Labware Products

Test Tubes

Test tubes are standard laboratory vessels for sample storage, mixing, and basic analysis in QC and R&D environments. They are available in round bottom, conical bottom, and cell test tube configurations with dimensions ranging from 12*60 mm to 22*120 mm. Made from PS, PP, or LDPE, they suit aqueous, organic, and biological samples. The tubes are supplied in bulk packaging with consistent geometry and sealing, enabling reliable handling in high-throughput workflows.

Available in multiple sizes and materials to match sample type and handling requirements
Round bottom and conical bottom designs support even mixing and stable placement in racks
Cell test tube variants are designed for cell culture applications with compatible dimensions
LDPE stoppers provide a secure seal for sample containment during transport or storage

Key Benefits

What This Product Gives You

Available in multiple sizes and materials to match sample type and handling requirements
Round bottom and conical bottom designs support even mixing and stable placement in racks
Cell test tube variants are designed for cell culture applications with compatible dimensions
LDPE stoppers provide a secure seal for sample containment during transport or storage
Bulk packaging reduces handling and packing time per unit, improving lab efficiency

Available in round bottom, conical bottom, and cell test tube configurations
Dimensions range from 12*60 mm to 22*120 mm with 13 mm, 15 mm, 16 mm, and 20 mm diameters
Tube stoppers available in Φ12, Φ13, Φ15, and Φ16 mm sizes for secure sealing
Part numbers follow a consistent format: TTR + size + material code (S=PS, P=PP, P=PP)
Designed for manual and automated handling with stable base and consistent wall thickness

Where It Is Used

Applications And Buyers

Application Scenarios

Storing biological samples such as cell cultures or serum in a controlled environment
Mixing reagents or diluting samples in a controlled volume range
Performing basic chemical reactions or precipitation tests in a small-scale setup
Transporting samples between lab stations without leakage or contamination
Using in automated systems where consistent tube geometry ensures proper fit in racks and holders

Who It Is For

Pharmaceutical and biotech R&D labs handling cell culture or small-volume sample processing
Environmental and food testing labs requiring consistent sample vessels for routine analysis
Clinical and diagnostic labs using standardized tubes for sample pre-processing
Lab distributors sourcing bulk labware with consistent packaging and part numbering
OEM partners needing custom labware with private-label packaging and material options

Problems It Solves

Inconsistent tube geometry causing misalignment in racks or automated systems
Leakage during transport due to poor sealing or incompatible stopper fit
Material incompatibility with aggressive solvents or biological samples leading to leaching
High consumable cost from sourcing multiple tube types from different suppliers
Lack of clear part numbering or identification leading to mislabeling or cross-contamination

Data

Specifications

Material	PS, PP, LDPE
Type	Round Bottom, Conical Bottom, Cell Test Tube, Tube Stopper
Size	1260, 1275, 1375, 1378, 13100, 15100, 16100, 16102, 22120, 20153 mm
Diameter	12 mm, 13 mm, 15 mm, 16 mm, 20 mm, 22 mm
Length	60 mm, 75 mm, 78 mm, 100 mm, 102 mm, 120 mm, 153 mm
Stopper Size	Φ12 mm, Φ13 mm, Φ15 mm, Φ16 mm
Package	6000 pcs, 5000 pcs, 4000 pcs, 3000 pcs, 2500 pcs, 1200 pcs per carton
Part Number Format	TTR + Size + Material Code (S=PS, P=PP)

Customization Options

OEM private-label printing available on tubes and stoppers
Custom packaging quantities and carton configurations for bulk orders
Material selection tailored to specific sample compatibility needs
Custom part numbering system for integration into lab inventory systems
OEM contract manufacturing for labware with private branding

How It Is Made

Manufacturing And Quality Control

Manufacturing Process

Material selection based on part number and application requirements
Part number and size printed on each tube or stopper for traceability
Bulk packing according to specified carton quantities
Quality inspection of dimensions and wall consistency before packaging

Quality Control

Dimensional inspection of each tube and stopper against specified size ranges
Visual inspection for defects such as cracks, warping, or flash
Sealing integrity test for stoppers to ensure no leakage under normal handling
Part number verification against the order specification
Consistency check of material type and wall thickness across batches

Comparison

Compared With The Alternatives

Versus Generic labware from unbranded suppliers

Microlab test tubes have consistent part numbering, material coding, and packaging, reducing misordering and traceability issues

Versus Glass test tubes

Plastic tubes are lighter, shatterproof, and suitable for single-use applications, reducing breakage and disposal risks

Versus Non-standardized tube sizes

All Microlab tubes follow a defined size and part number system, ensuring compatibility with racks and automated systems

Versus Non-sealing stoppers

LDPE stoppers provide a secure seal, preventing evaporation and contamination during storage or transport

Use Guide

How To Use It

Select PS for clear visibility and general use, PP for chemical resistance, LDPE for sealing
Use round bottom tubes for mixing and stable placement; conical bottom for sediment collection
Match stopper size to tube diameter to ensure a secure fit and prevent leakage
Do not exceed recommended temperature limits for material type (e.g., PS may degrade above 60 C)
Store tubes in dry, clean conditions to prevent contamination or deformation
Use in automated systems only if tube geometry and dimensions are verified for compatibility

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FAQ

Questions Buyers Ask

What material should I use for cell culture applications?

PP or PS are suitable for cell culture. PP offers better chemical resistance, while PS provides better clarity for visual inspection.

What is the difference between round bottom and conical bottom tubes?

Round bottom tubes are ideal for mixing and stable placement. Conical bottom tubes are designed to collect precipitates or sediments at the tip.

How are the tubes packaged?

Tubes are packed in cartons with quantities ranging from 1200 to 6000 pieces per carton, depending on size and material.

Can I get these tubes with my company's logo?

Yes. The OEM division offers private-label printing and custom packaging for bulk orders.

Are these tubes compatible with standard lab racks?

Yes. All tubes follow standard dimensions and are designed to fit common lab racks and holders.