Sealey AK4122 Disc Type Propylene Glycol Antifreeze Tester, 389mm x 118mm x 55mm

Sealey AK4122 Disc Type Propylene Glycol Antifreeze Tester

The Sealey AK4122 Disc Type Propylene Glycol Antifreeze Tester is a precision instrument designed for automotive and industrial cooling systems that use propylene glycol as the antifreeze agent. Its compact dimensions—389 mm × 118 mm × 55 mm—make it ideal for handheld operation, while its robust construction ensures reliable performance in demanding workshop environments.

Key Design Features

• Disc‑Type Indicator: The tester incorporates a clear, color‑coded disc that slides along a calibrated scale. As the disc moves, it visually indicates the antifreeze concentration and freezing point of the coolant sample.
• Wide Measurement Range: Capable of detecting propylene glycol concentrations from 0 % to 100 %, the AK4122 covers the full spectrum required for both fresh and recycled coolant systems.
• Temperature‑Resistant Materials: The body is fabricated from high‑grade ABS plastic, while internal components are made from stainless steel. This combination resists corrosion, temperature fluctuations, and chemical exposure typical of glycol solutions.
• Easy Sample Collection: A built‑in sample port allows users to draw coolant directly into the tester without external syringes or containers, reducing contamination risk.
• Durable Seal: The tester features a rubber gasket that maintains an airtight seal during use, preventing leaks and ensuring accurate readings.

How It Works

The AK4122 operates on the principle of refractive index measurement. When a coolant sample is introduced, the disc’s position shifts along a scale calibrated to reflect the solution’s refractive index, which correlates directly with propylene glycol concentration and freezing point. By simply observing the color band that aligns with the scale markings, technicians can instantly determine whether the coolant meets the required specifications.

Applications

• Automotive Cooling Systems: Ideal for cars, vans, trucks, and marine engines that rely on propylene glycol to prevent freezing in cold climates.
• Industrial Process Equipment: Suitable for heat exchangers, boilers, and refrigeration units where glycol is used as a coolant or heat transfer fluid.
• HVAC Systems: Useful for residential and commercial heating systems that employ glycol-based antifreeze to maintain optimal operating temperatures.

Benefits of Using the AK4122

• Rapid Diagnostics: Provides instant results, eliminating the need for laboratory analysis or time‑consuming test kits.
• Improved System Longevity: By ensuring correct glycol concentration, users can prevent corrosion, scale buildup, and freeze damage, extending equipment life.
• Cost Efficiency: Accurate measurements reduce waste of antifreeze and avoid costly repairs caused by improper coolant levels.
• User‑Friendly Interface: The clear color coding and intuitive design make it accessible to both seasoned technicians and DIY enthusiasts.

Maintenance & Care Instructions

1. After each use, rinse the sample port with distilled water to remove any residual glycol.
2. Inspect the disc for scratches or wear; replace if visibility is compromised.
3. Store the tester in a dry environment away from direct sunlight to preserve material integrity.

Safety Considerations

• Handle with care to avoid accidental ingestion of propylene glycol, which can be harmful if consumed in large quantities.
• Avoid contact with skin and eyes; wash thoroughly if exposure occurs.
• Keep out of reach of children and pets.

Conclusion

The Sealey AK4122 Disc Type Propylene Glycol Antifreeze Tester delivers precise, reliable, and rapid assessment of glycol‑based coolant systems. Its ergonomic design, durable construction, and straightforward operation make it an indispensable tool for maintaining optimal performance across automotive, industrial, and HVAC applications.