Best Capillary Lab Tubes of 2026

Brian Howie Avatar
Brian Howie
Last Updated: Jan 8, 2026

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Capillary lab tubes are essential tools used in scientific research and laboratory settings. These small, thin tubes are made from high-quality glass or plastic materials, ensuring precise and accurate measurements. Capillary lab tubes are designed with a narrow diameter, allowing for the collection and transportation of small volumes of liquid samples. They are commonly used in areas such as chemistry, biology, and medical research for various applications, including blood analysis, DNA sequencing, and protein purification. With their reliable performance and ease of use, capillary lab tubes are a staple in any laboratory environment.

At a Glance: Our Top Picks

Eisco Labs Borosilicate Melting Tubes Cover #TOP 1
Eisco Labs Borosilicate Melting Tubes
ftb score rating icon 9.8
Sealed Unit Parts SU-BC1 Capillary Tubing Cover #TOP 2
Sealed Unit Parts SU-BC1 Capillary Tubing
ftb score rating icon 9.7
Karter Scientific Glass Capillary Tube Set (200 pcs) Cover #TOP 3
Karter Scientific Glass Capillary Tube Set (200 pcs)
ftb score rating icon 9.5

Top 10 Capillary Lab Tubes

#TOP 1

Eisco Labs Borosilicate Melting Tubes

CH0882B
Eisco Labs Borosilicate Melting Tubes Cover
Eisco Labs - 100 Pack Borosilicate Glass Capillary Melting Tubes, 4" Long, 0.05" OD - High-Temperature Resistant, Chemical-Resistant Melting Point Tubes with Easy Dispensing Container

The Eisco Melting Tubes are a set of 100 borosilicate glass tubes, each measuring 4 inches in length. Designed for accurate melting point determination, these tubes provide precise results essential for laboratory work. The convenient dispensing container allows you to easily access one tube at a time, making storage and retrieval hassle-free. Made from durable borosilicate glass, these tubes resist chemicals and withstand high temperatures, ensuring they can handle a variety of lab applications with reliability. This combination of features enhances your efficiency and accuracy in melting point testing.

What We Like
Precision melting point measurement
Convenient dispensing container
Chemical and heat resistance
Durable borosilicate glass
#TOP 2

Sealed Unit Parts SU-BC1 Capillary Tubing

SU-BC1
1 meters
Sealed Unit Parts SU-BC1 Capillary Tubing Cover
Sealed Unit Parts SU-BC1 Capillary Tubing

The Supco Capillary Tubing is a genuine replacement part from Sealed Unit Parts Co Inc, ensuring high quality and reliability. When your appliance needs a replacement, this product provides a perfect fit, making repairs straightforward for you. With its strong brand backing, you can trust that you are getting a component designed for durability. Plus, as an appliance-replacement part, it simplifies the maintenance process, helping you keep your equipment running smoothly and efficiently.

What We Like
Genuine replacement part
High quality and reliability
Easy appliance maintenance
Designed for durability
#TOP 3

Karter Scientific Glass Capillary Tube Set (200 pcs)

403Y6
PACK OF 200
Karter Scientific Glass Capillary Tube Set (200 pcs) Cover
Glass Capillary Tube Set, Plain and Heparinized, Karter Scientific (Set of 200)

The Karter Scientific Capillary Tubes come in a set of 200, offering you a balanced mix of 100 red and 100 blue tubes. These tubes are made from durable borosilicate glass, which ensures they are sturdy and reliable for your lab work. Each tube has a small inner diameter between 1.1 and 1.2 millimeters, perfect for precise sample collection or measurements. With a length of 75 millimeters, these tubes are easy to handle and fit well in most laboratory setups, giving you convenience and accuracy in your experiments or tests.

What We Like
Set of 200 tubes
Borosilicate glass material
Precise inner diameter
Compact 75mm length
#TOP 4

Reallnaive 1000 Pcs Glass Capillary Tubes

Reallnaive-Capillary Tubes-1
Reallnaive 1000 Pcs Glass Capillary Tubes Cover
Reallnaive 1000 Pcs Glass Capillary Tube 100mm Melting Point Tube Both Ends Open Glass Pipettes for TLC Spotting Lab Supplies (0.3 ID mm and 0.5 mm OD)

The Reallnaive Capillary Tubes come in a generous pack of 1000, making them perfect for extensive laboratory use. These tubes are ideal for both thin layer analysis and melting point detection, ensuring precision in your experiments. Crafted from durable glass, they measure 100 mm in length with a 0.3 mm inner diameter and 0.5 mm outer diameter, providing a reliable option for various lab applications. Their smooth, clear surface allows for easy handling and operation, enhancing your efficiency in the lab.

