water
PSA* removes sugars, fatty acids, organic acids, and anthocyanine pigments
C18 removes nonpolar interferences
GCB* removes pigments, sterols, and nonpolar interferences
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Tubos Q-sep SPE Quechers
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| Tubo de Centriguga 50mL, Resprep Q110
| 4g MgSO4, 1g NaCl, 1g trisodium citrate dihydrate, 0.5g disodium hydrogencitrate sesquihydrate
| Mini-Multiresiduo, Europea EN-15662
| 50
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| Tubo de Centriguga 50mL, Resprep Q150
| 6g MgSO4, 1.5g NaOAc
| AOAC 2007.1
| 50
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| Tubo de Centriguga 50mL, vacío
| —
| Mini-Multiresiduo, Europea EN-15662, AOAC 2007.1
| 25
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| Tubo de Micro-Centriguga 2mL Resprep Q210
| 150mg MgSO4, 25mg PSA
| Mini-Multiresiduo, Europea EN-15662
| 100
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| Tubo de Micro-Centriguga 2mL Resprep Q211
| 150mg MgSO4, 25mg PSA, 25mg C18
| Mini-Multiresiduo
| 100
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| Tubo de Micro-Centriguga 2mL Resprep Q212
| 150mg MgSO4, 2.5mg PSA, 25mg GCB
| Mini-Multiresiduo, Europea EN-15662
| 100
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| Tubo de Micro-Centriguga 2mL Resprep Q213
| 150mg MgSO4, 7.5mg PSA, 25mg GCB
| Mini-Multiresiduo, Europea EN-15662
| 100
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| Tubo de Micro-Centriguga 2mL Resprep Q250
| 150mg MgSO4, 50mg PSA
| AOAC 2007.1
| 100
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| Tubo de Micro-Centriguga 2mL Resprep Q251
| 150mg MgSO4, 50mg PSA, 50mg C18
| AOAC 2007.1
| 100
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| Tubo de Micro-Centriguga 2mL Resprep Q253
| 150mg MgSO4, 50mg PSA, 50mg GCB
| —
| 100
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| Tubo de Micro-Centriguga 2mL Resprep Q252
| 150mg MgSO4, 50mg PSA, 50mg C18, 50mg GCB
| AOAC 2007.1
| 100
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| Tubo de Centrifuga 15mL Resprep Q350
| 1200mg MgSO4, 400mg PSA
| AOAC 2007.1
| 50
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| Tubo de Centrifuga 15mL Resprep Q351
| 1200mg MgSO4, 400mg PSA, 400mg C18
| AOAC 2007.1
| 50
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| Tubo de Centrifuga 15mL Resprep Q352
| 1200mg MgSO4, 400mg PSA, 400mg C18, 400mg GCB
| AOAC 2007.1
| 50
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| Tubo de Centrifuga 15mL Resprep Q370
| 900mg MgSO4, 150mg PSA
| Europea EN-15662
| 50
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| Tubo de Centrifuga 15mL Resprep Q371
| 900mg MgSO4, 150mg PSA, 15mg GCB
| Europea EN-15662
| 50
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| Tubo de Centrifuga 15mL Resprep Q372
| 900mg MgSO4, 150mg PSA, 45mg GCB
| Europea EN-15662
| 50
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| Tubo de Centrifuga 15mL Resprep Q373
| 900mg MgSO4, 150mg PSA, 150mg C18
| —
| 50
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| Tubo de Centrifuga 15mL Resprep Q374
| 900mg MgSO4, 150mg PSA, 150mg CCB
| —
| 50
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