Inkjet Microarray Applications

Reverse Phase Protein Array (RPPA)

Screen cell and liquid biopsies


Supporting your biomarker discovery

In a reverse phase protein array, or RPPA, thousands of lysed samples are immobilised onto nitrocellulose, allowing high-throughput screening for biomarker discovery and quantification.  

Arrayjet instruments and services provide high-quality microarrays of cell and tissue lysates, serum, CSF, and other liquid biopsies. Samples can be crude extracts for maximum throughput or pre-fractionated for greater resolution. 

Ideal for: 

  • Researchers exploring liquid biopsies for biomarker analysis
  • Current RPPA users – ‘plug-and-play’ from your existing platform
  • Biomarker researchers who need a high-throughput alternative to Western blots and mass spectrometry
Increase your Research throughput

The Inkjet Advantage

Our unique microarray platform delivers consistent, reproducible, high-density microarrays at the fastest printing speed on the market. 

Get started easily

Adopt expert-optimised protocols. Print directly in adapted lysis buffers (e.g. RIPA) onto nitrocellulose.

Conserve precious sample

1 µl prints 100 16-pad array slides. Controlled, refrigerated conditions maintain sample integrity.

Never miss a spot

Guarantee 100% deposition yield with real-time quality control and automated spot reprint.

Maintain data traceability

Record all instrument parameters for consistency, metadata, and troubleshooting.

Instruments and services are delivered from our ISO 13485:2016 controlled manufacturing facility.

Arrayjet's Mercury Microarray Inkjet Printer


Mercury for Biomarker Discovery (RPPA)

A robust and simple platform to produce microarrays of patient samples for biomarker discovery. Combines the world-class printing of a Mercury instrument with an autoloading microarray scanner, proprietary reagents, and expert optimised protocols.


ArrayPlex™ Spot-On-Spot Microarrays

Arrayjet’s unique inkjet approach to bioprinting allowed us to develop ArrayPlex™ – our patented microarray platform. With ArrayPlex™ we can create multi-layered microarrays, allowing two libraries to be screened against each other. This takes throughput to the next level, generating millions of data points each week.

ArrayPlex™ is compatible with all sample types and detects hits at an equal or higher sensitivity to ELISA.

“We spot protein extracts onto nitrocellulose pads on slides for Reverse Phase Protein Array (RPPA) analyses. The protein microarrays are used for quantifying numerous specific proteins of interest in metabolism and immunity, using our library of >300 validated fluorescently labeled antibodies, for our own research and for numerous collaborators. This has been instrumental in publishing and for preparing competitive grant proposals. Printing perfect microarrays requires control of many variables and the Arrayjet customer service is a strong partner – always available to troubleshoot via email and coach during visits. The instrument continues to produce usable arrays even when the operator fails to get everything right. ”

Andrew Lane, Professor of Oncology, Center for Environmental and Systems Biochemistry, University of Kentucky

Let's work together


Our scientists will work to understand your needs and deliver a microarray solution for you. If you have an idea for a project – we’re excited to hear it.