Liquid coolant XSPC Pure Coolant 1 L — yellow UV-reactive

XSPC Pure Coolant 1 L — yellow UV-reactive is a ready-to-use liquid coolant formulated for custom PC water-cooling loops. Supplied in a one-litre package, the coolant provides bright yellow coloration and reacts under UV illumination to enhance visual effects in desktop liquid cooling systems. The solution is intended for circulation through radiators, reservoirs, pumps and tubing in consumer PC cooling setups and is presented as a pre-mixed, use-ready fluid to simplify system filling and maintenance.

Advantages

This coolant is supplied ready to use and does not require additional mixing, which reduces preparation time and the risk of incorrect dilution. The yellow UV-reactive formulation offers consistent colour and visible fluorescence under UV light without the need for additional dyes. The fluid is compatible with typical materials found in PC water-cooling loops and is designed for circulation in radiators, pumps, reservoirs and standard tubing, supporting both visual customization and functional heat transfer in desktop systems.

Suitable for

• Custom PC water-cooling loops in desktop computers
• Radiators, reservoirs and pump circulation systems
• Visible liquid cooling builds that use UV lighting for aesthetics
• Systems using standard soft or hard tubing compatible with premixed coolants

Key specifications

• Volume: 1 litre ready-to-use coolant
• Colour: yellow with UV-reactive fluorescence
• Intended use: closed-loop PC liquid cooling systems (radiators, reservoirs, pumps, tubing)
• Form: liquid, premixed for direct circulation

How to use

Before filling, flush the cooling loop and components with distilled water or an appropriate cleaner to remove residues from previous fluids. Shake the bottle gently if recommended by the manufacturer and pour the coolant into the reservoir or fill port according to the system manufacturer’s instructions. Run the pump at low speed while filling to remove air, monitor for leaks and continue until the loop is fully circulated and the fluid level stabilizes. After initial filling, allow the system to run for a short period, then top up as needed and re-check fittings for secure connections.

Usage recommendations

Use this product in closed-loop PC liquid cooling systems and avoid mixing with other coolants or additives to prevent chemical interactions or colour change. For best results, perform periodic maintenance such as visual inspection and loop flushing according to your cooling system’s maintenance schedule. Avoid contact with skin and clothing; in case of accidental contact, rinse with water. Store the coolant in a cool, dry place away from direct sunlight and UV sources when not in use to preserve stability.