Amidites are sold in Septum
Top Bottles as well as screw cap bottles. The standard septum
top bottles are 13 mm septum. The screw top bottles can be 20mm
or 24mm.
We have designed a cap that can accommodate the 13 mm septum
cap bottles, the 20mm screw cap bottles and the 24 mm screw cap
bottles.
The traditional clip caps that are used on most ABI Oligo
Synthesizers that take the 13 mm septum cap bottles use an
O-Ring to seal on the inside of the bottle neck. These bottles
also have a seam just below the top on the inside of the neck
which can interfere with sealing. Our design uses an O-Ring but
it is placed further down inside the bottle neck so it is not
sealing on the seam. We also have a top seal that seals the top
of the bottle. Therefore there are 2 seals to make sure that all
bottles will seal.