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Tech Notes |
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DOWNLOAD the entire Tech Notes: Word or PDF Clearing BathsALWAYS ADD ACID TO WATER Different papers will respond differently to different types. Throw out the baths as they turn yellow. Last bath should always be clear! Here are some I've tried and found to work well 1- Kodak hypo clear (we have tested no other brands but they might work). Mix as per instructions for prints. Do 2 baths 8 mins each. It contains sodium sulfite as well as citric acid and edta. You can make a much cheaper version of this by adding 3-6 tablespoons Sodium sulfite and 3-6 tablespoons edta to 1 gallon of water. 2- hydrochloric acid (muriatic acid) 28% solution dilute 25-60 mls. to 1 gal water. Works very good, but is very toxic be careful! 3- citric acid for first 2 baths (diluted 4 to 6 tablespoons to 1 gallon tap water. Then use a 3rd bath sodium sulfite( 4 teaspoons to 1 gal water) very effective. 4. Solution for "pink" staining on rising paper: 2 baths of hydrochloric acid 25 to 60 mls to 1 gallon water then 3rd 5 min bath of 4 tablespoons of sodium sulfite and edta for 5 mins. All papers will react differently to each clearing bath so experiment to find the one that works best and is least toxic
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