hi mahiruha,
i prefer glass bottles so no interaction between alcohol and plastic. not sure if it will happen but i prefer to be safe. just pour out a little around the record and scrub with velvet pad or whatever you decide to use. you'll get the hang of how much is enough after cleaning a few records.
i got isopropyl from a dealer who supplies to labs etc. chemists might not have it. chemical supply dealers would be a better bet.
regards
Scrub is a scary word to use with Vinyl.
Just wipe softly and gently lifting the velvet out towards the edge of the Vinyl surface and tangent to the grooves
Cheers
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