📝 Before testing, the sample should be brought to room temperature (20–30°C) and cut into pieces smaller than 1 cm. Weigh 2.00 ± 0.05 g of the sample into a 15 mL polystyrene centrifuge tube, then add 3 mL of extraction liquid, cap the tube, vortex or manually shake up and down for 1 min, and let stand for 1 min to obtain the test solution. Note: After sample pretreatment, complete spotting within 5 min.

Before testing, the sample should be returned to room temperature (20–30°C) and cut into pieces smaller than 1 cm. Weigh 2.00 ± 0.05 g of sample into a 15 mL polystyrene centrifuge tube, then add 3 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 test solution. Note: After sample pretreatment is completed, spotting should be performed within 5 min.

🧪 Test Procedure

Before testing,, Please Firstread the operating instructions carefully. Before testing, the sample should be brought to room temperature (20–30°C), and cut into pieces smaller than 1 cm. Weigh 2.00±0.05 g of sample into a 15 mL polystyrene centrifuge tube, then add 3 mL of extraction solution, cap the tube, vortex on a vortex mixer or shake manually up and down for 1 min, and let stand for 1 min to obtain the test solution. Note: After sample pretreatment, sample application should be completed within 5 min.