I think that I figured it out Comments please:
Recipe
1 kilogram sugar = 2.2 pounds
1 liter water = .9 quart
75 grams oxalic acid dihydrate = 2/3 cup
Combining sugar, water, and oxalic acid dihydrate gives approximately 1.66 liters ( 7 cups or 1660 millileters) of solution,e.g., enough for 33 3# packages.
50 milliliters = 10 teaspoons = 3.4 tablespoons = .2 cup
Use no more than 50 ml of the solution for each #3 package and dump the rest.
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ETA
100g Oxalic Acid Dihydrate Laboratory Grade 100g On Ebay $1.53
PLUS Shipping GBP 2.38 ($3.68) United States Royal Mail Airmail (Small Packets)http://www.ebay.com/itm/100g-Oxalic-Acid-Dihydrate-Laboratory-Grade-/290607685030?pt=UK_BOI_Medical_Lab_Equipment_Lab_Supplies_ET&hash=item43a9915da6 ***********************
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