• chemicals -- these are all reagent grade chemicals
  
  • chemicals metol (25 grams) $ 4.78
  • chemicals sodium sulfite (25 grams) $ 2.26
  • chemicals sodium bisulfite (25 grams) $ 2.38
  • chemicals thiourea (25 grams) $ 2.31
  • chemicals potassium citrate (25 grams) $ 2.30
  • chemicals potassium metabisulfite (25 grams) $ 2.30
  • chemicals sodium thiosulfate (25 grams) $ 2.25
  • chemicals sodium sulfide (25 grams) $ 2.48
  • chemicals sodium nitrite (25 grams) $ 2.50
  • chemicals tartaric acid (25 grams) $ 2.68
  • chemicals citric acid (25 grams) $ 2.31
  • chemicals sodium carbonate monohydrated (25 grams) $ 2.25
  • chemicals potassium bromide (25 grams) $ 2.27
  • chemicals potassium alum (25 grams) $ 2.58
  • chemicals sodium metabisulfite (25 grams) $ 2.30
  • chemicals sodium citrate (25 grams) $ 2.39
  • chemicals pyrocatechol (25 grams) $ 2.74

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