Click HERE for Comparison of Silanized v. RSA-Pro X Vials - %RSD

Click HERE for Frequently Asked Questions. FAQ.


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Our goal is to provide the best customer experience possible. If you cannot find what you are looking for, have any questions or would like to give us a suggestion please use any of the following ways to contact us directly. We would love to hear from you.

  • Call us: 8:30AM – 6:00PM EST 1-732-380-8900 and hit 0#

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We are always ready to lend any support we can. Our experienced scientists and professionals are ready to assist you with any technical support questions. Every question is considered a good question and we will work with you on a solution as fast as possible.

Hydrophobic RSA™ Glass with Extreme Hydrolytic Stability | Better than Silanized Vials!

Many factors affect adsorption of samples to borosilicate glass due to its many surface hydroxyl groups (silanols). In the presence of water silanols will bind (adsorb) basic compounds (bases) such as most pharmaceuticals, foods and many other common analytes.

Factors also affecting non-basic, compound adsorption is the glass structure itself including the siloxane bonds. Between the silanols and siloxanes are some naturally inherent metals (aluminum and boron) which create a very hydrophilic surface that will adsorb most proteins, peptides, enzymes, natural products and many other types of compounds.

The RSA-Pro X™ surface treatment is a breakthrough technology that starts with RSA™* glass. It  provides complete surface coverage that is hydrolytically stable for years; even in 100% water.  This hydrophobic surface will not adsorb most compounds and is often chosen for Storage, Stability Testing, Shipping, Standards, Dissolution and QC Testing and brings an improved chemical resistance.

*Reduced Surface Activity Vials (RSA™) have the most pristine, surface chemistry in the industry and are successfully used in laboratories for many years through-out the world to eliminate analyte loss. RSA-Pro X Inserts are only sold in the U-2D Micro-Sample Management System Kits or Racks.

Click HERE for more RSA-Pro X™ information.

Click HERE to Download the RSA-Pro X™ brochure.


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