Glass Droppers

These glass droppers are the closure component — the rubber bulb and glass pipette assembly that turns your bottle into a precision dispensing tool. Each dropper ships wholesale, sold by the box, and fits Boston Round bottles in sizes from 0.5 oz up to 4 oz. You'll find standard droppers, child-resistant droppers, and graduated glass pipette options across four finishes: black, white, gold, and silver. Whether you're filling tincture bottles for a CBD brand, assembling skincare kits for a private label line, or sourcing closures to go with an existing bottle order, this is the page for that.

Pair these droppers with our glass dropper bottles for a complete, ready-to-fill setup, or browse compatible caps and closures to round out your packaging line. Need to test a fit before committing to a full box? Check our samples collection.

What the Dropper Assembly Consists Of

Every glass dropper here is a two-part assembly: a rubber bulb on top and a glass pipette stem below. Squeeze the bulb, insert the pipette into your liquid, release — the pipette draws up a controlled amount and holds it. Squeeze again to dispense drop by drop. It's an old mechanism, but it's still the most accurate way to deliver small volumes of liquid without waste. The glass pipette is inert — it won't react with essential oils, tinctures, serums, or herbal extracts the way plastic can over time. That matters when your product is potent or has a long shelf life. The rubber bulb provides the suction; the pipette controls where it goes. Together, the dropper and pipette form a complete dispensing system designed for daily use by your end customer.

Neck Finish and Bottle Compatibility

These glass droppers are sized by neck finish — 18-400, 20-400, and 22-400 — which tells you both the thread diameter and the thread count. The 18-400 fits our 0.5 oz Boston Round bottles. The 20-400 covers the 1 oz and 2 oz Boston Rounds, which are the most common sizes for tinctures and serums. The 22-400 fits the 4 oz Boston Round. If you're not sure which finish your bottle uses, check the product title — every listing on this page states the compatible bottle size in the name. Child-resistant versions are available in black and white at the 20-400 and 22-400 sizes, with the same rubber bulb and glass pipette construction and an added squeeze-and-turn mechanism for regulatory compliance. These are a common requirement for CBD tinctures, herbal supplements, and pharmaceutical applications.

Why Glass Pipette Over Plastic

Glass is chemically inert. Plastic isn't — certain oils, solvents, and concentrated extracts will leach microplastics or absorb into the pipette wall over time, altering the product and potentially contaminating it. That's not a theoretical concern; it's a well-documented problem in pharmaceutical and cosmetic packaging. A glass pipette eliminates it. Glass also holds its shape indefinitely — no warping, no cracking, no gradual compression loss. And because glass is transparent, your customer can see exactly how much product they've drawn up, which matters for dosing accuracy with tinctures, eye drops, and any product sold with a measured dose in mind. For brands positioning themselves in the premium or wellness tier, glass pipettes also signal quality in a way that plastic dropper assemblies don't.

Who Uses Glass Droppers

• CBD and tincture brands — amber and clear bottle pairings with CRC droppers for compliance
• Skincare and serum formulators — clean application of facial oils, vitamin C serums, hyaluronic treatments
• Essential oil producers — aromatherapy, blending, and resale in 0.5–2 oz formats
• Herbal supplement makers — liquid extracts, herbal tinctures, flower remedies
• Pharmaceutical and homeopathic packagers — precise dosing with child-resistant or graduated pipette options
• Private label brands — black or gold droppers for luxury packaging aesthetics
• DIY and small-batch makers — sourcing a single box to test fit before scaling
• Lab and diagnostic applications — glass pipette assemblies for controlled liquid transfer

Frequently Asked Questions

What sizes do these glass droppers come in?
The droppers are sized by neck finish to match specific bottle sizes: 18-400 for 0.5 oz Boston Round bottles, 20-400 for 1 oz and 2 oz, and 22-400 for 4 oz. Each product listing states the compatible bottle size directly in the title, so you don't need to calculate the fit yourself. If you're unsure, the samples collection lets you test a fit before committing to a full box order.

What colors are available?
Droppers are available in black, white, gold, and silver finishes. Black and white are available across all sizes and include both standard and child-resistant versions. Gold and silver are available in standard (non-CRC) versions across 0.5 oz, 1 oz, 2 oz, and 4 oz sizes. The gold and silver finishes are a popular choice for luxury skincare and private label cosmetic packaging.

What's the difference between a standard dropper and a child-resistant dropper?
Standard droppers open and dispense with a simple squeeze of the rubber bulb — no additional action required. Child-resistant (CRC) droppers use a squeeze-and-turn mechanism that prevents children from opening the bottle without deliberate effort. CRC droppers are commonly required for CBD tinctures, herbal supplements, and certain pharmaceutical products. Both versions use the same rubber bulb and glass pipette construction.

What are these droppers made of?
The pipette stem is glass — clear, inert, and non-reactive with oils, extracts, and tinctures. The bulb is rubber, which provides the suction needed to draw liquid up the pipette. The cap collar is polypropylene plastic in the standard finishes, with metallic-finish options (gold, silver) using a coated closure top. The glass pipette is the key component — it's what separates these dropper assemblies from all-plastic alternatives.

How many droppers come per box?
Box quantities vary by size. The 0.5 oz (18-400) droppers come 600 per box. The 1 oz (20-400) come 400 per box. The 2 oz (20-400) come 300 per box. And the 4 oz (22-400) come 150 per box. There's also a 24-pack retail option available in black and white for the 0.5 oz size — useful if you're testing a small run or working through samples before placing a bulk order.

Do these droppers fit bottles from other suppliers?
They're sized to fit standard Boston Round bottles with 18-400, 20-400, and 22-400 neck finishes — a common standard across the industry. That said, thread tolerances can vary slightly between manufacturers, so we always recommend testing fit with your specific bottle before ordering a full box. Our samples make that easy. If your bottle came from our glass bottles collection, the fit is guaranteed by neck finish match.

How fast will my order ship?
The Bottle Depot ships USA orders in 3–5 days. We've served over 5,000 customers since 2018 and stand behind every order with a satisfaction guarantee. If something's wrong with your order, we'll make it right. For custom label options to go with your dropper bottles, see our custom bottle labels collection.