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GL18 White Integrated Rim Dropper

Name: GL18 White Integrated Rim Dropper - BlueSky Solutions
SKU: GL18W-IRD

GL18 white integrated rim dropper in PP/PELD. Fits all GL18 glass dropper bottles 5ml–100ml. 45° tilt operation. Ideal for essential oils, cosmetic serums and general dispensing applications.

MOQ and lead time applies – Please contact us for further details

The GL18 White Integrated Rim Dropper (GL18W-IRD) is a general-purpose dispensing insert manufactured in PP/PELD, designed to fit within the GL18 closure system used across BlueSky’s full range of glass dropper bottles. Unlike the vertical dropper — which requires full bottle inversion to 180° and is optimised for high-precision pharmaceutical dosing — the rim dropper operates at a 45° bottle tilt, allowing liquid to flow through the dropper insert by gravity without fully inverting the bottle. This makes it a practical, user-friendly dispensing format for everyday consumer applications where approximate drop delivery is sufficient and ease of use is a priority. It is well suited to essential oils, aromatherapy blends, cosmetic facial serums, CBD oils, mouthwash, and topical personal care formulations where consumers expect controlled yet effortless dispensing rather than precise dose measurement.

The rim dropper is an integrated accessory that sits within the GL18 cap, working in combination with BlueSky’s full range of GL18 closures — Basic Screw, OVII, OVIII, and CRC — across all bottle volumes from 5ml to 100ml. Because the GL18 standard (also known as NW18 or DIN168) maintains a consistent inner bore diameter of 10.65mm ± 0.15mm across all bottle volumes, the rim dropper specification is fully interchangeable across the entire GL18 bottle range without modification. The rim dropper is not recommended for applications requiring precise dose control, such as pharmaceutical oral drops or paediatric dosing solutions — for those applications, the GL18 Integrated Vertical Dropper (GL18W-IVD) is the appropriate choice. Contact BlueSky to confirm stock availability, MOQ, and accessory combination options.

Additional information

Material	PP/PELD
Neck size	GL18

45° Tilt Operation — Easy Consumer Dispensing

The rim dropper operates at a 45° bottle tilt, allowing liquid to flow through the dropper insert without the bottle needing to be fully inverted. This makes it intuitive and comfortable for everyday consumer use — particularly for personal care products applied topically, where the user tilts the bottle toward the application area and delivers drops directly. The rim dropper’s operating angle makes it well suited to bedside, bathroom, and on-the-go use where controlled dispensing without full inversion is preferred.

General Dispensing Format — Cosmetics & Personal Care

The rim dropper is the appropriate dispensing format for cosmetic serums, facial oils, essential oil blends, CBD oils, aromatherapy formulations, mouthwash, and topical personal care applications where drop delivery is controlled but not required to meet pharmacopoeial dosing standards. Drop size is determined by bottle tilt angle, flow rate, and formulation viscosity — variability is inherently higher than a vertical dropper, which is acceptable for general consumer dispensing but not for regulated pharmaceutical applications.

PP/PELD Construction — Broad Chemical Compatibility

Manufactured in PP (polypropylene) and PELD (low-density polyethylene), the GL18W-IRD offers broad chemical compatibility with cosmetic and personal care formulations including aqueous solutions, light oils, essential oil blends, alcohol-based preparations, and serums. As with all dispensing accessories, formulation compatibility testing is recommended prior to production — particularly for high-concentration essential oils or solvent-based formulations where material interaction is a consideration.

Universal GL18 Compatibility — All Cap Types, All Bottle Sizes

The GL18W-IRD is compatible with all four GL18 cap shapes available from BlueSky — Basic Screw, OVII (integral tamper-evident ring), OVIII (assembled tamper-evident ring), and CRC (child-resistant, ISO 8317) — and with all GL18 glass dropper bottle volumes from 5ml to 100ml in both amber and clear glass. The GL18 neck standard is consistent across all bottle volumes, so the rim dropper specification does not change when bottle size or closure type changes.

Amber & Clear Glass Compatible — Including UV-Sensitive Formulations

The GL18W-IRD is compatible with both amber and clear GL18 glass dropper bottles. For light-sensitive formulations — including essential oils, CBD preparations, vitamin C serums, and retinol treatments — amber glass provides UV protection that preserves formulation integrity over the product’s shelf life. For formulations where product visibility is commercially important, clear glass is available. The choice of glass colour does not affect dropper specification or performance.

Accessible Entry Point in the GL18 Dispensing System

Within the GL18 system, the rim dropper is the most straightforward and widely used dispensing insert for cosmetic and personal care applications. It requires no formulation specification data to select — unlike the vertical dropper, which requires viscosity, surface tension, density, and target dose weight to determine the correct geometry. This makes it a practical first choice for brands entering the GL18 system with cosmetic or wellness formulations that do not require regulated dosing precision.

