Building Trust in Liquid Cooling: Inside Iceotope’s Approved Fluid Vendor Program

Key Takeaways

• Iceotope’s Approved Fluid Vendor Program ensures coolants are proven under real-world conditions, not just theoretical compatibility metrics
• A three-stage process moves from materials screening to six-month live system stress testing while Iceotope validates full system compatibility (fluid + server + components)
• A coolant-agnostic approach gives customers flexibility across regions, sustainability goals, and technical needs.
• Ongoing testing and vendor collaboration ensure long-term reliability and lifecycle performance.
  

The increasing density and heat generated by high-performance computing and AI infrastructure has made liquid cooling a necessity. This year, almost 40% of data centers are expected to deploy liquid cooling solutions. Today’s liquid cooling system designs are primarily focused on thermal efficiency: moving heat away from critical components so they can operate reliably and at maximum performance. However, the coolant itself is just as important.

Dielectric fluids are chemically engineered to be electrically non-conductive, high-performance coolants. In liquid cooling systems, dielectric fluids can improve thermal performance and enable higher-density compute, with little or no need for water. These fluids can also create a protective environment that improves computational performance, resilience, and even extend hardware lifecycles.

“Not all fluids are created equally. In high-density environments, incompatibility can lead to performance degradation, material failure, or long-term reliability risks,” explains Angus Hugues, PhD, Head of Manufacturing & Quality Assurance at Iceotope. “Comprehensive testing and validation of fluids is essential. Our focus is making sure every approved coolant performs not just in theory, but in a real server environment over time.”

Iceotope has developed a rigorous Approved Fluid Vendor Program to ensure that every coolant used in its systems is proven to be compatible and reliable under real-world conditions.

Built on Collaboration and Expertise

Iceotope’s Approved Fluid Vendor Program is not a one-sided certification process. It is a hands-on collaboration between fluid vendors and Iceotope’s materials science and liquid cooling experts, developed over several years and refined through extensive testing and field experience.

The goal is simple: provide customers flexibility in fluid choice without compromising performance, safety, or longevity.

This is especially important in a global market where requirements vary widely. Customers may prioritize:

• Regional availability and supply chains
• Sustainability characteristics (e.g., plant-based or re-refinable fluids)
• Specific technical properties like flammability or viscosity
• Trusted global brands or specialized providers
• Regional regulatory requirements
  

Rather than limiting choice, Iceotope takes a coolant-agnostic approach by enabling a broad ecosystem of approved vendors while maintaining strict performance standards.

Real-World Validation

Stage 1: Screening and materials compatibility

The process begins with a detailed review of the fluid’s safety profile and thermophysical properties. Vendors are then provided with a curated materials testing kit containing components commonly used in IT hardware and liquid cooling systems.

With formal guidance from Iceotope, vendors conduct compatibility testing to assess how their fluid interacts with these materials under controlled conditions.

This stage is both technical and collaborative. Beyond testing, Iceotope works closely with vendors, sharing insights on industry trends, design challenges, and opportunities for optimization.

Stage 2: Six-month stress testing in live systems

Once a fluid passes initial screening, it enters the most demanding phase: real-world validation inside an operational Iceotope system.

Unlike many approaches that test fluids only in isolation, Iceotope evaluates performance within a full server environment, including OEM hardware and system components. Over a six-month period, the system is continuously monitored, with:

• Extensive telemetry from servers, pumps, and sensors
• Regular fluid sampling and condition checks
• Clearly defined pass/fail criteria
  

This phase replicates real operating conditions while pushing them further, ensuring the coolant performs as expected over time.

A unique advantage of Iceotope’s architecture is the ability to test multiple fluids simultaneously, enabling direct comparison and accelerating innovation.

Stage 3: Validation, approval, and long-term support

At the conclusion of testing, Iceotope conducts a comprehensive evaluation comprised of:

• Full system disassembly
• Detailed inspection of all components
• Analysis of fluid condition and performance data
  

Only fluids that meet strict criteria are added to the Approved Fluid Vendor List. Beyond approval, Iceotope maintains ongoing collaboration with vendors, including extended lifecycle testing and support for recycling and end-of-life strategies, to ensure long-term reliability for customers.

Raising the Bar

What sets Iceotope apart is not just the structure of the program, but its depth. Many approaches focus on whether a fluid works within a tank. Iceotope goes further, validating the interaction between fluid, hardware, and system design.

The program also aligns with emerging industry frameworks and supports a transition toward more sustainable fluid options, without compromising performance.

As the data center industry evolves, so too do the demands placed on cooling infrastructure. By combining rigorous validation with a flexible, vendor-agnostic approach, Iceotope enables customers to choose the right fluid for their needs, confident that it has been tested where it matters most.