Product Overview
Clear Glass Test Tubes are transparent glass tubes for experiments where sample color, liquid level, sediment, layering, or reaction progress must be easy to see. They are used for color-reaction checks, reagent handling, concentration observation, and teaching demonstrations where visual clarity is the main reason for choosing the tube.
Specifications
|
Item |
Details |
|
Product Name |
Clear Glass Test Tubes |
|
Material |
High-transparency lead-free, arsenic-free Borosilicate 3.3 glass |
|
Standard Sizes |
10×70mm, 12×75mm, 15×100mm, 18×150mm |
|
Capacity Range |
3ml, 5ml, 10ml, 15ml |
|
Wall Thickness |
0.7–1.0mm |
|
Transparency |
More than 98% |
|
Temperature Range |
-20℃ to 150℃ |
|
Sterilization |
121℃ pressure sterilization |
|
Tube Shape |
Round bottom |
|
Scale Accuracy |
Reading error within 0.5% |
|
Mouth Finish |
Polished smooth mouth |
Key Features
- Clear sample view: the transparent wall keeps color change, precipitation, layering, and reaction progress visible during bench testing.
- Cleaner observation area: bubble, scratch, and impurity control keeps the viewing area clear for color-based testing and teaching display.
- Regular rack use: the round-bottom shape fits common test-tube racks, so multiple samples can be compared side by side.
- Reusable observation tube: repeated cleaning and sterilization keep the tube ready for visual tests without deforming the mouth or clouding the surface.
Customization Options
- Size Range: standard observation sizes plus non-standard diameter and length development
- Transparency Requirement: clear-wall selection for color observation and display use
- Graduation: printed scale, scale interval, scale color, and logo position
- Mouth Finish: polished rim, stopper-fit mouth, and cap-matching finish
- Identification: product label, private-label artwork, item code, and batch mark
Quality Control
Clear Glass Test Tube inspection is based on visibility and batch consistency. Yukang checks the approved sample, glass clarity, size, wall condition, graduation, and rim finish before production starts. The batch is then reviewed for transparency, bubbles, scratches, impurities, cracks, edge smoothness, scale visibility, and dimensional consistency.
Tubes that do not match the clarity and appearance reference are removed before release. Yukang checks every tube before packing, accepts third-party inspection, and handles confirmed quality issues through the 3-year warranty.
FAQ
Q: What is the MOQ for Clear Glass Test Tubes?
A: Standard MOQ starts from 1 export carton per clear-size specification. Custom transparency selection, printed scale, logo, and private-label orders start from 1,000 pcs per specification.
Q: Are samples free for clarity checking?
A: Standard samples are free, with freight excluded. Custom samples for scale color, logo position, and special clear-wall selection are produced in 2 weeks.
Q: What lead time applies to regular and custom orders?
A: Regular clear-size orders are usually scheduled in 7–15 days. Custom printed-scale, logo, non-standard size, and special clear-wall orders are scheduled in 20–30 days after sample approval.
Q: How are clear tubes protected during export packing?
A: The tubes are packed with inner separation and reinforced cartons to keep glass surfaces from rubbing during transport. Arrival damage is handled with product photos, carton-condition records, and quantity records.
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