Caplugs® Evergreen 5" Sample Preparation Columns, PP with Medium Filters (45–90 µm), Non-Sterile, 200/Bag
The Caplugs® Evergreen 5" Sample Preparation Columns are molded from chemically robust polypropylene and fitted with medium-porosity filters (45–90 µm) for reproducible gravity-flow separations. Bench scientists rely on these columns for solid-phase extraction, peptide and oligonucleotide synthesis cleanup, and routine resin packing where consistent flow and low non-specific binding matter.
Technical Specifications
| Product Type | Sample Preparation Column |
| Length | 5" |
| Material | Polypropylene (PP) |
| Filter / Frit | Medium porosity, 45–90 microns |
| Sterility | Non-Sterile |
| Pack Size | 200/Bag |
| Country of Origin | USA |
Applications
- Solid-phase extraction (SPE) sample cleanup prior to LC-MS or HPLC
- Gravity-flow resin packing for small-scale chromatography
- Peptide and oligonucleotide synthesis washing and cleavage steps
- Affinity and ion-exchange resin batch purification
- Sample desalting and buffer exchange workflows
- Gel filtration and size-based separations using packed media
Quality & Procurement
labsupplies.com is an authorized Caplugs® Evergreen dealer, shipping these columns from US inventory and Made in USA. Each bag carries a lot number to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available for repeat and high-volume procurement.
Frequently Asked Questions
What does the "medium" filter rating of 45–90 microns mean?
Medium-porosity frits retain resin beads and particulates in the 45–90 µm range while allowing buffers and eluates to pass under gravity. This balance suits most general-purpose SPE and resin-packing workflows.
Are these columns sterile?
No. These columns ship non-sterile. For applications requiring sterility, users should validate an appropriate sterilization method compatible with polypropylene.
What is the column material and is it solvent compatible?
The columns are molded from polypropylene (PP), which offers broad compatibility with aqueous buffers and many common organic solvents used in sample preparation. Verify specific solvent exposure against your protocol.
How many columns come in each pack?
Each unit of sale is 200/Bag. The bag is lot-numbered for traceability, and tiered pricing applies to larger orders.