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Blue-tinted leak detector spray in a one-quart bottle

Nu-Calgon

Nu-Calgon 4182-24 Cal-Blue Micro Leak Detector, 1 qt Spray Bottle

SKU CH-29VB-HCXW1

Pressurised blue-tinted spray detects refrigerant and gas leaks in HVAC and industrial systems

  • Product typeAir Conditioner Accessories
  • Product colorWhite
  • Pressurised spray simplifies leak checks in refrigerant systems
  • Non-flammable propellant keeps technicians safer during use
  • Blue-tinted bubbles reveal micro leaks the eye would miss
  • Liquid component pH 8.8 and viscosity 325 425 cPs suit HVAC maintenance
  • Store below 120 °F (49 °C) to preserve detection performance

HVAC Leak Detection Spray

The Nu-Calgon 4182-24 Cal-Blue Micro Leak Detector is a pressurized spray bottle designed for HVAC technicians and maintenance professionals. It identifies refrigerant and gas system leaks by producing visible bubbles at the leak point. The one-quart container provides sufficient volume for multiple service calls and routine system checks.

Pressurised Application Limits

The detector uses a non-flammable propellant to deliver a consistent spray pattern without external power. Its liquid component carries a pH of 8.8 and a viscosity between 325 and 425 cPs, ensuring the solution clings to vertical piping and fittings. Storage above 120°F (49°C) or in direct sunlight will compromise canister integrity and detection performance.

Pre-Installation Checks

Verify that the system pressure is within the detector’s effective range before application. Confirm the work area is ventilated and that eye protection is available, as the supplier recommends shielding eyes during use. Ensure the canister has been stored in a cool, dry environment and has not exceeded the 120°F temperature limit prior to deployment.

How it compares

Measured against everything we stock in Air Purification & Protection, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 93% of the 59 comparable items (median $29.99).

Specifications

Product
Brand nameNU-CALGON
Product typeAir Conditioner Accessories
Product colorWhite

Questions about this item

One-quart bottle or the 24-pack — which size fits a typical service van?

The 1 qt spray bottle is the standard field size; the 24 in the model number simply counts the bottles in a full case for shop stock.

What does the 8.8 pH reading mean when the foam hits a joint?

At pH 8.8 the liquid is mildly alkaline, so it will not corrode copper, steel or aluminium while still forming a stable bubble film that shows even micro leaks.

How does the pressurised can perform when the shop hits 120 °F?

The can is rated for storage up to 120 °F (49 °C); above that pressure rises sharply, so keep it out of direct sun and hot vehicle cabs.

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