Thermaltake

Thermaltake T1000 Purple Transparent Water Cooling Solution

4.6 (506 reviews)

Low-viscosity purple coolant that keeps custom loop temperatures down while delivering vivid, stable color saturation.

$19.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Thermaltake T1000 Purple (CL-W245-OS00PL-A) is a 1000 ml pre-mixed water cooling solution engineered for custom PC liquid cooling loops. The headline specification is viscosity: at 20°C, T1000 flows 26.4% more freely than comparable coolants, and at 40°C that advantage holds at 25.8%. In practical terms, this means less resistance through radiators, water blocks, and tubing — your pump works less to move coolant through the system, which can translate to slightly lower coolant temperatures and reduced pump noise. The anti-corrosive formula is rated for mixed-metal loops, protecting copper, nickel, brass, and aluminum components from galvanic corrosion without requiring separate additives.

This coolant is built for enthusiasts who treat their loop as both a thermal solution and a visual element of the build. The transparent purple maintains color saturation over its service life, and it can be blended with Thermaltake's TT Premium Concentrate Dyes for custom shades — useful for themed builds where hitting a precise color is part of the project. The trade-off of transparency is accountability: any prep shortcomings — flux residue, solder particles, biological growth — will be visible. That makes the T1000 a better fit for builders who are disciplined about flushing new radiators and maintaining their loops on a 12-month cycle. For those users, it's a technically sound coolant with genuine aesthetic appeal.

Key Features

Clearly Colorful - comes in 7 transparent colors red blue purple orange acid Green green and yellow Our formula ensures color saturation stability and duration

Make it unique - Pair with TT Premium Concentrate Dyes (P/N cl-w221-os00sw-a) to create custom colors for any build theme

Better formula for better system - The new formula minimizes the possibility for precipitation to ensure clear Coolant flow for your system

Flow like pure water - t1000’s low viscosity enables its effective flow At 20°C T1000 water cooling solution has 26 4% lower viscosity than other water cooling solution and 25 8% lower at 40°C

Anti-corrosive solution - T1000 is non-flammable and provides great protection for the entire cooling system from corrosion

2 year

Specifications

Brand
Thermaltake
Part Number
CL-W245-OS00PL-A
Capacity
1000 ml
Color
Purple (Transparent)
Type
Pre-Mixed Coolant
Anti-Corrosive
Yes
Flammability
Non-Flammable
Viscosity (20°C)
26.4% lower than comparable coolants
Viscosity (40°C)
25.8% lower than comparable coolants
Hazardous Component
2-Propanediol 6% (CAS: 57-55-6)

Pros & Cons

👍 Pros

  • 26.4% lower viscosity than competing coolants at 20°C reduces pump load and improves flow rate through complex loops.
  • Anti-corrosive formula protects mixed-metal loops including copper, nickel, and brass without requiring separate inhibitors.
  • Transparent purple color maintains saturation stability over months, avoiding the clouding or fading common in cheaper dyed coolants.
  • 1000 ml volume is sufficient for most single-loop custom builds without needing a second bottle.
  • Compatible with TT Premium Concentrate Dyes for precise custom color mixing.

👎 Cons

  • Transparent coloring will not mask particulate buildup the way opaque coolants do, requiring more vigilant loop maintenance.
  • Contains propylene glycol at 6%, which may leave residue in fittings if not flushed thoroughly during coolant changes.
  • No included biocide additive — builds in warm environments or with long idle periods may need supplemental protection.
  • Limited to a 12-month recommended service life, shorter than some competing long-life coolant formulas.

Frequently Asked Questions

Yes. The T1000's anti-corrosive formula is designed for mixed-metal and mixed-material loops, including copper radiators, nickel-plated blocks, and acrylic reservoirs. It inhibits galvanic corrosion between dissimilar metals, though you should still flush and replace the coolant per Thermaltake's recommended maintenance interval.
At 20°C, T1000 has approximately 26.4% lower viscosity than competing pre-mixed coolants, approaching the flow characteristics of distilled water. This translates to reduced strain on your D5 or DDC pump and more efficient coolant circulation, especially in loops with multiple radiators and tight-bend tubing runs.
Yes, T1000 is designed to be paired with TT Premium Concentrate Dyes (P/N CL-W221-OS00SW-A) for custom color mixing. The transparent purple base blends predictably with other dye concentrates, letting you dial in a unique shade for your build.
Thermaltake recommends replacing the coolant every 12 months under normal use. If you notice any discoloration, particulate buildup, or reduced flow rates, flush and refill sooner. Regular maintenance prevents precipitation and keeps thermal performance consistent.
The formula includes anti-corrosive and anti-bacterial agents to inhibit biological growth inside your loop. However, for builds that sit idle for extended periods, adding a dedicated biocide additive as a supplement is a reasonable precaution.