Mayhems X1 - UV Yellow / Green Concentrate 250ml

X1 - UV Yellow / Green Concentrate 250ml

  • A smaller concentrated version of Mayhems which allows you to make larger quantities of coolant and saves on shipping fees!
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Stock Code: WC-045-MH

EAN: 0609224351563

MPN: 609224351563

Manufacturer: Mayhems

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Product information:

X1 - UV Yellow / Green Concentrate 250ml

X1 - UV Yellow / Green 250ml
Makes 2 Ltrs when mixed with DI or Ultra Pure water (125 ml per 1 Ltr)

Mayhems X1 is rather like the aircraft that first broke the sound barrier, Id-Est. it is the first of its kind! This coolant breaks a new mould, like the aforementioned plane of which broke the speed of sound. It is innovative and the leader of its product range.

The X1 is based on a proprietary blend of refined vegetable extracts that are fully biodegradable and have a very low order of oral toxicity. Mayhems X1 is recommended for use in systems where an ‘environmentally friendly’ product is preferred. It also contains non-toxic (GRAS) multi metal inhibitors formulated to protect water cooling equipment and associated systems against corrosion, scale and biological fouling, thus prolonging equipment life and thermal efficiency.

Mayhems X1 is not classed as harmful to aquatic organisms, is readily biodegradable and will not remain in the environment or pollute aquifers.

Properties & Benefits
- Can be used with all of Mayhems Dyes to make your own colours
- Blended with non-toxic corrosion & scale inhibitors for protection of Copper, Brass, Steel, Nickel and Aluminium. Proven to ASTM D3306 and BS6580 standards
- Very low oral toxicity, less than propylene glycol
- -15c freezing point (dependant on mix ratio?)
- Generally Recognised as Safe (GRAS) by the US Food & Drug Administration as a food additive
- Mobilizes to prevent scale or sludge filming
- Boiling Point : up to 100° C (pressure dependent)
- 85% Bio-degradable Within 30 Days
- Bitter taste additives to prevent consumption
- Can be stored for up to 3 years (in a cool dry environment)
- Made in the UK


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Superb reactivity to UV lighting, but a shame about biological growth resistance

I have been using Mayhems Coolants in 4 of my 5 water-cooled PCs for about 2 years and have tried most of their ‘colours’.

Their resistance to biological growth seems poor and I have had algae/bacterial growth on the tubing inner walls and reservoirs after just 4 months. I have tried mixing the concentrate at full strength, one & half strength and double strength and have also tried Tygon clear and Tygon Bio clear (13/19mm) tubing, but this has not improved biological growth resistance.

I now drain and re-fill those PCs containing this coolant every 6-8 months (noting that I do not use silver ‘kill coils’). This is not an especially onerous task if you build you PC with a low drain port and at least two quick disconnect fittings (at tubing manifolds or branches between your CPU and GCs) to act as anti-vacuum locks/bleed ports.

The reactivity of this particular coolant to intense UV light (both cold cathode and LED strips) is superb and any leaks can easily been seen against any coloured case panel or water-block.

In sum, good but not yet perfect!

M D Sykes 2016-01-27

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