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Polarion PS5 Retarder Solvent 1 Gallon is a solvent blend formulated by ML Campbell as Polarion Slow Retarder to lengthen dry times, so coatings stay open longer when environmental conditions are working against you. This product is described as a urethane-grade solvent blend, which positions it for use in urethane-grade finishing systems where controlled drying supports a smoother film build in shop workflows. The retarder is specifically designed to help correct leveling issues by slowing evaporation, which gives the finish more time to flow out before it sets, supporting a more uniform appearance. The same extended open time also helps address bubbling and flow issues, because trapped air and surface movement have more time to resolve before the surface skins over. The description notes that Polarion Slow Retarder is the slowest urethane-grade solvent blend ML Campbell offers, which matters when work is taking place in extreme tropical or desert conditions where finishes can flash too quickly.
This Polarion PS5 slow retarder solvent is positioned within the Solvents, Stains & Finishes category under Reducers / Retarders, which frames its use as an additive for finishing systems rather than a standalone coating. Being a urethane-grade solvent blend means it is tailored to support urethane-grade products where flow, leveling, and control over dry time affect day-to-day finishing results. Because it is designed to lengthen dry times, it plays a role wherever film formation happens too quickly, such as hot spray booths or sun-exposed shop areas. The stated focus on correcting leveling, bubbling, and flow issues gives finishers a defined set of problems this product is built to address in normal finishing practice.
The description notes that Polarion Slow Retarder is designed for extreme tropical and desert conditions, so its value centers on environments where high temperatures or strong sun exposure drive rapid solvent flash. In such conditions, coatings can set on the surface too quickly, which can contribute to dry spray, poor edge flow, and the loss of a continuous wet film. By lengthening dry times as a slow urethane-grade solvent blend, this retarder supports a longer open time window, so the coating stays workable while it levels. High heat desert conditions and humid environments are specifically referenced as situations where the product reduces bubbling and blushing, which ties its performance to real climate-driven defects that appear on wood and wood-based substrates. In shops that experience seasonal heat spikes or work near open doors, this retarder provides a way to keep the film in a wet, flowing state longer even when external air conditions push drying faster than ideal.
As the slowest urethane-grade solvent blend offered by ML Campbell, Polarion PS5 targets situations where standard reducers and faster solvents do not provide enough time for a finish to level and flow. This very slow evaporation profile allows the film to continue moving slightly after application, which supports the correction of minor spray pattern variations and helps minimize visible lap areas on large panels. Because the product is described as enhancing product flow, its role in the system is to support a smoother laydown, which in turn affects the finished look of cabinets, furniture, or millwork produced in the shop. The stated reduction of bubbling ties to the way slower solvents let trapped air escape through the liquid film before a skin forms. Reducing blushing in humid conditions similarly relates to how controlled solvent release limits moisture disturbance within the coating, supporting more predictable clarity in the dried film. Together, these characteristics position the retarder as a tool for repeatable finishing when workshop or jobsite conditions are hot or humid.
Polarion PS5 Retarder Solvent is a Polarion Slow Retarder urethane-grade solvent blend from ML Campbell, used to lengthen dry times in finishing systems where controlled drying supports film formation.
Polarion Slow Retarder is described as designed to lengthen dry times, giving coatings more time to flow and level, which helps address leveling and flow issues during application.
The product is identified as the slowest urethane-grade solvent blend ML Campbell offers, so it provides extended open time when faster blends do not give enough working time.
The description notes use in extreme tropical and desert conditions, where high heat or similar environments push coatings to dry too quickly on the surface.
Polarion Slow Retarder is stated to reduce bubbling and blushing due to high heat desert and humid conditions by slowing solvent evaporation and extending wet time.
The web description lists enhances product flow as a benefit, meaning the coating can move and level across the surface more evenly during the extended drying period.
Choosing Polarion PS5 Retarder Solvent 1 Gallon gives access to a Polarion Slow Retarder that is the slowest urethane-grade solvent blend ML Campbell offers, which is specifically described as designed for extreme tropical and desert conditions where extended dry time is valuable. The stated ability to lengthen dry times, enhance product flow, and reduce bubbling and blushing in high heat desert and humid conditions directly supports finishing workflows that must deliver consistent film appearance despite challenging climates. For shops working within the Solvents, Stains & Finishes family and using Reducers / Retarders to tune performance, this gallon of Polarion Slow Retarder provides a clearly defined tool for controlling dry time and flow when ambient conditions drive fast solvent flash.
Sold In: 1 Gallon
