Product Overview
Capacities run 10 to 50 ml for serums, lotions and SPF. The glass body shows the fill level; where the formula is photosensitive, specify the amber cartridge or a full bamboo sleeve. MOQ 1,000 units in standard finishes, 3,000 with engraving or colour matching.
Product Specifications
|
Parameter |
Details |
|
Construction |
Clear glass cartridge with rising piston; carbonized bamboo collar and cap; amber cartridge or full bamboo sleeve optional |
|
Pump engine |
PP engine with POM spring or all-plastic engine on request; PE/PP piston; silicone check valve |
|
Sealing performance |
Inverted 24 h at 40 C with no seepage; vacuum holding confirmed by negative-pressure leak test per production lot |
|
Light protection |
Glass body transmits light; photosensitive formulas specify amber cartridge or bamboo sleeve |
|
Lead time |
25-35 days after artwork approval |
|
MOQ |
1,000 units standard; 3,000 with engraving or colour matching |
How the Airless Actually Behaves
The pump does not suck. A spring-loaded piston pushes from below, so the product never passes through air - that is the whole point. Two limits follow. First, evacuation: standard engines recover 95-98% of fill; the remainder sits in the pump housing by design. Second, viscosity: the engine is specified for a window, roughly 3,000 to 50,000 cP depending on the model. Below the window, thin serums can seep past the piston seal in inverted storage and can drip from the orifice after dispensing - low viscosity is the hard case, not the easy one. Above it, thick creams need a wider-bore engine. Quote the viscosity of your formula and the engine is matched to it before tooling.
What the Vacuum Does and Does Not Block
Airless packaging blocks air, not light. The vacuum protects oxygen-sensitive actives - retinol, vitamin C, CoQ10 - from headspace oxidation and from re-aeration every time the cap comes off. But the cartridge on this page is clear glass: light passes through it as it would through any bottle. Where the formula is photosensitive, the options are an amber glass cartridge, a full bamboo sleeve, or an opaque coating on the cartridge. Do not buy this cylinder for UV protection and then wonder why the retinol turned orange.
Preservative-Free Is a Test, Not a Claim
An airless system lowers microbial exposure: no air ingress, no finger contact, no partially used bottle breathing between uses. That lets formulators run lower preservative loads - it does not remove the requirement. A preservative-free claim still has to pass a challenge test to ISO 11930 on the finished product in this exact package, because the pump orifice and valve are wet surfaces the formula touches on every dispense. Send the formula's preservative system and we confirm the material compatibility of the piston, valve and engine against it.
The Bamboo Parts
Bamboo on this cylinder is the collar and the cap. It is heat-treated (carbonized) - the process removes the sugars and starches fungi feed on, with no biocide added, which keeps the shell outside biocide regulations. What the treatment cannot fix is trapped moisture: the risk point is the crevice where bamboo meets glass, so the collar is seated on a sealed gasket and the cap vents rather than cups condensation. Store cartons at 45-60% relative humidity, away from heated walls; warp in transit comes from storage humidity, not from the formula.
B2B Industry FAQ
Q1: How does the pump handle thin serums and oils?
A: The engine is specified for a viscosity window, roughly 3,000 to 50,000 cP. Below the window, thin formulas can seep past the piston seal in inverted storage and may drip after dispensing, so low-viscosity serums are matched to a tighter engine before production. Quote your viscosity and we confirm the engine.
Q2: Will the bamboo mold or warp?
A: The bamboo is heat-treated with no biocide added, which removes what fungi feed on. The practical care points are sealing the collar-to-glass joint and storing cartons at 45-60% relative humidity. Warp comes from storage humidity, not from the formula inside.
Q3: What are the MOQs?
A: 1,000 units in standard sizes and finishes; 3,000 units with laser engraving or custom colour matching. Trial quantities are open to new brand launches on request.
Q4: Which regulations do the materials comply with?
A: Pump and piston components are declared under FDA food-contact regulations and EU 1935/2004 with the 10/2011 migration limits; glass and bamboo parts come with REACH documentation. Technical data sheets are provided for regulatory submission.
Q5: Does airless packaging protect my formula from light?
A: From air, yes; from light, no. The cartridge is clear glass. Photosensitive formulas should specify the amber cartridge or the full bamboo sleeve.
Q6: Can we go preservative-free in this package?
A: Airless lowers microbial exposure and allows lower preservative loads, but a preservative-free claim must pass a challenge test to ISO 11930 on the finished product in this package. We support the test and supply material compatibility data.
Q7: What is your leak standard?
A: Filled units are held inverted for 24 hours at 40 C with no seepage, and vacuum holding is confirmed by negative-pressure leak test per production lot. "Airtight" without a test method is not a specification we sell.
Q8: Is the cylinder refillable?
A: The glass cartridge can be removed and refilled where the closure design allows it; the piston is a wear part and is replaced on refill. Ask for the refill procedure sheet before building a refill program on this cylinder.
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