Aura PTx

Smart Protein Analysis & Formulation Instrument

Speed up protein formulation development and screening with Aura PTx. With just 5µL, discover a faster way to detect, count and characterize excipients and drug products at earlier stages of therapeutic development.


Protein Aggregate ID

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Polysorbate Degradation Monitoring


5 µL to 10 mL Volume


1 Minute Per Sample

Why Choose Aura PTx?

Protein stability and preventing aggregation is crucial when developing therapies. That’s why it’s time to leave flow cell imaging behind.

With Aura PTx, there’s a better way to perform particle analysis.

Now you can quickly identify and count aggregates that form due to degraded polysorbate in your formulation. And with two-channel fluorescence, determine if aggregation in your protein therapy is caused by proteins or polysorbates in your sample – at the same time.

ID protein aggregates. Accurately detect excipient degradation within your formulations and distinguish between protein and non-protein particles effortlessly.

Monitor polysorbate degradation. With fluorescence applications, you can track polysorbate degradation to confidently evaluate the stability of your product.

ID, Count and Size Degraded Polysorbate

Protein formulations frequently include excipients like polysorbate to aid in stability. But what happens when polysorbate degrades?

Aura PTx is the first to use Thioflavin T (ThT) and BODIPY FL C16 staining to detect and quantify protein aggregates and polysorbate breakdown. Analyze the stability of the sample in terms of both biology and polysorbate in a single experiment.

Make Smarter Decisions with FMM

Determining the best course of action based purely on morphological features is not the way to go if reliability, security, and efficacy are your top priorities.

With the help of FMM, Aura PTx tells you exactly what is protein (via ThT staining) and what is not, even in mixed particles.

High Throughput Screening For Your Protein Formulations

Unlike traditional high throughput methods, which predict protein stability based on protein melting point, Aura accurately measures the effect of formulations on the stability of proteins.

With Aura PTx, we offer an intuitive platform that can analyze dozens of solutions in just 60 seconds with minimal stress. Additionally, its 96-well automated format makes it highly suitable for use in design-of experiments (DoE) scenarios while needing only a small sample size, so you can rest assured that your drug product is safe and stable at every step.


Key Specifications

Imaging Area 24.6 mm2
Optics 4x objective
Minimum Volume 5 μL (assay dependent)
Resolution 1.0 pixel/μm
Detectable Size Range Range from >1 μm (ECD) to <5 mm (ECD)
BMI Read Time 1 minute/sample
FMM Read Time 30 seconds/sample
Software Particle VUE 4.x all-in-one software suite (image capture and analysis)

Useful Documents

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    Specification Sheet

Related Documents

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    Aura Family Brochure

  • Sprite

    Early Stage Developability Assessment App Note

  • Sprite

    Cell Line Development App Note

Ready to bring fast, decisive, low volume particle characterization to all of your protein formulation development and manufacturing workflows? Get in touch to request a quote.

Particle Vue Software

Get particle analysis answers in just a few clicks with flexible, easy-to-use Particle Vue Software.

Frequently Asked Questions

Biopharmaceutical formulation refers to the process of developing and optimizing the composition and characteristics of biopharmaceutical products, such as protein-based drugs, vaccines, and gene therapies. Formulation development aims to ensure the stability, efficacy, safety, and manufacturability of biopharmaceutical products by selecting appropriate excipients, buffers, pH, and dosage forms.

Biologics are challenging to manufacture due to their complexity and sensitivity to manufacturing processes. Unlike small molecule drugs, which are chemically synthesized, biologics are typically produced using living cells or organisms, such as bacteria, yeast, or mammalian cells. The production process involves multiple steps, including cell culture, purification, and formulation, each of which requires careful control to ensure product consistency, purity, and safety. Additionally, biologics are prone to degradation, aggregation, and immunogenicity, further complicating the manufacturing process.

Biologics are often expensive due to the complexities involved in their development, manufacturing, and regulatory approvals. The production of biologics requires sophisticated technologies, specialized facilities, and skilled personnel, which contribute to higher production costs compared to conventional drugs. Additionally, the lengthy and rigorous regulatory approval process, including clinical trials and post-market surveillance, further adds to the overall cost. Furthermore, limited competition from generic alternatives and the high demand for innovative biologic therapies contribute to their high prices.

Process characterization of proteins involves understanding and optimizing the various steps involved in protein production, purification, and formulation. It aims to identify critical process parameters (CPPs) and their impact on product quality attributes, ensuring robust and reproducible manufacturing processes. Process characterization involves conducting systematic studies, such as design of experiments (DoE), to evaluate process variability, identify potential failure modes, and establish process control strategies to meet product specifications.

Protein identification and characterization involve determining the identity, structure, composition, and properties of proteins. This process is crucial for various applications, including drug discovery, biomarker identification, and biopharmaceutical development. Techniques such as mass spectrometry, chromatography, electrophoresis, and spectroscopy are commonly used to identify proteins, determine their primary sequence, assess post-translational modifications, and characterize their physicochemical properties.

Aura systems identify and characterize proteins by fluorescently labeling the protein aggregates with a dye such as Thioflavin-T (ThT) or performing an immunoassay.