Home > Vacuum Pump Type > Scroll Pumps >

Edwards nXDS20i Dry Scroll Pump
Edwards nXDS20i Dry Scroll Pump


Manufacturer's List Price: $13,181.00
Our Price: $9,950.31
Money Saved: $3,230.69

Condition: Brand New
Warranty: 1 Year Manufacturer's Warranty
Typically Ships Within: 7 to 10 Business Days

Request a Formal Quote

Quantity in Stock:1

Product Code: ED-A73801983

Technical Specification Sheet (NEW)

Edwards nXDS20i Dry Scroll Pump

  • Bearing shield ensures separation between process gases and bearing lubrication to ensure clean vacuum and no possibility of contamination.
  • Smart motor drive means consistent performance globally, pump overload protection and remote start/stop capability.
  • High flow gas ballast feature allows pumping of vapours including water vapour at up to 240 gh-1
  • Simple single sided scroll design allows maintenance to be done in minutes for low cost of ownership and maximum up-time.
  • Enhanced versions offer up to 20% lower peak power requirements during initial pump down.
The nXDS allows a wide range of control and communication options
The nXDS comes as standard with a manual, easy to use, gas ballast port
A perfect companion for your turbomolecular pump
With exceptional pumping capability, ultimate vacuum performance and state-of-the-art design features Edwards nXDS is the best performing pump in its class. nXDS improves on legacy XDS pumps by offering increased pumping speeds, combined with lower ultimate pressures, lower power consumption and lower noise - up to 20 times quieter than other pumps. Gas ballast allows for pumping of condensable vapours including, water, solvents, dilute acids and bases. nXDS pumps also feature the latest in tip seal technology giving significantly longer life between tip seal changes. Integrated inverter drive with auto sensing voltage input delivers optimised pumping performance globally.
Click Here to View Product Video

The Edwards nXDS20i Dry Scroll Pump includes:
  • 1 Year Manufacturer's Warranty
  • Power Cord
  • Manufacturer's Documentation
  • Operator's Manual

Edwards nXDS20i Dry Scroll Pump Technical Specifications

Nominal rotational speed

1800 rpm


28.0 m3h-1 / 16.5 ft3min-1

Peak pumping speed

22.0 m3h-1 / 13.0 ft3min-1

Ultimate vacuum (total pressure)

0.030 mbar / 0.022 Torr

Minimum standby rotational speed

1200 rpm

Speed control resolution (percentage of full rotation speed)


Pumping speed at minimum rotational speed


Maximum continuous inlet pressure

50 mbar

Motor power 1-ph

260 W

Power connector 1-ph

IEC EN60320 C13

Recommended fuse

10A, 250Vac rms


25.6 kg / 56 lb

Inlet flange


Exhaust flange


Noise level

52 dB(A)

Vibration at inlet flange

< 4.5 mms-1 (rms)

Leak tightness (static)

< 1x10-6 mbar ls-1

Operating temperature range

10 to 40 °C / 41 to 104 °F

Electrical Supply


Comparison of Scroll Pumps

Model nXDS6i nXDS10i nXDS15i nXDS20i XDS35i XDS46i
Displacement 6.2 m3h-1 / 3.6 ft3min-1 12.7 m3h-1 / 7.5 ft3min-1 17.1 m3h-1 / 10.1 ft3min-1 28.0 m3h-1 / 16.5 ft3min-1 43 m3h-1 / 25 ft3min-1 60 m3h-1 / 35 ft3min-1
Ultimate Vacuum 0.020 mbar / 0.015 Torr 0.007 mbar / 0.005 Torr 0.007 mbar / 0.005 Torr 0.030 mbar / 0.022 Torr 0.010 mbar / 0.008Torr 0.05 mbar / 0.04 Torr
Weight 26.2 kg / 58 lb 25.8 kg / 57 lb 25.2 kg / 56 lb 25.6 kg / 56 lb 48 kg / 105 lb 48 kg / 105 lb
Noise Level 52 dB(A) 52 dB(A) 52 dB(A) 52 dB(A) 57 dB(A) 55.4 dB(A)
Inlet Flange NW25 NW25 NW25 NW25 NW40 NW40

Why Buy From Marshall Scientific?

Marshall Scientific's primary goal is to enhance your laboratory research at a more affordable price. Our industry-trained customer service team is always here to assist you along every step of your purchase, from initial product questions to technical support, and everything in-between. With our connection to some of the industry's largest manufacturers, we can ensure you receive the lowest price without sacrificing quality whatsoever.

