WPI will be exhibiting at ARVO 2026 in Denver (Booth #6002), showcasing TEER measurement systems, organ-on-chip technology, and microinjection tools for ophthalmology research.

With over 1,380 peer-reviewed citations, the UMP3 Microinjection Syringe Pump has become a trusted standard for precise, repeatable fluid delivery at the micro- and nanoliter scale. This article highlights how researchers across neuroscience, ophthalmology, pharmacology, and microfluidics rely on the UMP3 to ensure consistent dosing, reduce variability, and produce reproducible results in demanding experimental environments.

Neuroscience research demands exceptional precision when accessing and manipulating delicate neural structures. From cranial opening and microdissection to probing, retraction, and controlled microinjection, high-quality surgical instruments play a critical role in experimental accuracy and reproducibility. WPI offers a comprehensive range of precision tools, including microscissors, spatulas, forceps, hooks, and microsyringe systems, engineered to support reliable, repeatable workflows in university, research, and laboratory environments.

Unstable TEER readings can result from a range of technical and biological factors, from electrode condition and temperature changes to media variability and air bubbles. This article helps researchers identify the most common sources of measurement inconsistency and provides practical solutions to improve stability and reproducibility. It also clarifies how to distinguish true biological changes in barrier integrity from unwanted measurement noise, ensuring more confident interpretation of results.

This article explains how to convert raw resistance measurements into standardized TEER values (Ω·cm²) for accurate comparison of barrier integrity across experiments. It walks through the TEER formula, defines each component, and provides a clear step-by-step calculation with examples. By understanding how to properly subtract blank resistance and apply surface area normalization, researchers can generate more reliable, reproducible, and publication-ready data.

Microinjection accuracy becomes more difficult at sub-microliter volumes because small mechanical inconsistencies can change the delivered dose. Dead volume, trapped air bubbles, micro-leaks, plunger behavior, and manual technique differences all contribute to variability between injections and between users. A true gas-tight, zero-dead-volume syringe system helps maintain stable pressure and reduces sample loss, improving confidence that what you load is what you deliver. For repeatability-focused workflows, pairing the syringe with a microinjection pump can further standardize flow rate and volume, producing more consistent dosing outcomes across sessions and experiments.