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Liquid Working Medium Inspection Criteria
Liquid Working Medium Inspection Criteria
Table A-1 Liquid working medium inspection criteria
No.
Test Item
Test Indicator
Test Method or Instrument
1
pH value
≥ 6.5
pH meter
2
Ethylene glycol concentration
25±5% (volume concentration)
Ethylene glycol concentration tester (freeze point tester or refractometer)