Brand-New Products for Far Less than Retail

Most Pieces Ship within 2 to 5 Business Days

All Products are Fully Warrantied

Trained Customer and Technical Support

Industry Leading Overall Customer Satisfaction

Bausch + Lomb
Working with Marshall Scientific was overall an enjoyable experience. Their customer service really helped me choose the product that fit my needs, and checking out was easier than I expected. Shipping was faster than expected which was also a plus!
James M. / Bausch + Lomb
I have purchased a few items from Marshall Scientific over the years and I have always had great experiences with both the products and the customer support. Chat feature definitely makes both communicating and navigating easier. I would recommend this company to a colleague.
Lila B. / Caltech
I just received the two Polyscience chillers I ordered through your ecommerce store and I couldn't be happier with my purchase. Customer service was instrumental in helping me choose the correct model. Thanks again!
Nora F. / Sanofi
Working with Marshall Scientific has been an exceptional experience. Their team assisted me in selecting the perfect recirculating chiller for my research needs. Their expertise and guidance were invaluable, and I am grateful for their support. Marshall Scientific has been vital to the success of my research endeavors.
Zara K. / Ford
Collaborating with Marshall Scientific has been a truly exceptional experience. Their fast lead time for centrifuges is unparalleled, and their commitment to quality is evident in every aspect of their service. I would highly recommend them to anyone in need of a reliable and efficient scientific equipment supplier.
Mei L. / AWS
I recently ordered pipettes from Marshall Scientific and was impressed with their great selection and quality. The pipettes were exactly what I needed and worked perfectly. I would definitely order from them again.
Aarav S. / Pfizer
Mayo Clinic
The chat support I received while selecting a thermal cycler was exceptional. The representative was knowledgeable, patient, and helped me choose the perfect product for my needs. I am grateful for their assistance.
Anneliese M. / Mayo Clinic
University of Pennsylvania
I recently purchased a ChemiDoc imaging system from Marshall Scientific and was impressed with the great condition it arrived in. The shipping was professional and the system has been a valuable addition to my scientific research.
Tyler S. / University of Pennsylvania
Massachusetts Institute of Technology
The New Brunswick Incubator Shaker that I ordered from Marshall Scientific has just arrived and I cannot say enough how satisfied I am with my purchase. The shaker works like it came straight from the factory and the longer warranty is definitely a plus. I highly recommend Marshall to anyone looking for a company that stands behind their products.
Xiao L. / MIT
Mass General Hospital
My recently purchased microplate reader from Marshall Scientific has been a much needed addition to my lab. The reader is easy to use and provides accurate and reliable results. I have used it for various experiments including ELISA, cell viability assays, and protein quantification. The reader has greatly improved the efficiency and accuracy of my experiments. Thanks again!
Larisa R. / MGH
I purchased a recirculating chiller from Marshall Scientific three months ago and couldn't be happier. The Thermoflex 2500 is a great unit and has been working perfectly. I actually bought three of them and they have exceeded my expectations.
Gavril K. / Tesla
Columbia University
I recently purchased a laboratory freezer from Marshall Scientific and I am very pleased with my purchase. The freezer is of high quality and has been perfect for storing my research samples. I use it mostly for cell culture and protein storage and it seems to do the job just fine. The overall cosmetic condition of the unit is perfect.
Juan M. / Columbia University
I would like to extend a thanks to Kyle on the other side of Marshall Scientific's chat feature to help me select the right product for my laboratory needs. Kyle was knowledgeable and helped me choose the perfect equipment for my application. The chat feature was convenient and saved me time. I would definitely use it again in the future.
Yumi S. / Rivian
Quest Diagnostics
I recently received a Vicell cell counter from Marshall Scientific and I must say, I was anxious about making such a large purchase over the internet. However, the product arrived in perfect condition and has exceeded my expectations. I use it for various applications in my lab and it has been incredibly accurate and efficient. The professional shipping was also a plus. I will definitely be purchasing from Marshall Scientific again in the future.
Ethan S. / Quest Diagnostics
Click Here to View Our Other Testimonials →

Share your knowledge of this product. Be the first to write a review »

Browse for more products in the same category as this item:

Vacuum Pump Type > Scroll Pumps
Ultimate Vacuum > 0.003 to 0.01 mbar
Vacuum Pump Type
Ultimate Vacuum
Brands > Edwards
Vacuum Pumps