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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