Description for Flowchart - Domestic Seed Potatoes Inspection Process: SPTQMP
This flowchart describes the steps that a grower or a designated representative needs to follow to complete a tuber inspection.
For the first 0-100 MT graded per lot
Start
Assemble the required inspection material (Refer to Section 4.0 of PI-009), Draw a random sample of 1000 tubers from at least 5 different locations in the graded lot (each shipment must be sampled).
Note: The sample must be randomly selected (randomly drawn from across the entire volume being sampled). Record the general information on report.
Oversize & undersize verification
Draw a random sub sample of 250 tubers. If oversized or undersized tubers are found, set them aside and record the weight of the portion of oversized/undersized tubers, subsequently incorporate them into the sub-samples and weigh the entire sub sample of 250 tubers. Record result on inspection report. Return the oversized and undersized tubers and the rest of the sub sample to the original 1000 tubers sample
Scoreable defects
Remove and set aside the tubers with scoreable defects from the 1000 tubers sample. Record result on inspection report. Discard the tubers with scorable defects from the sample.
Internal defects
From the tubers that do not present scorable defects, draw a representative sub sample of 50 tubers.
Note: The evaluation of the internal defects must be done on tubers that do not present scoreable defects (tubers with scoreable defects should be discarded from the main sample before the selection of the sub sample that will be used to assess the internal defects. Cut the tubers from the sub sample and inspect for internal defects. Meets tolerance for internal defects? Yes, Record result on inspection report. No, Increase the sub sample size to at least 200 tubers and inspect for internal defects.
Finish
Subsequent 0-100 MT graded per lot
Start
Assemble the required inspection material (Refer to Section 4.0 of PI-009), Draw a random sample of 250 tubers from at least 5 different locations in the graded lot (each shipment must be sampled).
Note: The sample must be randomly selected (randomly drawn from across the entire volume being sampled).Record the general information on report.
Oversize & undersize verification
If oversized or undersized tubers are found, set them aside and record the weight of the portion of oversized/undersized tubers, subsequently incorporate them into the sub-samples and weigh the entire sub sample of 250 tubers. Record result on inspection report
Return the oversized and undersized tubers to the original 250 tubers sample
Scoreable defects
Remove and set aside the tubers with scoreable defects from the 1000 tubers sample. Record result on inspection report. Discard the tubers with scorable defects from the sample.
Internal defects
Previous
inspection within tolerance for internal defects? Yes, from the tubers that do not present scorable defects, draw a representative sub sample of 25 tubers2. No, from the tubers that do not present scorable defects, draw a representative sub sample of 50 tubers2. Note 2: The evaluation of the internal defects must be done on tubers that do not present scoreable defects (tubers with scoreable defects should be discarded from the main sample before the selection of the sub sample that will be used to assess the internal defects.
Cut the tubers from the sub sample and inspect for internal defects Meets tolerance for internal defects? Yes, Record result on inspection report. No, Increase the sub sample size to at least 200 tubers and inspect for internal defects.
Finish