Liquid Instruments lands new backing from Keysight in $50M Series C

Liquid Instruments, a provider of software-defined test solutions, has announced a $50 million Series C round. The company says it is now backed by Keysight, adding a major name in electronic test and measurement to the story, though the provided source does not name a formal lead investor for the round.

Liquid Instruments builds the Moku line of hardware and software products, an FPGA-powered platform designed to run multiple instruments in one system. On its website, the company contrasts that approach with traditional test benches that rely on separate boxes for each measurement. Its product lineup spans hardware platforms including Moku:Delta, Moku:Pro, Moku:Lab, and Moku:Go, alongside software, APIs, and instrument functions such as oscilloscopes, spectrum analyzers, waveform generators, lock-in amplifiers, logic analyzers, and data loggers.

That positioning is the clearest market context in the source: Liquid Instruments is selling a software-defined alternative to conventional lab and test setups. The company frames its products as a way to build and customize measurement systems through a combination of software and hardware-accelerated real-time signal processing. It also highlights broader reach across optics and photonics, aerospace and defense, semiconductor test, automated testing, AI and machine learning, and education and research.

The source does not specify how the new funding will be used. It also does not provide valuation, headcount, or additional financing terms. What it does show is a company emphasizing product breadth and credibility with customers and institutions. Liquid Instruments lists organizations including NASA, Stanford, NIST, Keysight, Applied Materials, Caltech, CERN, Lockheed Martin, and Texas Instruments among those shown on its site.

For Liquid Instruments, the Series C arrives with a simple message: the company is betting that test and measurement users want fewer dedicated boxes and more flexible instrumentation built around software. Keysight’s backing adds weight to that pitch, especially for a business trying to redefine how lab and engineering teams configure measurement systems.