Description
FSTest Paper-based test strips was developed for the simple and rapid screening of organophosphate (OP) and carbamate (CM) pesticides based on the inhibition effects against acetylcholinesterase (AChE) activity.
In detail, the OP and CM pesticides in the sample have an inhibitory effect on AChE, which can catalyze the hydrolysis of indophenol acetate to produce acetic acid and indophenol. As a result, the indophenol is shown in blue, causing the change of color on the detect card. Thus, the absence or decrease of blue color is related to the amount of OP and CM residues in samples. The color signal in test zone makes the interpretation visual and easy.
Each FSTest Paper-based test strips consists of a foldable red cover and white detection sheets, which are pre-prepared with indoxyl acetate and AChE respectively. The card is designed at low-cost, with minimal reagents required, high detection sensitivity and easy to handle. Therefore, it would be friendly for operators without professional backgrounds.
Kit Content:
Detect Strip ×20, Instructions ×1.
Specifications:
Brand: FSTest
Quantity: 20 tests/pack
Shelf life: 12 months
Test Type: Pesticide Residue
Application:
Rapid detection of organophosphorus and carbamate pesticide residues in fruits, vegetables, tea and produce.
Recommended Industries:
Individual consumer, produce growers and processors, supermarkets, import and export market, inspection, and quarantine bureau.
Features:
1.Low limits of detection and high accuracy, but at a lower cost
2.Real rapid test, pesticide detect can result in as soon as 15mins
3.Easy to handle steps and interpret results
4.Easy to carry, on-site detection, no expertise required
5.Decades of R&D experience since 1993, professional brand and reliable quality, good reputation.
Sample Pre-prepared:
1.Surface sampling method
Select a vegetable sample, wipe off the surface soil, add 3 drops of buffer on the leaf surface and rub it with another vegetable gently. The liquid after rubbing on the sample surface is ready for the following test.
2.Fragment sampling method
Select a vegetable sample, wipe off the surface soil, cut the sample into small pieces. Weigh 5g sample and put it into a small beaker (or sampling bottle), mixed with 10ml buffer. Shake for over 50 times and stand for more than 2 min, then take the supernatant for the following test.
3.Whole sampling method
Select a vegetable sample, wipe off the surface soil, weigh 5g sample and put it into a small beaker (or sampling bottle), mixed with 10ml buffer. Shake for over 50 times and stand for more than 2 min, then take the supernatant for the following test.
Note:
It is recommended to use whole sampling method for onion, garlic, radish, leek, celery, coriander, chicory, mushroom, tomato, and high chlorophyll vegetables to reduce the interference.
Testing steps:
1.Incubation
Take two strips and uncover the film on the surface.
Strip A: pipette 80ul of sample solution onto the white detection sheets.
Strip B: pipette 80ul buffer onto the white detection sheets as a control.
Incubate for 10mins at room temperature.
2.Reaction
Fold the strip A and B along their middle line at the same time, then pinch the strip with hand for 3min.
3.Interpret