📝 Before testing, samples should be returned to room temperature (20–30°C). Wipe off soil from fresh samples, then cut into pieces smaller than 1 cm². Weigh 2.00 ± 0.05 g of sample into a 15 mL centrifuge tube, add 6 mL of extraction solution, cap the tube, vortex or manually shake vigorously for 1 min, then let stand for 5 min to obtain the sample solution. According to the testing requirements, dilute as per the table below to obtain the test solution. | Sample Name | National Standard Limit (mg/kg) | Sample Solution (µL) + Extraction Solution (µL) | |-------------|-------------------------------|------------------------------------------------| | Cucumber, Chinese kale, hairy melon, sweet pepper, sweet potato, apple, pear, melon, orange, tangerine, kiwifruit, nectarine, watermelon, strawberry, apricot | 0.02 | No dilution required, directly used as test solution | | Tomato | | 900 + 100 | | Grape, peach | 0.03 | 900 + 100 | | Head cabbage, celery, Chinese chive, Chinese cabbage, broccoli, crown daisy, onion, garlic scape, fresh jujube, cowpea, bok choy, banana, snow pea | 0.05 | 600 + 400 | | Spinach, leaf lettuce, lettuce, bitter gourd, ginger, garlic, mango | | 400 + 600 | | Sword bean | 0.08 | 400 + 600 | | Spring onion, choy sum, small rape, okra, common bean, water spinach, fresh wolfberry, dragon fruit, pineapple | 0.1 | 300 + 700 | | Papaya | | 200 + 800 | | Eggplant | 0.2 | 200 + 800 | | Leaf mustard, lychee | | 150 + 850 | | Water bamboo | 0.3 | 120 + 880 | | Cauliflower | 0.5 | 60 + 940 | Note: The above table does not list all testable samples. For the applicability of samples not listed, please confirm with our Technical Center. After sample preparation, spotting should be completed within 5 min. Sampling methods refer to the "Administrative Measures for Food Safety Sampling Inspection" (2019 Order No. 15 of the State Administration for Market Regulation), and national standard limits refer to GB 2763.

Before testing, samples should be returned to room temperature (20–30°C). Take fresh samples, wipe off soil, and cut into pieces smaller than 1 cm². Weigh 2.00 ± 0.05 g of sample into a 15 mL centrifuge tube, add 6 mL of extraction solution, close the lid, vortex or manually shake up and down for 1 min, and let stand for 5 min to obtain the sample solution. According to testing requirements, dilute as per the table below to obtain the test solution. | Sample Name | National Standard Limit (mg/kg) | Sample Solution (µL) + Extraction Solution (µL) | |-------------|--------------------------------|------------------------------------------------| | Cucumber, Chinese kale, Hairy gourd, Sweet pepper, Sweet potato, Apple, Pear, Melon, Orange, Mandarin, Kiwifruit, Nectarine, Watermelon, Strawberry, Apricot | 0.02 | No dilution needed; use directly as test solution | | Tomato | | 900 + 100 | | Grape, Peach | 0.03 | 900 + 100 | | Head cabbage, Celery, Chinese chives, Chinese cabbage, Broccoli, Crown daisy, Onion, Garlic scape, Fresh jujube, Cowpea, Pak choi, Banana, Snow pea | 0.05 | 600 + 400 | | Spinach, Romaine lettuce, Leaf lettuce, Bitter gourd, Ginger, Garlic, Mango | | 400 + 600 | | Sword bean | 0.08 | 400 + 600 | | Scallion, Choy sum, Small rape, Okra, Common bean, Water spinach, Fresh goji berry, Dragon fruit, Pineapple | 0.1 | 300 + 700 | | Papaya | | 200 + 800 | | Eggplant | 0.2 | 200 + 800 | | Leaf mustard, Lychee | | 150 + 850 | | Water bamboo | 0.3 | 120 + 880 | | Cauliflower | 0.5 | 60 + 940 | Note: The table above does not list all testable samples. The applicability of unlisted samples must be confirmed with our technical center. After sample preparation is complete, spotting must be finished within 5 min. Sampling method refers to the "Administrative Measures for Sampling Inspection of Food Safety" (2019 Order No. 15 of the State Administration for Market Regulation), and national standard limits refer to GB 2763.

🧪 Test Procedure

before the experiment, Before the experiment, please read the instructions carefully. Allow the test card and the sample to equilibrate to room temperature before use. Remove the reagent bucket and test strip bag from the original packaging, take out the required number of microwell reagents and test cards, and label them. Use within 60 minutes. Using a pipette, add 100 μL of the sample solution into the microwell, slowly pipette up and down to mix thoroughly with the microwell reagent. Incubate at room temperature for 3 minutes, then using a pipette, vertically add approximately 100 μL of the mixed solution into the sample well (S well), or using the disposable dropper provided in the kit, vertically and slowly add 3 drops of the mixed solution into the sample well (S well). Start timing when the liquid flows. Allow to react for 10 minutes, then immediately interpret the result according to the schematic diagram. Interpretations at other times are invalid.