Dick Smith's Formula for Stage Blood

Notice: The information in this bulletin is presented
in good faith but no warranty, express or implied, is
given and Dick Smith assumes no liability for the use
of this material.
Clear Karo Syrup Zinc Oxide Red   Yellow Kodak Photo-Flo water
1 pt. ½ level tsp. 1 oz.   2½ tsp. 1 oz. 1 oz.
1 qt. 1 level tsp. 2 oz.   5 tsp. 2 oz. 2 oz.
2 qts. 2 level tsp. 4 oz    1 oz. + 4 tsp 4 oz. 4 oz.
3 qts. 3 level tsp. 6 oz.    2½ oz. 6 oz. 6 oz.
1 gallon 4 level tsp. 8 oz.    3 oz. + 2 tsp. 8 oz. 8 oz.

NOTE: Blood containing Kodak Photo-Flo can NOT be used in the mouth.


MIXING PROCEDURES:

1.    Put zinc oxide into a bowl.  Add equal amount of water and stir into a paste.

2.   Add food colors and stir.

3.   Add some of the Karo syrup and stir well until mixed.

4.   Pour mixture into a container that is large than the amount of blood that is             being made.( for instance: 3 quarts in a gallon container.) because Karo
      blood must be shaken before using to re-mix the zinc oxide.  Add the
      remaining amount of Karo syrup indicated.

5.   IF THE BLOOD WILL NOT BE USED IN THE MOUTH, the Photo-flo
      can be added.  Photo-Flo is a wetting agent which makes the blood flow over
      surfaces without "beading" and causes it to soak into fabric naturally.
      Blood containing Photo-flo should be shaken gently to avoid excess foaming
      Half the amount of Photo-Flo indicated may be sufficient.

6.   Adding the amount of water indicated will give normal blood consistency.

NOTES:

1.  Most red food colors are very similar but yellows vary.  EHLERS yellow
     stained white paper lemon yellow.  SCHILLING, McCORMICK, CROWN
     are more orange.   Therefore when using such yellows, use one half the amount
     indicated in the formula.

2.  Zinc oxide in the formula is the pure powder form. (U.S.P.) obtainbale from a
     druggist or chemical supply.  In the small amounts used it it harmless. It gives
     some opacity.

3.  White "universal colorants" obtained from a paint store can be mixed into the
      Karo easily without the water but CANNOT BE USED IN THE MOUTH.

4.  Karo blood may get moldy or fermented in time, so keep refrigerated when
     possible.

5.  Although the formula matches true blood, it may look too bright on white
     materials.  Use about 35 drops of green food color per quart of Karo blood to
     darken.  There are about 100 drops in ½ teaspoon.  3 teaspoons in 1
     tablespoon.   6 teaspoons in 1 ounce.

6.  For thin blood to pump through special effects tubes, use same formula with
     Photo-Flo but substitute Karo diluted with an equal amount of water but for the
     amount of Clear Karo indicated above. (see 5 gallon formula)

7.   Karo blood can be thickened with peanut butter.  Cab-O-Sil can be mixed into
      the Karo to make a sticky paste.

8.  Regular Karo blood washes off skin and clothes but the diluted formulation
     stains some.

© 1979 Dick Smith

...go here for the 5 gallon formula.