neoLab ND20 Headspace vials, 20 ml, brown glass, 75.5 x 23 mm, for Perkin Elmer, Tekmar, rounded bottom, 100 pcs/pack | 7-0797

The instruments on the market require a large variety of vials.
All vials are made from glass of the 1. hydrolytical class.

Headspace vials are different in the following features:

• volume
• rounded or flat bottom
  A rounded bottom is more solid during tempering at high inside pressure. The bottle furthermore slides into the heating block easier, if it is inserted by the use of magnets.
  A flat bottom can be needed, if the vials have to run down slightly in the device.
• bevelled headspace rim
• a bevelled headspace rim can be required for some special closure systems (Perkin Elmer)
• neck length (depending on the device)
• clear/brown glass
• with/without labeling field and filling mark