📝 Before testing, the sample should be allowed to return to room temperature (20–30°C). Take a fresh sample, wipe off soil, and cut into pieces smaller than 1 cm square. Weigh 2.00±0.05 g of sample into a 15 mL centrifuge tube, then add 4 mL of extraction solvent, cap the tube, vortex or manually shake up and down for 1 min, and let stand for 1 min to obtain the sample solution. After sample pretreatment, spotting should be completed within 5 min. Sampling method refers to the "Administrative Measures for Food Safety Sampling and Inspection" (Order No. 15 of 2019 of the State Administration), and national standard limits refer to GB2763.

Before testing, the sample should be restored to room temperature (20–30°C). Take a fresh sample, wipe off soil, and cut into pieces smaller than 1 cm square. Weigh 2.00±0.05 g of the sample into a 15 mL centrifuge tube, then add 4 mL of extraction solution, close the lid, vortex or manually shake up and down for 1 min, and let stand for 1 min to obtain the sample solution. After sample pretreatment, spotting should be completed within 5 min. The sampling method refers to the "Administrative Measures for Food Safety Sampling Inspection" (Order No. 15 of the General Administration in 2019), and the national standard limits refer to GB 2763.

🧪 Test Procedure

before the experiment, Please read the instructions carefully before the experiment. Before use, allow the test card and the sample to be tested to return to room temperature. Remove the test card from its original packaging and use it immediately after opening. Using a disposable pipette, aspirate the test liquid and slowly drip 100 µL (approximately 3 drops) vertically into the sample well (S well). Start timing when the liquid flows, react for 10 minutes, then proceed.