142 MISC. PUB. 190, U.S. DEPT. OF AGRICULTURE 
damage caused by scars, freezing, disease, insects, 
or mechanical or other means. 
The diameter of each stalk shall be not less than 
1 inch, and the length shall be not less than 10 inches. 
U.S. No. 1 shall consist of stalks of rhubarb of 
Similar varietal characteristics which are well col- 
ored, fresh, tender, straight, clean, well trimmed, and 
not pithy; which are free from decay, and from dam- 
age caused by scars, freezing, disease, insects, or 
mechanical or other means. 
Unless otherwise specified the diameter of each 
stalk shall be not less than three fourths of an inch, 
and the length shall be not less than 10 inches. 
U.S. Ne. 2 shall consist of stalks of rhubarb of 
Similar varietal characteristics which are fairly well 
colored, fresh, fairly straight, clean, well trimmed, 
and not pithy; which are free from decay, and from 
serious damage caused by scars, freezing, disease, 
insects, or mechanical or other means. 
Unless otherwise specified the diameter of each 
stalk shall be not less than one half of an inch, and 
the length shall be not less than §&§ inches. 
TOLERANCE 
In order to allow for variations, other than size, 
incident to proper grading and handling in each of the 
foregoing grades, not more than 10 percent, by count, 
of the stalks in any container *’ may be below the 
requirements of the grade but not more than one tenth 
of this tolerance, or 1 percent, shall be allowed for 
stalks affected by decay. In addition, not more than 
5 percent, by count, of the stalks in any container™ 
may be below the specified diameter, and not more 
than 5 percent, by count, may be below the specified 
length. 
Unclassified shall consist of rhubarb which is not 
eraded in conformity with any of the foregoing grades. 
57 Application of tolerances: The tolerances specified for 
these grades are placed on a container basis. However, any 
lot of rhubarb ghall be considered as meeting the require- 
ments of the grade, if the entire lot averages within the 
tolerances specified, provided that no sample from the con- 
tainers in any lot is found to exceed the following amounts: 
For a specified tolerance of 10 percent, not more than 1% 
times the tolerance shall be allowed in any 1 package. For 
specified tolerances of 5 percent or less, not more than 
double the tolerance shall be allowed in any 1 package. 
