Professional Model *I8- 5C 
Our finest equipment—widely used by large growers, 
nurseries and Government Departments. Makes 200 
individual tests for nitrogen, phosphorus, potash and 
acidity Cased in strong metal box which will last 
indefinitely. Complete instructions. Helpful chart shows 
needs of lawn grasses, flowers, shrubs, vegetables. Inex¬ 
pensive refills available. Price $18.50. 
Horticultural model, similar to above, but contain¬ 
ing only one-third as much testing solution, $9.75. 
REFILLS are available for all Sudbury Soil Test 
Kits, regardless of price. Thus your purchase is a lasting 
investment in soil testing equipment. In ordering, please 
specify for which kit you want solutions, as the solutions 
differ in the various models. 
SOIL TESTING SOLUTION—FOR NITROGEN, 
PHOSPHORUS, POTASH OR ACIDITY 
Per 2-oz. bottle ... $ .75 
Per 6-oz. bottle ... 1.50 
Manufactured by 
Sudbury Soil Testing Laboratory 
South Sudbury, Massachusetts, U. S. A. 
