China is a traditional tea production, consumption and exporting country. Tea is an indispensable drink in people's daily life. In the weighing and preservation process of tea, people often use pesticides to kill insects. Pesticides contain a variety of toxic substances that cause damage to the human body while killing pests. At home and abroad, there are extremely strict restrictions on the amount of pesticide residues in tea, so the requirements for detection technology are becoming increasingly stringent. The rapid development of rapid detection methods for various pesticide residues in tea and tea products is particularly important. Waters' comprehensive solution for multi-residue detection from sample preparation to quantitative analysis of chromatographic mass spectrometry solves various problems that may be encountered during the analysis of pesticide residues in tea and other foods. This application note describes the QuEChERS extraction and SPE purification methods for multi-residue analysis of dry tea pesticides with the following advantages:
â– Rapid extraction of pesticide residues in dried tea using the QuEChERS method
â– Simple and fast dSPE purification of samples, UPLC-MS/MS analysis; reduced instrument maintenance time
â– SPE purification of acidic pesticide samples directly before UPLC-MS/MS analysis
â– SPE purification of samples directly before GC-MS/MS analysis can extend the life of the column and reduce the maintenance process required for the inlet
â– Using atmospheric piezoelectric separation in GC-MS/MS analysis applications
Foam cannon is necessary one of Car Wash Tools. For SGCB foam gun updated several generations, not matter design, pictures, or function, the effect will be better.
Here is one foam gun for small area foaming, this foam gun work with air hose reel :
Different adapters can be choosed here, like Karcher,Hitachi, Lavor, Gerni, Nilfisk . You can get one what you wanna.
If you wanna know more about it, pls contact with us.
foam cannons,fome cannon, auto detail supply,car wash chemicals,best car washing supplies,car cleaner supplies,snow foam,Foam Gun and Foam Cannon Kits
SGCB COMPANY LIMITED , https://www.sgcbautocare.com