亚洲AV秘 片一区二区三3,97久久久久精品美女高潮喷水,亚洲AV噜噜狠狠麻豆,激情婷婷久久综合一区

  • <var id="sr55d"><track id="sr55d"><ins id="sr55d"></ins></track></var>
    <b id="sr55d"><p id="sr55d"></p></b><source id="sr55d"><mark id="sr55d"></mark></source>
  • <tt id="sr55d"><tbody id="sr55d"><bdo id="sr55d"></bdo></tbody></tt>
    <b id="sr55d"><acronym id="sr55d"></acronym></b>
      

    3. 

      <u id="sr55d"></u><samp id="sr55d"><td id="sr55d"></td></samp>
      <video id="sr55d"></video><u id="sr55d"><address id="sr55d"></address></u>
    4. 









      
    
      
        
    
      

      

      
    
      
        Products
        
      
    
      
    
    
      
        

        
      
            
      
                
      
                    YG815M type mask flame retardant performance tester
                
      
                
      
                    
                
      
                
      
                    
                        
      
                        
      【Scope of application】
      

      It is used to test the burning performance of medical masks after being exposed to flame at a certain linear velocity. It is a special testing instrument for the flame retardant performance of medical masks.
      

      【Guideline】
      

      YY 0469-2011, GB 2626-2006, GB 19083-2010
      

      【technical parameter】
      

      1. The distance of the movement line of the nose tip of the head mold is (60±5)m/s
      

      2. The flame height can be adjusted (adjusted at 4±mm when leaving the factory)
      

      3. The diameter of the flame temperature measuring probe is 1.5mm
      

      4. The flame is at (20+2)mm from the top of the burner, and the temperature is (800+50)℃
      

      5. The distance between the top of the burner and the lowest point of the mask is (20±2)mm
      

      6. The height adjustment range of the burner is 30mm
      

      7. The wall thickness of the metal head mold is 2-3mm, flame-resistant and burn-resistant
      

      8. Continuous burning time and smoldering time timer: 0~99.99 seconds, accuracy: ±0.1 seconds
      

      9. Power supply: AC220V, 5OH2, 50W
      

      10. Use gas: a can of propane gas
      

      11. Weight: about 30kg