Polyetherimide (PEI; branded as Ultem[2]) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. When comparing PEI to PEEK, the former is cheaper but has lower impact strength and a tighter temperature range.

PEI is a cationic polymer; the negatively charged outer surfaces of cells are attracted to dishes coated in PEI, facilitating stronger attachments between the cells and the plate.

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PEI International Health knows no national borders. That is why experts work together internationally in the authorisation and monitoring of quality, efficacy and safety of medicinal products. The Paul-Ehrlich-Institut (PEI) is actively involved in many important institutions and committees in Europe and worldwide.

PEI offers the most complete range of dynamic protective covers available on the market: we are able to design, manufacture and market spare parts for any type of machine tool.

Thus, this review aims to consolidate the past applications of PEI in DNA delivery, elucidate the obstacles that hinder its transition to clinical use, and highlight potential prospects for novel iterations of PEI derivatives. The present review article is divided into three sections.

In this guide, we will highlight the key properties of PEI which make it an ideal choice in high-end engineering applications. Also, discover the sustainability initiatives that you can make to create greener PEI options that lead to improved fuel efficiency and reduced emissions.

Polyethylenimine (PEI) is a cationic polymer widely used in transfection, gene delivery, and biomaterials research. Performance depends on molecular weight, structure (linear vs. branched), and application requirements.

PEI-Genesis is more than a distributor — we’re a community of engineers dedicated to solving your most complex interconnect challenges. We act as your partner, advisor, and trusted resource, connecting with you on a deeper level than ordinary distributors ever could.

PEI is an Irish-owned family business operating in the medical arena since 1963. We build meaningful relationships with our customers and suppliers that stand the test of time and are the trusted partner in Ireland for some of the world’s largest healthcare companies.