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  • Fotospeed RA50 Rinse Aid 500ml

Fotospeed RA50 Rinse Aid 500ml

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RA50 is a highly concentrated film wetting agent which greatly reduces surface tension to promote streak-free drying of films, without damaging the emulsion. It should be added to the final rinse in the ratio of 1 part RA50 to 200 parts water (5mls per litre). It will keep for several years in a sealed bottle.