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TWELVE methods of collecting samples for spreader pattern tests were evaluated in the laboratory using one spreader and two materials. The results indicated that there can be significant differences in the apparent rate, optimum swath width, amount of skewing, coefficient of variation of the overlapped pattern, and minimum and maximum points in the overlapped pattern resulting from the choice of collection methods. In this test, traditional baffled collection pans (as specified by ASAE S341.1) yielded coefficients of variation of 8 to 22% compared to coefficients of variation of 27 to 57% for the same spreader and materials using long, narrow pans and 21 to 41% for floor collection. Differences in minimum/maximum points in the patterns and degree of skewing were also very pronounced.