1.5 mL Microcentrifuge Tubes, PP, Natural — 208-3387-060 | 200/Bag | Caplugs® Evergreen

1.5 mL–Compatible Universal SPE Columns, Coarse Filter (90–135 µm), PP, Natural — 200/Bag

These Caplugs® Evergreen universal SPE columns feature an integrated 90–135 µm coarse-filter disk molded from FDA-compliant polypropylene, supplied non-sterile in 200/Bag packaging. The universal body geometry adapts to 1.5 mL, 2 mL, and 5 mL collection tube positions and is compatible with gravity-flow, vacuum manifold, and benchtop centrifuge workflows — making part number 208-3387-060 a flexible, format-independent choice for labs running multiple SPE protocols. The coarse pore size maximizes flow rate through high-particulate matrices where finer filter grades would blind prematurely.

Technical Specifications

Applications

• Solid-phase extraction (SPE) of high-particulate environmental matrices — soil and sediment extracts, high-solids surface water, and industrial effluent samples where coarse pore size prevents premature filter blinding
• Cell lysate and bioreactor broth clarification prior to downstream purification or analysis
• Gravity-flow and vacuum-manifold SPE workflows requiring a format-independent column body
• Centrifuge-assisted extraction using standard 1.5 mL or 2 mL collection tubes at benchtop g-forces
• Method scouting and protocol development across multiple collection tube formats without purchasing format-specific columns

Compatibility

The universal column body is engineered to seat in standard 1.5 mL microcentrifuge tube positions, 2 mL collection tubes (the primary format for most universal-column workflows), and 5 mL collection tubes — though users should verify outside-diameter fit when using the 5 mL format, as tube tolerances vary by manufacturer. These columns also adapt to multi-port vacuum SPE manifolds equipped with universal tube holders and to any gravity-flow SPE bench stand, eliminating the need for length-matched manifold holders that length-specific columns require. Labs building a complete universal PP filter-grade set can pair these coarse-filter columns with the 208-3388-060 (medium filter, 45–90 µm) and 208-3389-060 (fine filter, 15–45 µm) from the same Caplugs® Evergreen series.

Chemical Resistance

Quality & Procurement

Made in USA under ISO 9001 quality management, these Caplugs® Evergreen universal SPE columns are produced from FDA-compliant polypropylene resin and are certified BPA-free and phthalate-free. The integrated filter disk is molded directly into the column body, eliminating loose frits and ensuring consistent pore geometry across every unit in the bag. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, typically the same business day for stocking items; volume pricing is available for labs ordering ten or more bags.

Frequently Asked Questions

What makes a "universal" column different from a standard SPE column?
The universal body geometry is designed to fit multiple collection tube formats — 1.5 mL, 2 mL, and 5 mL positions — and works across gravity-flow, vacuum manifold, and centrifuge platforms without requiring a length-matched holder. This makes it well suited for method development or for labs running more than one SPE workflow on shared equipment.

Why choose the 90–135 µm coarse filter instead of a finer grade?
Coarser pore sizes allow high-particulate matrices — such as soil extracts, cell lysates, and bioreactor broths — to pass through without blinding the filter disk. If your sample is largely particle-free, a medium (45–90 µm) or fine (15–45 µm) filter grade from the same series will provide tighter particulate retention.

Are these columns compatible with organic solvents used in typical SPE elution steps?
Polypropylene offers broad compatibility with the solvents most commonly used in SPE, including acetonitrile, methanol, ethanol, and isopropanol, as well as dilute acids and bases. Chlorinated solvents such as chloroform or methylene chloride and aromatic solvents such as toluene are not recommended for use with PP.

Can these columns be autoclaved or reused?
Polypropylene is autoclavable as a material; however, SPE columns are manufactured and validated as single-use consumables. Reuse is not recommended, as carryover contamination and filter integrity loss between samples can compromise results.