chromatography & spectroscopy
CHROMATOGRAPHY VIALS & SEPTAS & CAPS In chromatography a wide variety of vials are used as sample containers. As they are mainly used by automatic instruments strict obedience of all dimensions is essential for trouble-free tests. Besides of these physical properties the vials have to fulfill requirements regarding inertness and cleanliness. chromatography vials Vials are either manufactured from glass or plastic. Glass vials are manufactured from 1st hydrolic glass tubings with low expansion coefficient. Hydrolic glass quality offers perfect resistance to all chemicals and higher hydrolic resistance.
Plastic vials are manufactured from polypropylene with a very good resistance to most of the chemicals and high hydrolic resistance.
septas & caps Sealing units for vials are combination of caps and septas. Caps can be offered either with slit or without slit. For problem-free and correct results seals should also be inert and uncontaminated. Almost all septa are laminated on one side with PTFE, which has a high chemical resistance and forms an inert barrier between the sample in the vial and the cap of the septa. vial packing Some vials (specially small size ones such as N8, N9 and N11) are packed in a polystyrene boxes. This kind of packing provides guarantees protection against dust and other enviromental effects. The glass clear polystyrene box makes the vials always clearly visible at all times.
vial cap without slit
vial cap with slit
cap packing Caps are usually packed in tamper-proof evident zip- locked bags. These bags allow easy identification of the content due to the transparent P.E material. The zip-lock enables resealing of the bag after used.
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