Essential oils and aromatherapy blends
Facial serums and skin oils
CBS and botanical oils
Vitamin C and antioxidant serums
Hyaluronic Acid and Retinol treatments
Scalp and hair treatments
Topical antiseptics
Cosmetic eye and lip serums

Delivery & Returns

Orders for products in our ‘In Stock’ ranges will normally be delivered within two working days. Our product ranges labelled as ‘Product MOQ Applicable’ may be subject to a lead time which will be confirmed to you when we receive your order. For information relating to delivery charges, please refer to the ‘Is there a carriage charge?’ section in our FAQs page.

In some instances, goods can be returned. Please view our full refunds policy in our terms and conditions here: Terms & Conditions.

Core Product Range

We endeavour to hold continuous stock of this product. We expect to stock these ranges for a significant period of time in the future. This ensures you can build ranges around them and rely on their availability both now and in the coming years.

In Stock

We hold these products in our UK warehouses for you and they are available for rapid delivery.

Product MOQ Applicable

These products are not currently available from our UK held stock. However, we can supply you from our flexible and solid, global supply chain. Please note that there are minimum order quantities (MOQs) associated with this product, and lead times may vary depending on the quantity ordered. For more information on MOQs and lead times, please contact: sales@blueskysolutionsuk.com

Additionally, we can create bespoke products for you whether through colour, decoration, or bespoke tooling - to your specification. Our team of product experts will work with you to understand your requirements and place the necessary orders.

Frequently Asked
Questions

What is the difference between a rim dropper and a vertical dropper?

A rim dropper operates at a 45° bottle tilt, delivering drops with general variability suitable for everyday consumer dispensing. It is designed for cosmetic and personal care applications where approximate drop delivery is acceptable. A vertical dropper requires the bottle to be fully inverted to 180° and delivers drops with ±10% precision from the target dose weight, in line with European Pharmacopoeia monograph 0672. The vertical dropper is the appropriate choice for pharmaceutical oral drops, vitamin formulations, and regulated products where precise dosing is a clinical or regulatory requirement.

Which GL18 caps and bottle sizes is this dropper compatible with?

The GL18W-IRD is compatible with all four GL18 cap shapes available from BlueSky — Basic Screw, OVII (integral tamper-evident ring), OVIII (assembled tamper-evident ring), and CRC (child-resistant, ISO 8317 certified). It fits all GL18 glass dropper bottle volumes: 5ml, 10ml, 15ml, 20ml, 30ml, 50ml, and 100ml, in both amber and clear glass. The GL18 neck standard is consistent across all these bottles, so the rim dropper specification does not change with bottle size.

Do I need to provide formulation data to specify this dropper?

No — unlike the vertical dropper, the rim dropper does not require formulation-specific geometric specification. It is a general-purpose dispensing insert suitable for a wide range of cosmetic and personal care liquid viscosities. If your formulation is unusually high in viscosity or contains aggressive solvents, please contact BlueSky’s team to discuss suitability and confirm material compatibility before ordering.

Is the rim dropper suitable for pharmaceutical oral drops?

No. The rim dropper is a general dispensing format and is not designed to meet the dosing precision requirements of pharmaceutical oral drops, which require ±10% accuracy from the target dose weight in line with European Pharmacopoeia monograph 0672. For pharmaceutical oral drops, tinctures, vitamin formulations, and other regulated dosing applications, the GL18 Integrated Vertical Dropper (GL18W-IVD) is the appropriate choice. Please contact BlueSky’s team to discuss the correct specification for your application.

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GL18 White Integrated Rim Dropper

Additional information

45° Tilt Operation — Easy Consumer Dispensing

General Dispensing Format — Cosmetics & Personal Care

PP/PELD Construction — Broad Chemical Compatibility

Universal GL18 Compatibility — All Cap Types, All Bottle Sizes

Amber & Clear Glass Compatible — Including UV-Sensitive Formulations

Accessible Entry Point in the GL18 Dispensing System

Delivery & Returns

Frequently Asked
Questions

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GL18 White Integrated Rim Dropper

Additional information

45° Tilt Operation — Easy Consumer Dispensing

General Dispensing Format — Cosmetics & Personal Care

PP/PELD Construction — Broad Chemical Compatibility

Universal GL18 Compatibility — All Cap Types, All Bottle Sizes

Amber & Clear Glass Compatible — Including UV-Sensitive Formulations

Accessible Entry Point in the GL18 Dispensing System

Delivery & Returns

Frequently Asked Questions

Ready to discuss this product?

What our customers say

Download our

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Frequently Asked
Questions

Ready to discuss
this product?