AGRICULTURE HANDBOOK 134, U.S. DEPT. OF AGRICULTURE 



Table 15. — Water to add to heavy sirup (66.1° to 

 70.0° Brix) to obtain 66°-Brix sirup 



True Brix value of 

 undiluted sirup ' 



(1) 



Amount of water to add 

 to heavy sirup ^ 



Per 100 pounds Per pound 



(2) (.3) (4) 



Fluid 



Pints Ounces ounces 



66.1° 2 0.02 



66.2° 5 .05 



66.3° 7 .07 



66.4° 10 .10 



66.5° 12 .12 



66.6° 15 .15 



66.7° 1 1 .17 



66.8° 1 3 .19 



66.9° 1 6 .22 



67.0° 1 8 .24 



67.1" . 1 11 .27 



67.2° 1 13 .29 



67.3° 2 .32 



67.4° 2 2 .34 



67.5° 2 4 .36 



67.6° 2 7 .39 



67.7° 2 9 .41 



67.8° 2 12 .44 



67.9° 2 14 .46 



68.0° 3 1 .49 



68.1° 3 3 .51 



68.2° 3 5 .53 



68.3° 3 8 .56 



68.4° 3 10 .58 



68.5° 3 13 .61 



68.6° 3 15 .63 



68.7° 4 1 .65 



68.8° 4 4 .68 



68.9° 4 6 .70 



69.0° 4 9 .73 



69.1° 4 11 .75 



69.2° 4 14 .78 



69.3° 5 .80 



69.4° 5 2 .82 



69.5° 5 5 .85 



69.6° 5 7 .87 



69.7° 5 10 .90 



69.8° 5 12 .92 



69.9° 5 15 .95 



70.0° 6 1 .97 



' ° Brix of sirup after correction for temperature. 



" For practical approximations, pints = pounds avoirdu- 

 pois, and fluid ounces = ounces avoirdupois. 



that the added water has been uniformly mixed 

 with all the sirup. Then check the Brix value of 

 the adjusted sirup to be sure that it is the 

 correct density (66° Brix). Each additional heat- 

 ing causes an additional darkening of the sirup; 

 therefore, try to make sirup of the correct 

 density when the sap is first evaporated. 



The following examples show how to use 

 table 15 in calculating the amount of water to 

 add to heavy sirup to yield a 66°-Brix sirup. 



Example 1. A 100-pound sample of heavy 

 sirup has a true density of 69.7° Brix. How 

 much water should be added to adjust this 

 sirup to 66° Brix? 



In table 15 locate 69.7° Brix. Opposite this in 

 columns 2 and 3 is 5 pints and 10 ounces, the 

 amount of water to add to the 100 pounds of 

 heavy sirup to adjust it to 66° Brix. 



Example 2. If only 12 pounds of the sirup in 

 example 1 is being adjusted, how much water 

 should be added? 



Table 15 column 4 shows that 0.9 fluid ounce 

 of water must be added to adjust 1 pound of 

 69.7°-Brix sirup to 66° Brix. For 12 pounds, 

 12x0.9 or 10.8 fluid ounces of water is required 

 to adjust 12 pounds of 69.7°-Brix sirup to 66° 

 Brix. 



Example 3. How much water should be added 

 to 26 pounds of 68.2f'-Brix sirup to change its 

 density to 66° Brix? 



In table 15 locate 68.2° Brix. Opposite this in 

 column 4 find the value of 0.53 fluid ounce, the 

 amount of water to add to 1 pound of 68.2f-Brix 

 sirup. Then, 26x0.53, or 13.8 fluid ounces of 

 water is required to adjust 26 pounds of 68.2°- 

 Brix sirup to 66° Brix. 



Summary 



(1) Do not check the density of sirup by weight, 

 unless precision instruments are available. 



(2) The minimum allowable density is 66.0° 

 Brix (at 6? F.) or 35.6° Baume (at 68° F.). 

 Sirup that has a density of 66.5° to 67° Brix 

 (at 68^ F.) has a higher viscosity and tastes 

 better. 



(3) To test the density of sirup with a hydrome- 

 ter, fill the can or jar to the top with sirup. 



(4) Use only a clean, dry hydrometer. 



(5) Lower the hydrometer into the sirup care- 

 fully until it comes to rest. 



