Coolant Recycling System Performance

Typical Engine Coolant Desalting Performance

Parameter Pretreated Coolant Desalted Coolant
Total Acids, ppm* 1250 <100
Chloride, ppm 89 <10
Sodium Nitrate, ppm 1536 <30
Sodium Phosphate, ppm 2304 <200
Sulfate, ppm 327 <20
Sodium Tetraborate, ppm 639 <200
Sodium Silicate, ppm 140 <70
Aluminum, ppm ND ND
Copper, ppm ND ND
Iron, ppm ND ND
Lead, ppm ND ND
Zinc, ppm ND ND
Magnesium, ppm ND ND
Calcium, ppm ND ND
pH 8.5 6.5 - 7.0
* - Glycol degradation acids (glycolate/formate)
ND - Below detection limit

Overall CRS Process Removal Effectiveness

Compound Pretreated Used Coolant Product Overall Removal (%)
Total Glycol Degradation Acids, ppm 1250 1 100.0%
Chloride, ppm 89 1 99.0%
Sodium Nitrite, ppm 178 1 99.7%
Sodium Nitrate, ppm 1,536 1 100.0%
Sodium Phosphate, ppm 2,304 1 99.9%
Sulfate, ppm 327 1 99.7%
Sodium Molybdate, ppm 293 1 99.8%
Sodium Tetraborate, ppm 639 142 77.5%
Sodium Silicate, ppm 140 67 44.5%
Tolyltriazole, ppm 22 0 100.0%
Sebacic Acid, ppm 861 0 100.0%
2-Ethylhexanoic Acid, ppm 1,871 0 100.0%
Benzoic Acid, ppm 1,972 0 100.0%
%EG by Brix 37 35 - - -

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