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Steritop Threaded Bottle Top Filter

Sterile, 150 mL process volume, 0.22 µm pore size, GP, 33 mm, polyethersulfone membrane, pkg of 12

bottle top sterile filter unit, bottle top vacuum filter, bottle top vacuum filtering unit


polyethersulfone membrane
polystyrene funnel(s)
polystyrene housing

Quality Level


sterile; irradiated

product line





pack of 12 ea


45 °C max. temp.


2.4 mL (hold-up volume)


sterile filtration: suitable


74 mm


150 mL


12.5 cm

filter diam.

73 mm

filtration area

40 cm2

funnel capacity

150 mL


Express PLUS

pore size

0.22 μm pore size


inlet funnel
33 mm outlet thread(s)

shipped in


General description

The Stericup® vacuum filtration system is the most efficient single-use, disposable process for sterile media preparation. It combines a Steritop filter unit with a receiver flask for processing and storing volumes from 150 mL to 1,000 mL in a single, ready-to-use format. Its no-tip, easy-grip flask design and balanced profile improve stability during filtration in tight laminar flow hoods, and the convenient labeling and packaging make it easy to open and track each device. The bottom of the receiver flask is slightly recessed, so you can conveniently stack capped flasks after filtration, maximizing precious refrigeration space. You can also use Steritop bottle-top devices with your own sterile capture flask or bottle.

Features & Benefits

Millipore Express PLUS membrane for fastest flow rates and low protein binding to minimize absorption and protein loss, which affect downstream performance and costs

Durapore membrane for ultra-low protein binding for minimum absorption and protein loss

Snug tight packaging, easy tear-open pouch, and convenient label designs make storing, opening and tracking your devices easy and efficient

Stable base and easy grip design of the Stericup device enable any user to comfortably perform all stages of the workflow in a laminar flow hood

Recessed bottom of Stericup receiver flasks allows flasks to be stacked easily in refrigerated spaces


Sterilization of Aqueous Solutions (150 mL to 1 L); Sterile Filtration of Culture Media and Buffers with High-Value Protein or Small Molecule Component


Sterile, 150 mL process volume, 0.22 µm pore size, GP, 33 mm, polyethersulfone membrane, pkg of 12

Other Notes

Directions for Use
  • Organism Retention: Microorganisms
  • Mode of Action: Filtering
  • Application: Sterile filtration
  • Intended Use: Sterile filtration of laboratory reagents, buffers, and media.
  • Instructions for Use: Please refer to Instructions for Use section of Stericup® and STERITOP® user guide
  • Storage Statement: Store in dry location
  • Disposal Statement: Dispose of in accordance with applicable federal, state and local regulations.

Legal Information

EXPRESS PLUS is a trademark of Merck KGaA, Darmstadt, Germany
STERITOP is a registered trademark of Merck KGaA, Darmstadt, Germany
Stericup is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

10-13 - German Storage Class 10 to 13

Certificate of Analysis

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Certificate of Quality

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