1.Weight: 2Kg, 3Kg, 5kg, 7Kg, 9Kg, 10kg; 24kg

2.Carbon dioxide extinguishers do not have pressure gauges because carbon dioxide is a condensable gas. CO2 (carbon dioxide) extinguishers are for class B and C fires. They don't work very well on class A fires because the material usually reignites. CO2 extinguishers have an advantage over dry chemical in that they leave behind no harmful residue.That makes carbon dioxide (or Halotron I or FE-36; see below) a good choice for an electrical fire involving a computer or other delicate instrument. CO2 extinguishers are not approved for class D fires!