SN/T 1584-2005Rules for the quarantine of maize for export (English PDF)

3.1 Review documents and clarify quarantine requirements

The inspection data should be complete, clear and effective, and according to Chapter 2, quarantine tasks should be clarified, and quarantine methods and quarantine contents should be determined.

3.2 Preparing on-site quarantine tools

Ordinary hand-held magnifying glass (10×), round hole screen (4.5mm~5.5mm), double casing sampler (1.2m~1.5m), single tube sampler (0.5m ~ 0.7m), tweezers, finger tubes, labels, porcelain plates, sample bags, etc.

4 on-site quarantine

4.1 Document verification

First check whether the registered warehouse, goods (warehouse), batch code (smoke), weight, quantity, origin, etc. are filled in with the check-in form.

Match.

4.2 Quarantine of bulk corn

4.2.1 Corn stacked in bulk

4.2.1.1 Sample

The stacking height of bulk corn should not exceed 1.5m, with about 500m2 as a sample batch (about 500t) and 50 pieces in a checkerboard pattern.

For the sample, use a double-tube sampler and take 1 sample of the original sample, the total weight is not less than 8kg, and sent to the laboratory for inspection.

4.2.1.2 Inspection

At the same time as the sample, at least 2 kg of corn was taken from each sample and sieved with a round sieve. Rotate 6 times to 10 times during screening, with the naked eye or a magnifying glass to check whether there are insects, weed seeds, rice grains, rice husks, broken straw, and small soil particles in the sieve;

Suspicious corn grain, long straw and large clods are recorded in detail.

Insects, weed seeds, and suspected corn granules that cannot be identified on site are loaded into the finger tube and labeled, and brought back to the laboratory for further identification.

At the same time of screening, attention should be paid to the presence or absence of live insects, and the biological characteristics of insects and weed seeds and the natural distribution formed during unloading should be considered.

Sexually increase screening samples.

4.2.2 Corn stored in bulk cylinders

4.2.2.1 Inspection before entering the warehouse

4.2.2.1.1

Before the bulk corn enters the cylinder silo, the same delivery station does not exceed 500t as a sample batch, and each vehicle is randomly set with 6~10 samples.