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Resprep Polymeric SPE Cartridges and 96-Well Plates (Reverse-Phase)

  • Silica-free, bonded polymeric material—no unwanted secondary silica interactions, even with basic compounds.
  • High surface area—higher loading capacity compared to silica-based sorbents.
  • Stable over a wide pH range (0–14)—won’t hydrolyze under extreme conditions.
  • Water-wettable—streamlined conditioning and equilibration steps drastically reduce solvent usage and sample prep time.
  • No flow-rate dependence—maintains retention and capacity after conditioning, even if dried out from vacuum or positive pressure flows.
  • Choose cartridges for high loading capacity; 96-well plates for high throughput and automation.
Ordering Notes

Certificates of analysis for this product are provided electronically. To view and download your certificate, simply visit www.restek.com/documentation

Documentation and Instructions Sheets

Resprep Polymeric SPE Cartridges and 96-Well Plates (Reverse-Phase)

Catalog #

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Additional Product Details

Product Options

Not sure which Restek product is the best for your analysis? Consult a Technical Specialist
Catalog # Clear All
28449 100-pk. 1 mL, 30 mg HLB Resprep Polymeric SPE Cartridge General-purpose for acids, bases, or neutrals; high capacity for polar compounds. Select Deselect

Catalog # 28449

Units
100-pk.  
Volume
1 mL, 30 mg  
Packing
HLB  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
General-purpose for acids, bases, or neutrals; high capacity for polar compounds.  
28450 50-pk. 3 mL, 60 mg HLB Resprep Polymeric SPE Cartridge General-purpose for acids, bases, or neutrals; high capacity for polar compounds. Select Deselect

Catalog # 28450

Units
50-pk.  
Volume
3 mL, 60 mg  
Packing
HLB  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
General-purpose for acids, bases, or neutrals; high capacity for polar compounds.  
28451 30-pk. 6 mL, 200 mg HLB Resprep Polymeric SPE Cartridge General-purpose for acids, bases, or neutrals; high capacity for polar compounds. Select Deselect

Catalog # 28451

Units
30-pk.  
Volume
6 mL, 200 mg  
Packing
HLB  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
General-purpose for acids, bases, or neutrals; high capacity for polar compounds.  
28452 30-pk. 6 mL, 500 mg HLB Resprep Polymeric SPE Cartridge General-purpose for acids, bases, or neutrals; high capacity for polar compounds. Select Deselect

Catalog # 28452

Units
30-pk.  
Volume
6 mL, 500 mg  
Packing
HLB  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
General-purpose for acids, bases, or neutrals; high capacity for polar compounds.  
28453 ea. 10 mg HLB Resprep Polymeric SPE 96-Well Plate General-purpose for acids, bases, or neutrals; high capacity for polar compounds. Select Deselect

Catalog # 28453

Units
ea.  
Volume
10 mg  
Packing
HLB  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
General-purpose for acids, bases, or neutrals; high capacity for polar compounds.  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28454 ea. 30 mg HLB Resprep Polymeric SPE 96-Well Plate General-purpose for acids, bases, or neutrals; high capacity for polar compounds. Select Deselect

Catalog # 28454

Units
ea.  
Volume
30 mg  
Packing
HLB  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
General-purpose for acids, bases, or neutrals; high capacity for polar compounds.  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28455 100-pk. 1 mL, 30 mg MAX Resprep Polymeric SPE Cartridge Acids Select Deselect

Catalog # 28455

Units
100-pk.  
Volume
1 mL, 30 mg  
Packing
MAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Acids  
28456 50-pk. 3 mL, 60 mg MAX Resprep Polymeric SPE Cartridge Acids Select Deselect

Catalog # 28456

Units
50-pk.  
Volume
3 mL, 60 mg  
Packing
MAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Acids  
28457 30-pk. 6 mL, 150 mg MAX Resprep Polymeric SPE Cartridge Acids Select Deselect

Catalog # 28457

Units
30-pk.  
Volume
6 mL, 150 mg  
Packing
MAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Acids  
28458 30-pk. 6 mL, 500 mg MAX Resprep Polymeric SPE Cartridge Acids Select Deselect

Catalog # 28458

Units
30-pk.  
Volume
6 mL, 500 mg  
Packing
MAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Acids  
28459 ea. 10 mg MAX Resprep Polymeric SPE 96-Well Plate Acids Select Deselect

Catalog # 28459

Units
ea.  
Volume
10 mg  
Packing
MAX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Acids  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28460 ea. 30 mg MAX Resprep Polymeric SPE 96-Well Plate Acids Select Deselect

Catalog # 28460

Units
ea.  
Volume
30 mg  
Packing
MAX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Acids  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28461 100-pk. 1 mL, 30 mg MCX Resprep Polymeric SPE Cartridge Bases Select Deselect

