T-stereo
Lab Vacuum Filtration Pump VP-20PRO, 20L/min, Negative Pressure
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Highlights
- 【LIGHT & PORTABLE】Laboratory vacuum pump is compact in design and small in size, making it easy to carry. Non-slip suction cup feet ensure the vacuum pump runs stably and does not shake when working.
- 【PRESSURE ADJUSTABLE】The vacuum pump operates at a speed of 20 liters per minute, with adjustable pumping pressure via a knob, significantly reducing laboratory filtration time. It is suitable for various liquids where gravity filtration alone is excessively time-consuming.VP-20PRO is a Adjustable pressure negative pressure vacuum pump.
- 【OIL-FREE】Oil-free small diaphragm pumps, which means there is no need for regular maintenance and no need to dispose of, or replace, oil, providing clean operation without contamination.
- 【HOW TO USE】The air pump is only suitable for vacuuming, it can't enter liquid. The first step is to fix the complimentary filter membrane in the middle of the rubber tube, the second step is to fix the two ends of the rubber tube to the vacuum pump and the filter unit, the third step does not need to be set up for a one-button start thus getting the best experience.
- 【WIDELY USED】Vacuum pumps provide a reliable source of vacuum for solvent filtration, distillation, vacuum drying, extraction and other experimental steps. Widely used in aerators, nitrogen blowers, solid phase extractors, solvent filters, air samplers and other applications requiring vacuum pressure.
Why You'll Love It
- Draws up to 20 liters per minute to speed up slow liquid filtration tasks
- Pressure adjustment knob lets you fine-tune the negative vacuum strength for your setup
- Oil-free diaphragm mechanism eliminates regular fluid maintenance and keeps work environments clean
- Compact housing with suction cup feet stays stable on the benchtop during operation
- Simple one-button start simplifies daily lab procedures like distillation and extraction
Pros
- +Oil-free design requires no messy fluid maintenance
- +Adjustable pressure knob for custom negative pressure
- +Suction cup feet prevent shaking during operation
- +Simple one-button start
- +Includes complimentary filter membrane
Cons
- -Cannot handle direct liquid intake
- -Requires manual placement of inline filter membrane
Detailed Review
The T-stereo VP-20PRO is a compact laboratory vacuum pump designed to speed up routine solvent filtration, distillation, and extraction tasks. By providing negative pressure, it helps pull liquids through filters far faster than passive gravity methods. It is an ideal benchtop tool for labs that regularly handle vacuum drying, solid phase extraction, or air sampling.
Equipped with an oil-free small diaphragm design, the pump provides clean operation without any risk of oil contamination. This setup means you never have to replace, top up, or dispose of pump oil, keeping routine upkeep to a minimum. The unit delivers an operating speed of up to 20 liters per minute, and a dedicated control knob lets you manually adjust the pumping pressure to match the requirements of your specific experimental setup.
Daily operation is straightforward thanks to a simple one-button start. To keep the benchtop steady, non-slip suction cup feet secure the lightweight housing and prevent vibration or shaking while running. Setup involves placing the included filter membrane in the middle of your rubber tubing, then attaching the ends to the pump and your filtration apparatus.
One key limitation is that this air pump is strictly built for vacuuming air and cannot have liquid enter its intake. Users must properly install the inline filter membrane to protect the internal diaphragm from moisture or fluid pull-through during intense filtration runs.
Verdict: The T-stereo VP-20PRO is a reliable choice for laboratory workers who need adjustable negative pressure without the maintenance hassle of oil-based pumps. It suits anyone looking to streamline solvent filtration, extraction, and drying applications safely and cleanly.
Who Should Buy It
A great fit if you:
- Need to accelerate slow gravity filtration using negative vacuum pressure.
- Prefer an oil-free pump to avoid messy fluid changes and sample contamination.
- Require adjustable pressure for processes like distillation, drying, or solid phase extraction.
- Want a compact benchtop unit that stays in place with suction feet.
Consider something else if you:
- Need a pump that can directly intake and transfer liquids.
- Require positive pressure air pumping rather than negative vacuum suction.
FAQ
Can this pump draw liquids directly through its intake?
No, the pump is designed only for vacuuming air and cannot have liquid enter the unit.
Does this unit require oil changes?
No, it uses an oil-free diaphragm design that requires no regular oil replacement or disposal.
How do you adjust the vacuum pressure?
The negative pumping pressure can be adjusted directly using the built-in control knob.
What applications is this vacuum pump used for?
It provides vacuum pressure for solvent filtration, distillation, vacuum drying, extraction, nitrogen blowers, air samplers, and aerators.
Photos
Product Specs
| Specification | Details |
|---|---|
| Package Dimensions | 11 x 7 x 5 inches |
| Item Weight | 4 pounds |
| Manufacturer | T-stereo |
| ASIN | B0FZJ6GDRP |
| Date First Available | November 4, 2025 |
| Best Sellers Rank | #155,461 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #58 in Lab Vacuum Pumps |
