Graduated Narrow Neck Bottles without caps, Kartell

Manufactured from polyethylene.
These are the ideal bottles for water and oils.
There are no shoulders to restrict the flow. The bottles are graduated so they can be used as rough measures.
The bottles can be secured by using shoulder and cap tag to avoid sample contamination during transit.
Conforms to DIN 13316 and 168. Suitable for foodstuff.
Refer here for Caps
Refer here for Wash bottle screw caps