18mm 18-400 Black Child Resistant Calibrated Glass Dropper for 1/2 oz Bottles | CRC Graduated Dropper Supplier
Product Overview

This 18mm 18-400 black child resistant calibrated glass dropper is designed for 1/2 oz Boston round bottles, providing a safe, compliant, and precision dosing solution for CBD oil, cannabis extracts, essential oils, and pharmaceutical liquids.

As a professional calibrated glass dropper supplier, we offer reliable bulk production with consistent quality, ensuring compatibility with industry-standard bottles and meeting the requirements of regulated markets.

Featuring a secure child-resistant (CRC) closure and graduated measurement markings, this dropper allows for controlled, repeatable dosing while helping prevent unintended access.

Key Features
Child Resistant Closure (CRC) for Compliance
Push-down-and-turn mechanism helps meet safety requirements for cannabis and CBD packaging
Calibrated Glass Pipette for Precise Measurement
Graduation marks enable accurate and repeatable dosing
66 mm High-Quality Glass Pipette
Ensures smooth and controlled liquid dispensing
Durable PP Cap Construction
Chemical-resistant polypropylene closure for long-term reliability
Compatible with 18-400 Boston Bottles
Designed for 1/2 oz Boston round bottles with industry-standard neck finish
Bulk Supply with Consistent Quality
Ideal for brands and distributors requiring stable large-volume production
Premium Black Finish for Professional Presentation
Enhances shelf appeal and brand image
Specifications
Neck Finish: 18-400
Size: 18mm
Cap Material: Polypropylene (PP)
Pipette Material: Glass (Calibrated)
Bulb Material: Rubber
Pipette Length: 66 mm
Color: Black
Maximum Dispensing Volume: Approx. 0.75 ml (water-based liquid)
Bottle Compatibility: 1/2 oz Boston round bottles
Applications

This calibrated child resistant glass dropper is widely used for:

CBD oil and cannabis extracts
Essential oils
Pharmaceutical liquids
Skincare serums
Chemical solutions
Important Notes
Graduation Durability
Products containing ethyl alcohol or highly concentrated essential oils may gradually affect or remove printed graduation markings. Compatibility testing is recommended.
Calibration Standard
Graduation marks are based on water-based liquid testing. Actual dispensing volume may vary depending on liquid viscosity and composition.
Why Choose Us
25+ years of packaging manufacturing experience
Integrated plastic + glass supply chain
In-house mold development and customization
Stable bulk production with reliable lead times
Trusted supplier for cannabis and CBD packaging
FAQ

Q1: Does this dropper fit standard 18-400 bottles?
Yes, it is fully compatible with standard 18-400 Boston round bottles.

Q2: Are the graduation marks accurate for all liquids?
The markings are calibrated based on water. Viscous or oil-based liquids may vary slightly.

Q3: Will alcohol or essential oils affect the markings?
Yes, high concentrations of alcohol or certain essential oils may fade the printed graduation marks over time.

Q4: Do you offer bulk or wholesale supply?
Yes, we specialize in bulk and wholesale orders. Please contact us for pricing and samples.