Nu-Calgon 4320-W8 Acid Test Kit

Phase III® Acid Test Kit

4320-W8 is the direct replacement for 064427

Nu-Calgon 4320-W8 Acid Test Kit – Phase III Refrigeration Oil Testing Kit

The Nu-Calgon 4320-W8 Acid Test Kit is an essential tool for HVACR professionals, designed to accurately measure acid content in refrigeration oils. This Phase III test kit determines the acid number—expressed in milligrams of potassium hydroxide (KOH) per gram of oil—to evaluate the condition of the oil and detect contamination before costly equipment damage occurs.

Key Features:

• Professional-grade acid testing for refrigeration oils

• Compatible with mineral oil, alkylbenzene oil, and polyol ester (POE) oil

• Detects acid contamination before system failure

• Simple color-change indicator for quick results

• Phase III standard:

  • Maximum acceptable acid number for mineral and alkylbenzene oils: 0.05 mg KOH/g

  • Maximum acceptable acid number for POE oils: 0.16 mg KOH/g

• Color indicator changes from purple to pink or clear when contamination is present

How It Works:
The test measures the amount of KOH needed to neutralize the acid in the oil. Oils below the acceptable acid number remain stable and show no color change, while oils with higher acidity trigger a color change, indicating contamination and the need for corrective action.

Applications:
Ideal for preventive maintenance, troubleshooting, and ensuring refrigeration systems run efficiently and reliably, the Nu-Calgon 4320-W8 Acid Test Kit helps protect compressors and extend system life.