📝 Before testing, the sample should be restored to room temperature (20–30°C). For fresh samples, wipe off the soil, then cut into pieces smaller than 1 cm on each side. 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 vigorously for 1 min, and let stand for 5 min to obtain the sample solution. According to the testing requirements, dilute and mix as per the table below to obtain the test solution. Sample Category | Sample Name | National Standard Limit (mg/kg) | Sample Solution (μL) + Extraction Solution (μL) Fruit | Lemon, Pomelo, Plum, Cherry, Fresh Jujube, Strawberry, Fig, Lychee, Pineapple, Olive | 0.5 | 40 + 960 Mulberry | 1 | 25 + 975 Banana, Peach, Watermelon, Apricot, Mango | 2 | 20 + 1980 Grape, Pear | 3 | 15 + 1985 Tangerine, Mandarin, Orange, Apple, Kiwifruit | 5 | 8 + 1992 Longan | 10 | 6 + 1994 Vegetable | Edible-podded Pea | 0.02 | No dilution required; use as test solution Vegetable Soybean, Carrot, Lotus Root, Lotus Seed | 0.2 | 125 + 875 Bitter Gourd | 0.3 | 75 + 925 Brussels Sprout, Zucchini, Snap Bean, Asparagus | 0.5 | 50 + 950 Leaf Mustard, Celery | 1 | 25 + 975 Chinese Chive, Pepper, Cucumber | 2 | 20 + 1980 Eggplant, Tomato | 3 | 15 + 1985 Head Lettuce | 5 | 8 + 1992 White Mushroom | 10 | 6 + 1994 Note: The table above does not list all detectable samples. For samples not listed, please confirm applicability with our technical center. After sample pre-treatment, spotting should be completed within 5 min. Sampling method refers to the *Provisions for Food Safety Sampling Inspection and Management* (Order No. 15 of the State Administration for Market Regulation, 2019). National standard limits refer to GB 2763.

Before testing, the sample should be restored to room temperature (20～30℃). Take a fresh sample, wipe off soil, and cut into pieces smaller than 1 cm in size. 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, then let stand for 5 min to obtain the sample solution. According to testing requirements, dilute and mix as per the table below to obtain the test solution. Sample Classification | Sample Name | National Standard Limit (mg/kg) | Sample Solution (μL) + Extraction Solution (μL) --- | --- | --- | --- Fruit | Lemon, pomelo, plum, cherry, jujube (fresh), strawberry, fig, litchi, pineapple, olive | 0.5 | 40+960 | Mulberry | 1 | 25+975 | Banana, peach, watermelon, apricot, mango | 2 | 20+1980 | Grape, pear | 3 | 15+1985 | Tangerine, orange, apple, kiwifruit | 5 | 8+1992 | Longan | 10 | 6+1994 Vegetable | Edible-podded pea | 0.02 | No dilution required; use directly as test solution | Vegetable soybean, carrot, lotus root, lotus seed | 0.2 | 125+875 | Bitter gourd | 0.3 | 75+925 | Brussels sprout, zucchini, kidney bean, asparagus | 0.5 | 50+950 | Leaf mustard, celery | 1 | 25+975 | Chinese chive, chili pepper, cucumber | 2 | 20+1980 | Eggplant, tomato | 3 | 15+1985 | Head lettuce | 5 | 8+1992 | Button mushroom | 10 | 6+1994 Note: The table does not list all testable samples. For the applicability of unlisted samples, please confirm with our technical center. After sample preparation, spotting should be completed within 5 min. For sampling methods, refer to the "Measures for the Administration of Food Safety Sampling and Inspection" (2019 Order No. 15 of the State Administration for Market Regulation); for national standard limits, refer to GB 2763.

🧪 Test Procedure

before the experiment, Please read the instructions carefully before the experiment. Before use, bring the test card and the sample to be tested to room temperature. Remove the test strip from the original packaging bag and use it immediately after opening. Use a pipette to draw 100 μL of the test liquid and slowly add it vertically into the sample well (S well). Alternatively, use the disposable dropper provided in the kit to draw the test liquid and slowly add 3 drops vertically into the sample well (S well). Start timing when the liquid flows, react for 10 min, and read immediately.