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Antibiotic Stock Recipes
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1000X Ampicillin (Amp)
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1. Dissolve 100 mg of Ampicillin powder in 1 mL sterile/ELGA water  
   (1 g of Ampicillin powder in 10 mL sterile/ELGA water).
2. Sterilize with 0.22 uM filter.
3. Make 1 mL aliquots and store at -20ºC. 

1000X Kanamycin (Kan)
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1. Dissolve 50 mg of Kanamycin powder in 1 mL sterile/ELGA water 
   (500 mg of Kanamycin powder in 10 mL sterile/ELGA water).
2. Sterilize with 0.22 uM filter.
3. Make 1 mL aliquots and store at -20ºC. 

1000X Chloramphenicol (Chlor)
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1. Dissolve 34 mg of Chloramphenicol powder in 1 mL 70% EtOH
   (340 mg of Chloramphenicol powder in 10 mL 70% EtOH).
2. No filtration step is needed. 
3. Make 1 mL aliquots and store at -20ºC.