The spiral headspace series of bottle caps combines innovation with time-saving and convenience It can avoid excessive evaporation and keep the sample bottle well sealed. The unique screw thread design ensures consistent sealing. The bottleneck is processed accurately and it is easy for mechanical arms to operate. The strict quality ensures size consistence from batch to batch.The professional precision screw thread make septa and vial better sealed, it is simple to operate without using tools. It can be directly screwed down by hand. It is used for standard GC and HPLC sample bottles. It is also used for auto sampler and sample storage. The flat bottle has a large contact area with the pad and a tighter seal when the auto sampler moves down. The septa is made of PTFE and silicone and it ensures excellent functionality. It is especially suitable for gas chromatography and it will make sure that the septa will not fall into the headspace bottle when injecting the sample.

Name	20mm 20ml crimp top clear headspace vial flat bottom with aluminum caps
Classification	Laboratory Bottle
Brand Name	HAMAG
Model Number	HM-0837
Place of Origin	China,Zhejiang
Material	Borosilicate Glass, aluminum, Silicone/PTFE
Color	Clear
Volume	20ml
Closure Size	20 mm
Size	OD22.5*75mm
Cap	opened top/Headspaced cap
Customized support	OEM, ODM, OBM
Sales support	Free sample

- Caps septa, different color of caps. optional. - Clear or Customized Logo. optional. - Available as open crimp top seals or with centre hole. - Nature PTFE/nature Silicone septa - Made from advanced technology and excellent raw materials. - Could assembled with cap and septa , use them instantly to save your time. - Precise bottle neck size, ensure handle correctly. - Strict quality control to ensure size consistency from batch to batch. - Caps are lined with PTFE/silicone for excellent sealing and chemical resistance. - Caps are manufactured of high quality materials to eliminate sample contamination. Application: medical care&public health , environmental protection, food stuff, chemical industry, biological industry