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Supplier: Welch Vacuum
Description: For use with Welch® peristaltic pumps (see <B>84009-696</B> series).

Supplier: WELCH MATERIALS, INC.
Description: <p>The Welch ghost-buster column eliminates ghost peaks in chromatographic separation by removing low-polarity impurities from the mobile phase, mixer, and pipelines. Installed between the gradient mixer and injector, it adsorbs weak-polar and non-polar organic contaminants without altering the mobile phase composition. Unlike in-line filters, it targets organic pollutants rather than just solid particles. This improves separation clarity, prevents interference, and extends the lifespan of both the column and the system, making it ideal for long-term, high-precision operations.</p>

New Product

Catalog Number: (77574-112)
Supplier: Labconco
Description: Accessories for Welch® Vacuum Pump

New Product


Catalog Number: (470016-502)
Supplier: Avantor
Description: This kit introduces students to igneous rocks.


Supplier: Welch Vacuum
Description: Chemical-resistant HDPE for use with Welch® Peristaltic Pump Systems (see <B>84009-696</B> series)

Supplier: Welch Vacuum
Description: Welch Vacuum Pumps are perfect for vacuum or pressure applications.

Supplier: Welch Vacuum
Description: Premium and Gold pump oils are the only oils recommended for use with Welch direct-drive vacuum pumps

Product available on GSA Advantage®

Catalog Number: (470110-926)
Supplier: Welch Vacuum
Description: Welch DuoSeal is a single-stage pump with metal vanes and motor mounted on steel base with rubber feet.

Product available on GSA Advantage®


Supplier: Welch Vacuum
Description: Complete oil-free vacuum system for rotary evaporators, concentrators, and other laboratory vacuum applications generating harsh chemical fumes

Catalog Number: (80081-226)
Supplier: Welch Vacuum
Description: This fitting is made of stainless steel.


Supplier: Labconco
Description: Rotary vane vacuum pump.

New Product

Catalog Number: (470016-504)
Supplier: Avantor
Description: The Sedimentary Rock Collection introduces students to sedimentary rocks.


Supplier: Welch Vacuum
Description: This hose adapter kits ensure proper sized tubing adapters and clamps for vacuum tight connections.

Catalog Number: (89410-232)
Supplier: Welch Vacuum
Description: Use affordable Welch-Ilmvac dry diaphragm pumps to provide oil-free vacuum for a wide variety of applications

Product available on GSA Advantage®


Supplier: Welch Vacuum

Supplier: Welch Vacuum
Description: Female pipe adapters are made of stainless steel

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us at 1-800-932-5000.
You must log in to order restricted items. We request that you provide the required business documentation to purchase this product for the first time.

To order chemicals, medical devices, or other restricted products please provide identification that includes your business name and shipping address via email CMD_NA@vwr.com or fax 484.881.5997 referencing your VWR account number . Acceptable forms of identification are:

  • issued document with your organization's Federal Tax ID Number
  • Government issued document with your organization's Resale Tax ID Number
  • Any other Government ID that includes the business name and address


VWR will not lift restrictions for residential shipping addresses.

-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organization. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
This product is currently unavailable but limited stock may be available in our extended warehouse network. Please call 1-800-932-5000 and a VWR Customer Service Representative will help you.
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