| abstract |
PROBLEM TO BE SOLVED: To provide a rinsing composition capable of removing fine projections generated at the time of preparing a substrate of a memory hard disk and obtaining an excellent substrate surface free from surface defects other than the fine projections. Offering things. SOLUTION: The composition for rinsing a memory hard disk, comprising an oxo acid salt and / or chloride, and water, and the rinsing of a memory hard disk, comprising oxo acid and water. Composition. |