📝 Ensure that samples are brought to room temperature (20–30°C) prior to testing. 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, and vortex or manually shake up and down for 1 min. 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) Melon, wax apple, lychee, sweet potato | 0.1 | No dilution needed; use directly as test solution Hawthorn, plum, blueberry, mulberry, grape, mango, strawberry, garlic, tomato, eggplant, green pepper, sweet pepper, spiral pepper, wrinkled green pepper, zucchini, bitter gourd, cowpea, kidney bean, edible-podded pea, pea, stem lettuce | 0.2 | 500+500 Hangzhou pepper, Erjingtiao chili | 0.2 | 300+700 Cherry | 0.3 | 335+665 Kiwi, cauliflower, celery, peach, okra | 0.5 | 200+800 Lemon, cabbage, Chinese cabbage, choy sum, cucumber | 1 | 100+900 Kumquat, Chinese kale, spinach, bok choy, romaine lettuce, stem lettuce leaf, leaf lettuce | 2 | 50+950 Amaranth | 5 | 20+980 Note: The table above does not list all testable samples. The applicability of unlisted samples must be confirmed with our Technical Center. This product cannot be used for testing millet peppers or chives. For sampling methods, refer to the "Administrative Measures for Food Safety Sampling Inspection" (2019 Order No. 15 of the State Administration for Market Regulation). For national standard limits, refer to GB 2763.

Before testing, samples should be restored to room temperature (20–30°C). Take fresh samples, wipe off soil, and cut into fragments smaller than 1 cm square. 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) | |-------------|--------------------------------|------------------------------------------------| | Melon, Wax apple, Lychee, Sweet potato | 0.1 | No dilution required, use directly as test solution | | Hawthorn, Plum, Blueberry, Mulberry, Grape, Mango, Strawberry, Garlic, Tomato, Eggplant, Green pepper, Sweet pepper, Spiral pepper, Wrinkled green pepper, Zucchini, Bitter melon, Cowpea, Common bean, Edible-podded pea, Pea, Stem lettuce | 0.2 | 500 + 500 | | Hangzhou pepper, Erjingtiao chili pepper | 0.2 | 300 + 700 | | Cherry | 0.3 | 335 + 665 | | Kiwifruit, Cauliflower, Celery, Peach, Okra | 0.5 | 200 + 800 | | Lemon, Cabbage, Chinese cabbage, Choy sum, Cucumber | 1 | 100 + 900 | | Kumquat, Chinese kale, Spinach, Bok choy, Romaine lettuce, Stem lettuce leaf, Leaf lettuce | 2 | 50 + 950 | | Amaranth | 5 | 20 + 980 | Note: The above table does not list all testable samples. The applicability of unlisted samples must be confirmed with our technical center. This product cannot be used for testing millet pepper and Chinese chives. Sampling method refers to the "Food Safety Sampling Inspection Management Measures" (2019 Order No. 15 of the State Administration for Market Regulation). National standard limits refer to GB 2763.

🧪 Test Procedure

before the experiment, Before the experiment, carefully read the instructions. Before use, allow the test card, microwell reagent, and sample to equilibrate to room temperature. Remove the test card from the original packaging. After opening, use within 60 min as soon as possible. Label and use immediately. After removing the required microwell reagent, immediately close the reagent barrel cap to prevent moisture absorption. Using a micropipette, aspirate 100 µL of sample solution into the microwell reagent, slowly aspirate (2–3 times) to mix thoroughly with the microwell reagent. After incubation at room temperature for 3 min, using a pipette, aspirate 100 µL of the mixed solution and vertically dispense it into the sample well (S well), or use the disposable dropper provided in the kit to aspirate the mixed solution and slowly add 3 drops vertically into the sample well (S well). Start timing when liquid begins to flow. React for 10 min, then immediately read the result.