CELLTREAT® 229711 | 150mL Bottle Top Filter, 0.45µm PES, 50mm Diameter, Sterile — No Bottle Included

The CELLTREAT® 229711 is a 150mL bottle top filter with 0.45µm PES membrane — sterile, with a 50mm diameter PES membrane designed for high flow and low binding, and 0.45µm pore size ideal for solution clarification. MSE Supplies The 229711 is the standalone bottle top filter format — the filter component only, designed for labs that already have CELLTREAT solution bottles or other standard 45mm threaded bottles and need only the replacement filter. Bottle top filters fit on CELLTREAT® solution bottles or other standard 45mm threaded solution storage bottles. Bottle top filters do not include solution bottles. MSE Supplies Sterile by gamma irradiation. RNase-free, DNase-free, and non-pyrogenic.

⚠️ Critical Distinction — Bottle Top Filter Only. Solution Bottle NOT Included. The 229711 is the filter component only — it does not include a solution bottle or cap. This is the key difference from the CELLTREAT 229701 which is a complete Filter System including bottle top filter, solution bottle, and cap. The 229711 is the correct choice for labs that:

• Already have CELLTREAT solution bottles or compatible 45mm threaded bottles
• Want to purchase filter tops and bottles separately for cost or inventory flexibility
• Are replacing only the filter component after reusing an existing bottle
• Prefer to use a specific bottle brand or size not included in the complete filter system packages

For a complete ready-to-use filtration system including solution bottle and cap, see the CELLTREAT 229701 (150mL, 0.45µm PES Filter System).

229711 vs. 229701 — Bottle Top Filter Only vs. Complete Filter System:

⚠️ Important — 0.45µm Does NOT Provide Sterile Filtration 0.45µm PES membrane is ideal for solution clarification. MSE Supplies The 229711 is designed for particle removal, solution clarification, and pre-filtration — not sterile filtration. For sterile filtration at 150mL scale, the 0.22µm bottle top filter version is the correct product. The 229711 is appropriate for HPLC mobile phase preparation, solution pre-filtration, buffer clarification, and any 150mL application where removal of particles ≥0.45µm is required without a sterility requirement.

0.45µm PES Membrane — High Flow Rate with Low Protein Binding Polyethersulfone (PES) membrane is for high flow and low binding. MSE Supplies The hydrophilic PES membrane provides fast flow rates under vacuum with low protein binding — minimizing loss of proteins and biologically active components during clarification of biological solutions, enzyme preparations, and buffers.

Easy-to-Read Molded Graduations and Bold Pore Size Identification Easy-to-read molded graduation marks on bottle top filter. Bold easy-to-read printed membrane and pore size for easy identification. MSE Supplies The 0.45µm pore size is boldly printed on the filter housing — critical for preventing accidental use of the clarification filter in applications requiring 0.22µm sterile filtration.

Angled Hose Barb Adapter, Curved Design, and Improved Filter Support Angled hose barb adapter fits three size hose diameters and prevents the filter from tipping. Curved bottle design for easy handling. Improved filter support provides faster flow rates. MSE Supplies The angled barb accommodates 6mm, 9mm, and 12mm ID vacuum tubing without adapters and prevents tipping during filtration.

Fits Standard 45mm Threaded Bottles — Broad Compatibility Bottle top filters fit on CELLTREAT® solution bottles or other standard 45mm threaded solution storage bottles. MSE Supplies The 229711 is compatible with the full CELLTREAT solution bottle family as well as other standard 45mm threaded bottles from major laboratory suppliers.

Lot Number and Expiration Date on Every Bottle Top Printed lot number and expiration date on every bottle top. MSE Supplies Full lot traceability for regulated laboratory environments and quality management documentation.

Compatible Replacement — Cross-Reference Guide

The CELLTREAT® 229711 is a direct compatible replacement for 150mL 0.45µm PES standalone bottle top filters from several major manufacturers:

• Corning® 431118 — Corning 150mL bottle top filter, 0.45µm PES, no bottle
• Millipore® SCGVUSS01RE — Stericup 150mL 0.45µm PES bottle top filter only
• Thermo Fisher Nalgene™ 296-4545 — Nalgene 150mL 0.45µm PES bottle top filter
• VWR® 10040-456 — VWR 150mL 0.45µm PES bottle top filter, no bottle

Competitor brand names and catalog numbers are referenced for cross-referencing purposes only. Compatibility should be verified for your specific bottles and protocol.

Complete CELLTREAT® Bottle Top Filter Family — Key Formats:

Key Features

• 150mL bottle top filter — filter component only, no solution bottle included
• 0.45µm PES membrane — particle removal and solution clarification
• ⚠️ 0.45µm does NOT provide sterile filtration
• Fits CELLTREAT solution bottles and all standard 45mm threaded solution storage bottles
• 50mm membrane diameter — optimized for 150mL small-volume filtration
• PES membrane — high flow rate with low protein binding
• Improved filter support — sustained flow rates under vacuum
• Easy-to-read molded graduations on bottle top filter
• Bold printed membrane material and 0.45µm pore size — easy identification
• Angled hose barb adapter — fits 6mm, 9mm, and 12mm ID tubing, prevents tipping
• Lot number and expiration date printed on every bottle top
• Sterile — gamma irradiation
• RNase-free and DNase-free — certified
• Non-pyrogenic

Supported Applications HPLC mobile phase preparation and sample pre-filtration at 150mL scale, small-volume buffer and solution clarification, biological solution particle removal prior to analysis, pre-filtration before 0.22µm sterile filtration, and any 150mL 0.45µm clarification application where a compatible solution bottle is already available.

Technical Specifications