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The Test: ASHRAE 97 Sealed Tube Test
| Standard |
ASHRAE 97 (American Society of Heating Refrigeration and Air Conditioning Engineers) |
| Title |
Sealed Glass Tube Method to Test the Chemical Stability of Materials for
Use within Refrigerant Systems |
| Purpose |
The primary industry test that establishes how the thermal and chemical properties
of metals and refrigerant are impacted over time when exposed to the lubricant. |
| Description |
The lubricant is sealed in a tube along with the refrigerant, various metal
specimens, and elevated moisture levels. The tube is then taken to 347 oF and a high pressure
for 14 days. Stability is measured by the degree of refrigerant decomposition, metal
deterioration, acid formation and visual appearance of the oil. The test and results are
extensive. ICE 22 was tested with R-22, the standard refrigerant in most home and business air
conditioners, and against an industry standard oil - POE. |
| Results |
The full results are too extensive to list, but ICE 22 exceeded the standard in all
scenarios. Results show significant improvement in chemical stability and metals protection. Some of
the key results are:
- R-22 decomposition was reduced by 60% versus oil alone
- Corrosion of copper was reduced from 384 ppm to 56 ppm (86%)
- Corrosion of steel was reduced from 21 ppm to 0.05ppm (99%)
- No increase in the total acid number (TAN)
- Retained clarity and cleanliness in appearance
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What does this mean to me?
- ICE 22 will not impact the refrigerant over time
- ICE 22 will not impact the metal components of your air conditioner over time
- This is one of the reasons why one application last the lifetime of the air conditioner
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