Lab Filtration Products

Vacuum Pump

The Microlab series of diaphragm vacuum pumps provides oil-free, continuous operation for laboratory filtration and vacuum applications. Designed for precision and reliability, these pumps operate without friction, produce no heat or exhaust, and feature Nitrile Rubber diaphragms for corrosion resistance and long life. They are suitable for use with high-accuracy chromatography systems and as backing pumps for turbo molecular pumps, delivering stable vacuum or controlled air flow across a range of conditions.

Oil-free operation ensures no contamination of samples or environment, ideal for sensitive analytical work
Nitrile Rubber diaphragm resists corrosion and provides extended operational life under continuous use
Self-cooling air draft system enables 24-hour continuous operation without overheating
Low noise level below 60 dB allows use in quiet lab environments

Key Benefits

What This Product Gives You

Oil-free operation ensures no contamination of samples or environment, ideal for sensitive analytical work
Nitrile Rubber diaphragm resists corrosion and provides extended operational life under continuous use
Self-cooling air draft system enables 24-hour continuous operation without overheating
Low noise level below 60 dB allows use in quiet lab environments
Adjustable pressure design supports both vacuum and controlled steady air flow within a defined range
High evacuation speed and stable performance make it suitable for chromatography and sample preparation systems

Oil-free operation with no working medium required
Nitrile Rubber diaphragm for chemical resistance and durability
Self-cooling air draft system for 24-hour continuous operation
Adjustable pressure control for vacuum or steady air flow
Low noise level below 60 dB at full operation
Stable vacuum performance with no friction or heat generation
Suitable for use as a backing pump for turbo molecular pumps
Designed for laboratory-scale precision and reliability

Where It Is Used

Applications And Buyers

Application Scenarios

Supporting vacuum filtration in pharmaceutical QC labs for sample concentration and clarification
Providing backing vacuum for turbo molecular pumps in high-vacuum analytical instruments
Powering vacuum-assisted extraction in environmental and food safety testing
Maintaining consistent vacuum during long-duration chromatographic runs in R&D
Operating in clean environments where oil contamination must be avoided

Who It Is For

Pharmaceutical and biotech laboratories requiring oil-free vacuum for sensitive sample analysis
Environmental and food testing labs handling volatile or reactive compounds
R&D departments using high-precision chromatography systems that demand stable vacuum
Laboratory distributors seeking reliable, low-maintenance vacuum pumps for resale
OEMs integrating vacuum pumps into custom filtration or sample preparation systems

Problems It Solves

Contamination from oil-lubricated pumps affecting HPLC baselines or sample integrity
Overheating and shutdown during extended runs due to inadequate cooling systems
Noise interference in quiet lab environments from high-speed rotary pumps
Short diaphragm life due to material degradation in aggressive chemical environments
Inconsistent vacuum levels during long analytical runs, leading to data variability

Data

Specifications

Model	VP020, VP033A, VP050A, VP050B, VP100A
Speed of Evacuation	15 to 60 L/Min
Vacuum	200 to 250 mbar
Extreme Pressure	≥0.075 Mpa (VP020), ≥0.08 Mpa (VP033A, VP050A, VP100A), ≥0.095 Mpa (VP050B)
Positive Pressure	≥30 Psi (VP020, VP100A), NBR (VP033A, VP050A, VP050B)
Motor Power	75 W (VP020), 160 W (VP033A, VP050A, VP050B, VP100A)
Voltage Rating	220 Vac, 50 Hz
Inlet Size	φ6 mm
Outlet Size	φ6 mm (VP020, VP050A, VP050B, VP100A), silencer (VP033A)
Pump Head	1 (VP020, VP033A, VP050A), 2 (VP050B, VP100A)
Working Temperature	7-40 ℃
Pump Body Temperature	<55 ℃
Noise Level	<60 dB
Dimensions (L x W x H)	245 x 120 x 160 mm (VP020), 270 x 130 x 210 mm (VP033A), 230 x 180 x 265 mm (VP050A), 350 x 130 x 220 mm (VP050B), 310 x 200 x 210 mm (VP100A)
Weight	4 kg (VP020), 7 kg (VP033A, VP050A), 7.5 kg (VP050B), 10 kg (VP100A)
Function	Vacuum & Pressure (VP020, VP100A), Vacuum (VP033A, VP050A, VP050B)

Materials

Nitrile Rubber diaphragm
Metal components with imported axletrees for steady running and low noise
Plastic housing with air exchange bin containing filtering material for clean air output

Customization Options

OEM contract manufacturing available for private-label branding
Custom packaging options for distributors and lab suppliers
Adjustable pressure settings can be tailored for specific application needs
Integration support for OEMs embedding pumps into larger systems

How It Is Made

Manufacturing And Quality Control

Manufacturing Process

Diaphragm assembly using Nitrile Rubber with corrosion-resistant properties
Integration of imported axletrees for smooth and efficient rotation
Self-cooling air draft system design for continuous operation
Air exchange bin with filtering material to ensure clean exhaust air
Final assembly and testing under operating conditions to verify vacuum and noise levels

Quality Control

Diaphragm integrity tested under vacuum and pressure cycles
Noise level measured at full load to ensure <60 dB
Pump body temperature monitored during 24-hour run to confirm <55 ℃
Vacuum and positive pressure performance verified against specified values
Air exhaust filtered and tested for cleanliness before shipment

Comparison

Compared With The Alternatives

Versus Oil-lubricated rotary pumps

Oil-free diaphragm pumps eliminate contamination risk and require no oil changes, reducing maintenance and sample interference

Versus Standard diaphragm pumps with metal diaphragms

Nitrile Rubber diaphragms offer better chemical resistance and longer life in corrosive environments

Versus Pumps without self-cooling systems

The self-cooling air draft system allows 24-hour continuous operation without overheating

Versus Pumps with fixed pressure output

Adjustable pressure design supports both vacuum and controlled air flow for varied lab applications

Use Guide

How To Use It

Install the pump on a stable, level surface with adequate ventilation for cooling
Connect the inlet to the filtration setup using a compatible φ6 mm tubing
Ensure the outlet is vented to atmosphere or connected to a vacuum line as required
Set the pressure control to match the required vacuum level or air flow rate
Run the pump for 10 minutes before starting sample processing to stabilise performance
Monitor temperature and noise during operation; stop if temperature exceeds 55 ℃
Use the pump as a backing pump for turbo molecular pumps only when specified

Photos

Product Gallery

Also In This Category

Related Industries And Guides

Food and Beverage Testing Vacuum Filtration Setup Guide

FAQ

Questions Buyers Ask

Can this pump be used without oil?

Yes. The pump is designed for oil-free operation and does not require any working medium.

What is the maximum continuous operating time?

The self-cooling air draft system allows 24-hour continuous operation without overheating.

Which models support both vacuum and pressure functions?

VP020 and VP100A support both vacuum and pressure functions. The others are vacuum-only.

What diaphragm material is used, and is it resistant to chemicals?

The diaphragm is made of Nitrile Rubber, which resists corrosion and is suitable for many chemical environments.

Can I use this pump as a backing pump for a turbo molecular pump?

Yes. The pump is designed for use as a backing pump for turbo molecular pumps in laboratory applications.

What is the noise level during operation?

The noise level is below 60 dB, suitable for use in quiet laboratory environments.

Do you offer OEM or private-label options?

Yes. The Microlab OEM division supports private-label branding, custom packaging, and contract manufacturing.