VWR® Square Laboratory Bottles, Wide Neck, with GL80 Thread. Supplier: VWR International. Description: Made from borosilicate 33 expansion glass, these bottles are available in both Clear and Amber color formats. Certificates. ,75871-308CS,75871-306CS,75871-424CS,75871-304CS,75871-310CS,75871-426CS,75871-422CS.