Catalog # 28461

Units
100-pk.  
Volume
1 mL, 30 mg  
Packing
MCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Bases  
28462 50-pk. 3 mL, 60 mg MCX Resprep Polymeric SPE Cartridge Bases Select Deselect

Catalog # 28462

Units
50-pk.  
Volume
3 mL, 60 mg  
Packing
MCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Bases  
28463 30-pk. 6 mL, 150 mg MCX Resprep Polymeric SPE Cartridge Bases Select Deselect

Catalog # 28463

Units
30-pk.  
Volume
6 mL, 150 mg  
Packing
MCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Bases  
28464 30-pk. 6 mL, 500 mg MCX Resprep Polymeric SPE Cartridge Bases Select Deselect

Catalog # 28464

Units
30-pk.  
Volume
6 mL, 500 mg  
Packing
MCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Bases  
28465 ea. 10 mg MCX Resprep Polymeric SPE 96-Well Plate Bases Select Deselect

Catalog # 28465

Units
ea.  
Volume
10 mg  
Packing
MCX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Bases  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28466 ea. 30 mg MCX Resprep Polymeric SPE 96-Well Plate Bases Select Deselect

Catalog # 28466

Units
ea.  
Volume
30 mg  
Packing
MCX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Bases  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28467 100-pk. 1 mL, 30 mg WAX Resprep Polymeric SPE Cartridge Strong acids Select Deselect

Catalog # 28467

Units
100-pk.  
Volume
1 mL, 30 mg  
Packing
WAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong acids  
28468 50-pk. 3 mL, 60 mg WAX Resprep Polymeric SPE Cartridge Strong acids Select Deselect

Catalog # 28468

Units
50-pk.  
Volume
3 mL, 60 mg  
Packing
WAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong acids  
28469 30-pk. 6 mL, 150 mg WAX Resprep Polymeric SPE Cartridge Strong acids Select Deselect

Catalog # 28469

Units
30-pk.  
Volume
6 mL, 150 mg  
Packing
WAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong acids  
28470 30-pk. 6 mL, 500 mg WAX Resprep Polymeric SPE Cartridge Strong acids Select Deselect

Catalog # 28470

Units
30-pk.  
Volume
6 mL, 500 mg  
Packing
WAX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong acids  
28471 ea. 10 mg WAX Resprep Polymeric SPE 96-Well Plate Strong acids Select Deselect

Catalog # 28471

Units
ea.  
Volume
10 mg  
Packing
WAX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Strong acids  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28472 ea. 30 mg WAX Resprep Polymeric SPE 96-Well Plate Strong acids Select Deselect

Catalog # 28472

Units
ea.  
Volume
30 mg  
Packing
WAX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Strong acids  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28473 100-pk. 1 mL, 30 mg WCX Resprep Polymeric SPE Cartridge Strong bases Select Deselect

Catalog # 28473

Units
100-pk.  
Volume
1 mL, 30 mg  
Packing
WCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong bases  
28474 50-pk. 3 mL, 60 mg WCX Resprep Polymeric SPE Cartridge Strong bases Select Deselect

Catalog # 28474

Units
50-pk.  
Volume
3 mL, 60 mg  
Packing
WCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong bases  
28475 30-pk. 6 mL, 200 mg WCX Resprep Polymeric SPE Cartridge Strong bases Select Deselect

Catalog # 28475

Units
30-pk.  
Volume
6 mL, 200 mg  
Packing
WCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong bases  
28476 30-pk. 6 mL, 500 mg WCX Resprep Polymeric SPE Cartridge Strong bases Select Deselect

Catalog # 28476

Units
30-pk.  
Volume
6 mL, 500 mg  
Packing
WCX  
Product Name
Resprep Polymeric SPE Cartridge  
Recommended Analytes
Strong bases  
28477 ea. 10 mg WCX Resprep Polymeric SPE 96-Well Plate Strong bases Select Deselect

Catalog # 28477

Units
ea.  
Volume
10 mg  
Packing
WCX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Strong bases  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.
28478 ea. 30 mg WCX Resprep Polymeric SPE 96-Well Plate Strong bases Select Deselect

Catalog # 28478

Units
ea.  
Volume
30 mg  
Packing
WCX  
Product Name
Resprep Polymeric SPE 96-Well Plate  
Recommended Analytes
Strong bases  

Often Purchased with:

Resprep VM-96 vacuum manifold for 96-well plates
Square-well sealing mats for 96-well plates, Clear, Spray coated PTFE/Silicone, 5-pk.

HLB – Hydrophilic-Lipophilic Balance
MAX – Mixed-Mode, Strong Anion Exchange
MCX – Mixed-Mode, Strong Cation Exchange
WAX – Mixed-Mode, Weak Anion Exchange
WCX – Mixed-Mode, Weak Cation Exchange

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