1.50ml empty tube
2.QuEChERS Extraction Salts
Hawach extraction salts pack carry a pre-weighed anhydrous extract salt, wherein anhydrous magnesium sulfate is used to remove water from the sample matrix, and other buffer salts are used to provide a suitable pH to ensure some alkali-sensitive pesticides good recovery rate. When a sample with relatively high water content is encountered, the buffer salt will react exothermically with water, thereby affecting the recovery rate. Hawach offers separate extraction salt packs, users can add buffer salts after adding organic solvents.