Description

A4 is the Formula 420 variant formulated for plastics and silicone. The standard formulas are built for glass and ceramic and are not intended for soft materials; A4 carries the same AbrasivAction technology in a chemistry that will not haze acrylic or degrade silicone.

Why it stands out

• Purpose-built for plastics and silicone, unlike A1 and A2
• AbrasivAction technology adapted to soft surfaces
• Same fast shake-and-rinse routine
• The right answer for silicone rigs, acrylic pieces and plastic parts

Specifications

• Product code: A4
• Technology: AbrasivAction
• Surfaces: Plastics and silicone only
• Method: Shake and rinse

What’s included

• 1 x bottle of Formula 420 A4 cleaner

Compatibility

Plastics and silicone. For glass, metal, Pyrex or ceramic use A1, A2 or A3.

Care

Rinse thoroughly — silicone holds residue in surface texture more than glass does.

Good to know

Matching the formula to the material matters here. Using a glass formula on silicone is what ruins silicone.