1.Material: 304 stainless steel. It is resistant to high temperature, acid, 
alkali and corrosion.
  2. Range of motion: freely telescoping up and down within 400 mm and 
arbitrary positioning.
  3. Structure: Complete set of equipment includes stainless steel gas 
collector, stainless steel duct with manual adjustment, etc.
  4. Gas collecting hood: Made of 1.0 mm thick 304 stainless steel plate by 
bending and stamping.
  5. Air duct: Manual adjustable air value is set under the air duct. The 
adjustable range is 0-90°; air outlet is φ158;
  6. The distance between the device and the experimental instrument can be 
adjusted as needed. The bracket for the installation of the atomic absorption 
hood is fixed on the roof ceiling and connected with PVC exhaust pipe. The 
standard specification is 500*500*1300, and the special specifications can be 
customized.