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TECHNICAL DATA SHEET R562 Solder Paste Water Soluble Product Description Kester R562 Solder Paste is an organic acid, water soluble solder paste specifically designed for resistance to environmental extremes. Water soluble pastes tend to dry out in low relative humidity and slump at high relative humidity. R562 will maintain its print characteristics, tack and activity even after exposure to environmental extremes. Performance Characteristics:  Reduces BGA voiding to