Imidacloprid rapid test card instruction manual

[Product introduction]

This product is suitable for qualitative detection of imidacloprid residues in fresh vegetables and fruit samples. For details of sample types and detection limits, please refer to the dilution list. The minimum detection limit is 0.05mg/kg.

[Product composition] Specifications: 20 parts/box

Name

Quantity

Name

Quantity

Imidacloprid rapid test card

20 parts

dilution

1 bottle

Instructions

1 parts

disposable dropper

20 pieces 11727798150ml centrifuge tube

1 pieces

1 .5ml centrifuge tube

2 pieces

[Sample processing] Remarks: The sample size should be chopped into less than 1cm square pieces)

2, measure and add 3ml of dilution, mix manually upside down (amplitude 50 times/min), fully wash the sample for 2 minutes, let stand for 1 minute, to obtain the sample liquid, before testing with a 1.5mL centrifuge tube to dilute the sample liquid with the diluent in different proportions to obtain the liquid to be tested (sample liquid + dilution).

[Different sample detection limits and dilution ratio]

Below are various types of samples to be tested. Before testing, users need to dilute the operation. The dilution list is as follows:

Sample name

National standard limited GB2763-2021

sample solution + dilution

lotus seeds, lotus root

0 .05mg/kg

No dilution

Garlic, onion, bitter melon, winter squash, pumpkin, beans, vegetable soybeans, sweet potatoes, bamboo shoots, melons) 11727798400.1mg/kg

500ul+500ul

Sweet potato leaves, Chinese cabbage, bell peppers, asparagus, carrots 117277984009.2mg/kg

200ul+400ul

green garlic, garlic sprouts, Brussels sprouts, vegetable sprouts, ordinary cabbage, zucchini, loofah, pod peas, broad beans, peas, potatoes, water sprouts, fruits: apples, pears, peaches, nectarines, apricots 117 Rape, tomato, eggplant, chili, cucumber, zucchini, fruit: tangerine, orange, pomelo, bergamot, kumquat, grape

1 mg/kg

50ul+950ul

legumes and vegetables (beans, pod peas, vegetables except soybeans, broad beans and peas)

2 mg/kg

20ul+780ul

kale, spinach, radish leaves, celery, berries and other small fruits (except lingonberries, grapes, strawberries)

5mg/kg

10ul+990ul

[use steps]

1, read the instructions completely before the test, and restore the test card and the sample solution to room temperature (20 ℃ -30 ℃) before use.

2, remove the test card/dropper (a total of 2 consumables) from the aluminum foil bag, and place it horizontally on the front of the observer;

3, use the dropper in the aluminum foil bag to absorb the above diluted solution to be tested in different proportions 120 microliters (about 4 drops) in the test card plus the sample hole (S), and start timing after

4. The results should be read in 5-8 minutes, and the result interpretation at other times is invalid.

[Results Judgment]

Negative (1): The color development of the T-line (detection line, near the end of the sample hole) is darker or the same as that of the C-line (control line), indicating that the concentration of imidacloprid pesticide residues in the sample is lower than the detection limit value or no imidacloprid pesticide residues.

Positive (+): The color development of the T-line is lighter than that of the C-line, indicating that the concentration of imidacloprid pesticide residues in the sample is higher than the detection limit value; the shallower the T-line is than the C-line, indicating that the concentration of imidacloprid pesticide residues in the sample is higher.

Invalid: There is no In this case, the instructions should be read carefully again and re-tested with a new test card. If the problem still exists, stop using this batch of products immediately and contact the local supplier.

[Precautions]

l The test card is used at one time, do not use the expired test card;

l Do not touch the white film surface in the center of the test card;

l Do not reuse the equipped dropper to avoid cross-contamination;

[Storage conditions and valid period

4 ℃~ 30 ℃ Store in the dark, do not freeze, valid period 12 months.

[Production date and batch number]

See the bag for details.