5ml Round Bottom Child Resistant Jar with Black Lids
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Volume: 5ml (approximately 0.17 oz) per jar.
Shape: Round bottom design for complete product recovery without waste.
Child-Resistant Certification: Push-and-turn black lid meets ASTM D3475 standards.
Material: Borosilicate glass, approximately 2-3mm walls.
Lid: Black plastic child-resistant lid with food-safe silicone or foam gasket liner.
Best For: Sample storage, craft supplies, potent concentrates, jewelry components, specialty ingredients where every last bit counts.
The round bottom eliminates dead space where product gets trapped at the corners and edges. Borosilicate glass keeps contents fresh and visible, and the ASTM D3475-certified push-and-turn lid keeps contents secure from children while remaining functional for adults.
What's Included
- One 5ml borosilicate glass jar with round bottom
- One black child-resistant lid with gasket liner
- Ready to use - no assembly
Key Features
- Round bottom design: Curved walls let users recover every last bit through simple scraping or natural flow.
- ASTM D3475 child-resistant: Two-motion push-and-turn lid certified for child safety compliance.
- 5ml (0.17oz) capacity: Perfect for 1-gram samples, specialty extracts, or small batch tests.
- Borosilicate glass: Chemically inert, won't degrade contents, thermally stable.
- Airtight gasket seal: Keeps contents fresh and odor-sealed for extended storage.
- Crystal-clear visibility: See what's inside without opening, ideal for quick identification or retail display.
Applications and Use Cases
Concentrate makers use round-bottom jars to minimize waste on high-value extracts. Diamond painters store bulk drill separations by color, trusting the shape to help retrieve every single bead. Jewelry makers keep tiny clasps and findings organized without losing pieces in corners. Small-batch candy makers package samples of specialty infusions. Artists testing small quantities of pigments or mica benefit from the round bottom that prevents product settling in hard-to-reach corners.
How to Use
- Rinse and dry the jar and lid thoroughly before first use.
- Fill the jar to just below the rim, leaving minimal headspace.
- Wipe the jar's rim clean with a lint-free cloth to ensure a tight seal.
- Press the lid down firmly, then twist clockwise until you feel slight resistance.
- To recover product, tilt and gently scrape the curved bottom or allow thicker contents to flow naturally to the opening.
- Store the jar upright in a cool, dry location away from direct sunlight.
Specifications
| Specification | Details |
|---|---|
| Volume | 5ml (0.17 oz) |
| Shape | Round bottom |
| Dimensions | Approximately 1.25" diameter x 1.5" height |
| Glass Type | Borosilicate (chemical and thermal resistant) |
| Wall Thickness | 2-3mm borosilicate glass |
| Lid Type | Black plastic, ASTM D3475 child-resistant |
| Liner Material | Food-safe silicone or foam gasket |
| Weight (empty) | Approximately 20g |
| Dishwasher Safe | Yes (glass only; hand-wash lid) |
| Heat Rating | Glass rated to 400°F (204°C); lid not for oven |
| Certifications | ASTM D3475 child-resistant, food-safe borosilicate glass |
The 5ml Round Bottom Child Resistant Jar measures approximately 1.25" diameter by 1.5" height, is made from borosilicate glass with 2-3mm walls, and includes a black ASTM D3475-certified child-resistant lid with a food-safe gasket. The round bottom design minimizes product waste.
Compared to Alternatives
Flat-bottom jars waste product in corners and edges, especially frustrating for high-value concentrates. Plastic containers cost less but degrade with time and solvents. Standard glass vials without child-resistant lids don't meet regulatory requirements for child safety. The round bottom sets these apart from standard sample jars, particularly for industries where every gram counts.
Frequently Asked Questions
Why does the round bottom matter at 5ml?
At this size, product settling in flat corners means wasted material or frustrated customers. The curved bottom lets gravity and simple scraping recover everything.
Is this jar truly child-resistant?
Yes. The lid includes an ASTM D3475-certified child-resistant mechanism, not a standard screw cap. It requires two distinct motions to open and is tested to resist opening by children under 45kg.
Can these be used for food storage?
Absolutely. Borosilicate glass is food-safe and doesn't leach. The airtight seal works well for spices, extracts, honey, or specialty ingredients. Hand-wash after use.
What's the difference between round-bottom and flat-bottom 5ml jars?
Round-bottom jars let you recover product from the curved surface through scraping or tilt-and-pour. Flat-bottom jars have corners where product gets stuck. Choose round-bottom if product recovery matters.
Will the gasket seal fail with frequent opening?
The gasket is durable for 100+ cycles. Most users report effective sealing for 6-12 months of regular use before replacement becomes necessary. Replacement lids are inexpensive.
Can I sterilize these jars?
Yes. The glass can be boiled or autoclaved. The plastic lid should be hand-washed, not sterilized at high heat. Allow both to cool completely before resealing.
Care and Storage
It's simple: we'd suggest a quick rinse with warm water and mild soap. You're set for years if you don't let residue build up.
Rinse the jar with warm water before first use and air-dry completely. After filling, ensure the rim is clean and dry before capping. Hand-wash the lid and gasket with mild soap, then air-dry. Store jars upright in a cool, dark place. Avoid storing near windows or heat sources, as sunlight and warmth can degrade the gasket liner over time.
Shipping and Returns
Orders ship within 1-2 business days from our Wisconsin warehouse. 30-day returns on unopened items. If a jar arrives chipped or with a defective lid, contact us for replacement.
Related Collections
Explore other jar sizes in our Glass Jars by Size collection, including 3ml, 9ml, and larger options. For diamond painters and craft makers, see our Diamond Painting Accessories. Browse Craft Supplies for additional storage and organization solutions.
