GL18 White Tamper-Evident Closure with Integrated Syringe Plug

The GL18 White Tamper-Evident Closure with Integrated Syringe Plug (GL18TEW-ISP) combines first-open tamper evidence with a syringe-compatible plug insert in a single GL18 cap assembly, manufactured in PEHD and PELD. The integral tamper-evident ring — moulded as part of the PEHD cap body — provides visible first-open evidence confirming the product has not been accessed prior to purchase, while the PELD syringe plug insert enables the user to withdraw a precise measured volume of liquid using an oral dosing syringe inserted directly through the plug. This combination makes the GL18TEW-ISP the appropriate closure for retail oral liquid medicines, vitamin and mineral liquid supplements, oral tinctures, and healthcare preparations where both syringe-based volumetric dosing and consumer-facing tamper evidence are required simultaneously — and where child-resistant packaging is not a mandatory regulatory requirement for the product category.

Syringe-withdrawal dosing delivers a higher degree of volumetric accuracy than drop counting, as the user draws an exact volume directly into the barrel of a calibrated oral syringe rather than estimating dose by drop number. The self-sealing PELD plug flexes to admit the syringe tip on insertion and reseals on withdrawal, maintaining closure integrity between doses. As part of the GL18 system (also known as NW18 or DIN168), the GL18TEW-ISP is fully interchangeable across all GL18 glass dropper bottles in the BlueSky range — 5ml to 100ml, in both amber and clear glass. Please note that a separate tamper-evident syringe plug closure is available in PP/PELD material (GL18TEWPP-ISP) — contact BlueSky’s team to confirm which material specification is most appropriate for your formulation and filling process. Contact BlueSky to confirm stock availability, MOQ, TE ring type, and syringe compatibility before specifying.