ALU Plus Droppers: Planning Your Size, Colour and Teat Range

The ALU Plus range is built around one neck finish, DIN18 (GL18), and a small set of choices: collar colour, teat colour and bottle size. That simplicity is useful, but it also means a product line can quickly grow into a matrix of 28 variants. This article shows how the range is structured and how to plan it so your orders, your filling line and your shelf all stay consistent.

How the ALU Plus range is organized

Every assembled dropper in the Kvapkadlá “ALU Plus” category shares the same build:

• DIN18 (GL18) thread for DIN18 dropper bottles
• Aluminium collar with a polypropylene (PP) inner part, decorated with 2 silver rings
• Mešiček z NBR gumy
• Straight-tip glass pipette, cut to a length that matches the bottle volume

Product titles in the shop use the name “ALU Premium” for the individual items, while the category and sub-categories are called ALU Plus. They are the same range, so search for either name.

The four sub-ranges are defined by two choices:

• Gold or Silver: the colour of the aluminium collar.
• Day or Night: the teat colour. Day has a white teat, Night has a black teat.

That gives four sub-categories: ALU Plus Gold Day, Gold Night, Silver Day and Silver Night. Each comes in seven sizes: 5, 10, 15, 20, 30, 50 and 100 ml.

Size and pipette length at a glance

The pipette length changes with the bottle volume. These are the combinations in the range:

These lengths are matched to the stated bottle volumes. Bottle height varies between suppliers and shapes, so always test a sample on your own bottle. A pipette that is too long can touch the bottle shoulder or bottom. One that is too short leaves product behind. Our article on fľaštičkami s kvapkadlom DIN18 is a good starting point for matching bottle and dropper.

Step 1: Decide what the collar colour says about the product

Gold and silver collars are a branding choice, not a technical one. The construction is the same. Brands tend to use them in a few common ways:

• Strieborná: often used for clean, neutral or clinical-looking lines, such as serums, hydrosols or supplement drops.
• Zlatá: often used for premium or “luxury” positioning, such as facial oils, beard oils or fragrance oils.

Look at your label colours and any foil or hot-stamping. A gold collar next to a silver foil label can look unintentional. Check the collar next to the real label before you commit to a full carton order.

Step 2: Use the teat colour to sort your line

White and black teats are an easy visual code. Some brands use a white teat for daytime products and a black teat for evening or night products. The Day and Night names in the range are a hint at this idea, but you can use the colours any way you like.

Other options for teat colour:

• Black teats hide stains better when you use dark or coloured oils.
• White teats can show oil residue or discoloration over time. This matters mainly for products with strong pigments.
• Using both colours in a single product family helps staff and customers tell variants apart, for example a day serum and a night serum.

For more on teat materials and properties, see our guide on gumové koncovky in the parts category. All ALU Plus droppers use NBR rubber teats, so check your formula for compatibility. Essential oils and solvent-heavy liquids can affect rubber over time. Run a compatibility test with your own formula and teat before scaling up.

Step 3: Choose sizes by use, not just by shelf space

The seven sizes serve different jobs:

• 5 and 10 ml: samples, travel formats, trial sizes and concentrated products dosed in a few drops.
• 15 and 20 ml: common for serums and oils sold as a standard retail unit.
• 30 ml: the typical “hero” size for many cosmetic and supplement oils. For example, the 30 ml Gold Day dropper uses a 77 mm pipette.
• 50 and 100 ml: value sizes, refills and products used in larger amounts. See the 50 ml Silver Night dropper for an example.

A smaller set of sizes is easier to manage. Many brands do well with three: a sample size, a main size and a large size. Every extra size adds another SKU to stock, another carton to store and another change-over on the filling line.

Step 4: Count the variants before you order

A simple calculation shows how quickly numbers grow. If you use two bottle sizes, two collar colours and two teat colours, you need eight different assembled droppers. With three sizes and all four sub-ranges, it is twelve.

Before ordering, write down:

1. The product, its bottle size and the matching pipette length.
2. The collar colour (gold or silver).
3. The teat colour (white or black).
4. The quantity per carton and the number of cartons you need.
5. The expected consumption over the next few months.

Because the items are sold by the carton, round your forecast to full cartons. Order the main sizes first and add the rest once sell-through is clear. Lead time is typically 3 to 5 working days from payment, which makes smaller, more frequent orders workable.

Filling line and assembly notes

The droppers arrive ready assembled, so there is no need to combine teat, collar and pipette yourself. That saves a step and reduces the number of parts to inspect. A few practical points still apply:

• Fill the bottle first, then insert the dropper and tighten the collar. Avoid dipping the pipette into a product before the closing step.
• Apply consistent torque. Aluminium collars with a PP inner part can be scratched by hard gripping tools. Use a capping tool with a soft grip or a machine set to a tested torque. Our guide to baliace stroje covers capping options.
• Keep cartons closed until use to keep dust and fingerprints off the collars.
• Inspect a sample from each carton for pipette cracks, collar scratches and teat fit.

Common mistakes with ALU Plus orders

• Mixing up Day and Night. Check the teat colour in the product title.
• Ordering a 30 ml dropper for a 30 ml bottle that is taller than normal, without testing the pipette length.
• Skipping a stability test with the NBR teat and your formula.
• Choosing a collar colour from a screen image only. Colours look different in daylight and under store lighting.
• Ordering all variants at once, then finding that two of them barely sell.

Časté otázky

What do Day and Night mean in the ALU Plus range?

Day means a white NBR teat and Night means a black NBR teat. The collar, thread and pipette construction are the same for both.

Which neck finish do ALU Plus droppers fit?

All of them have a DIN18 (GL18) thread and fit DIN18 bottles. Check the thread and bottle neck with a sample before you place a large order.

Are the droppers sold assembled?

Yes. Teat, aluminium collar and glass pipette come ready assembled. If you need a different combination, see the individual parts in our parts and components category.

Môžem si najskôr objednať vzorky?

Yes. Samples are a sensible way to check collar colour, pipette length and teat compatibility with your formula and bottle. Contact us with your requirements.

Ready to build your range? Prezrite si obchod for ALU Plus droppers in all sizes, or ask us for samples and advice on matching a dropper to your bottle.