Weiyel Reference Materials
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Dichlorvos is an organophosphate pesticide classified as moderately to highly toxic and potentially carcinogenic; its use for disinfection in food service establishments and residential environments has long been strictly prohibited. Characterized by strong adhesion and persistence, Dichlorvos residues cannot be completely removed through routine ventilation, wiping, or washing. Long-term human exposure can damage the liver, kidneys, and nervous system, while excessive levels can cause poisoning, posing a serious threat to consumer health.
As hidden pesticide residues cannot be detected by the naked eye, laboratory testing is essential for risk identification. Specializing in the development of certified reference materials, Weiyel Metrology has developed specific reference materials to meet testing needs for Dichlorvos and organophosphate residues in food service environments and on tableware surfaces, thereby providing accurate metrological support for residue testing.
| Product No. | Product Name | Value | Specifications |
| GBW(E)086133 | Dichlorvos standard solution in methanol | 1000μg/mL | 1.2mL |
| BWQ7290-2016 | Dichlorvos standard solution in methanol | 100μg/mL | 1.2mL |
| BWN5284-2016 | Dichlorvos standard solution in acetone | 100μg/mL | 1.2mL |
| BWN5283-2016 | Dichlorvos certified reference material in acetone | 1000μg/mL | 1.2mL |
| BWN5534-2016 | Mixed standard solution of 5 organophosphorus pesticides in methanol | 100μg/mL | 1.2mL |
| BWN5456-2016 | Mixed standard solution of 6 organophosphorus pesticides in acetone | 100μg/mL | 1.2mL |
To support food risk monitoring, Weiyel has developed a range of heavy metal quality control samples based on common food matrices—such as rice flour, soy sauce, and fish meal—providing robust quality assurance for heavy metal testing. This series of reference materials can serve as working standards for routine analysis and testing, as well as for laboratory quality control activities such as method validation and instrument calibration.
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