What We Like
Bulk pack of 1000
Durable glass material
Ideal for melting point detection
Easy to handle
#TOP 5

Reallnaive 200 Pcs 75mm Glass Capillary Tubes

Reallnaive-Capillary Tubes-3
clear
Reallnaive 200 Pcs 75mm Glass Capillary Tubes Cover
Reallnaive 200 Pcs Glass Capillary Tubes 75 mm Micro Pipette Capillary Transfer Tube with 1.1 ID and 1.5 OD for Lab TLC Spotting

The Reallnaive Glass Capillary Tubes come in a set of 200, each measuring 75 mm long with precise inner and outer diameters to help you collect samples accurately. These tubes are designed to make sampling small volumes simple and consistent, which is especially helpful when working with tiny reaction vessels. Made from quality clear glass, they are durable and easy to clean, ensuring reliability in your lab experiments. Their straightforward and compact design allows for easy handling, making your laboratory tasks smoother and more efficient every time you use them.

What We Like
Large quantity pack
Precise sampling size
High-quality clear glass
Easy to handle and clean
#TOP 6

Hikiwin 1000pcs Glass Capillary Tubes 100mm

Glass Capillary Tubes
0.3x100mm
Hikiwin 1000pcs Glass Capillary Tubes 100mm Cover
Hikiwin 1000pcs Glass Capillary Tubes,100 mm Micro Glass Capillary Tubes,Tube Both Ends Open Glass Pipettes for TLC Spotting Lab Supplies,0.3mm ID,0.5mm OD,Pack of 1000

The Hikiwin Glass Capillary Tubes offer precise measurements with a 100mm length and very fine inner and outer diameters, giving you accurate results for your lab work. Made from high-quality, lab-grade glass, these tubes resist chemicals well, so you can use them with various substances without worry. Their smooth, seamless design helps you spot samples easily and precisely, making your thin layer chromatography or small volume sampling tasks simpler. Plus, these tubes are versatile, perfect for different lab uses such as TLC spotting and chemical analysis, helping you stay prepared for a range of experiments.

What We Like
Precise dimensions
Chemical resistance
Smooth, seamless design
Multi-purpose use
#TOP 7

Scienfocus Lab Glass Capillary Tubes 75mm 200PCS

MXG-200
Scienfocus Lab Glass Capillary Tubes 75mm 200PCS Cover
Glass Capillary Tubes-200PCS, 75 mm Micro Glass Capillary Tubes,1.1 mm ID and 1.5 mm OD,Open on Both Ends

The Scienfocus Glass Capillary Tubes come in a pack of 200, each measuring 75mm in length with a 1.1mm inner diameter and 1.5mm outer diameter. These tubes are perfect for sampling small volumes in lab containers, making them ideal for frequent use. Their smooth, clear borosilicate glass ensures easy handling and reliable results, so you can trust your measurements. The high transparency and stable quality of the glass also provide precise quantification, helping you achieve accurate outcomes in your experiments. Overall, these tubes offer simplicity and efficiency for your laboratory sampling needs.

What We Like
Large 200-piece pack
High transparency borosilicate glass
Easy and reliable sampling
Precise measurement capability
#TOP 8

ALWSCI Borosilicate Glass Capillary Tubes 0.3mm ID x 100mm

AL0003520
0.3mmx100mm
ALWSCI Borosilicate Glass Capillary Tubes 0.3mm ID x 100mm Cover
Glass Capillary Tubes 0.3 mm ID x 100 mm, 1000pcs per Tube for TLC and Lab Sample Application, Borosilicate Material

The ALWSCI Glass Capillary Tubes are made from durable borosilicate glass, which ensures resistance to wear and provides long-lasting use. Each tube measures 100 mm in length with a narrow 0.3 mm inner diameter, making them perfect for precise liquid handling tasks. The tubes come packaged individually with an anti-shock design, so you can access them easily without worrying about breakage. Their smooth and clear structure allows you to see the liquid clearly and handle samples with ease, making your work in labs or educational settings much more convenient and efficient.

What We Like
Durable borosilicate glass
Precise 0.3 mm inner diameter
Anti-shock individual packaging
Clear and smooth surface
#TOP 9

Corning 9530-3 Pyrex Melting Point Tubes

9530-3
Corning 9530-3 Pyrex Melting Point Tubes Cover
Corning 9530-3 Pyrex Capillary Melting Point Tube, One End Open, 0.2 mm Wall Thickness (Pack of 100)

The Corning Melting Point Tubes are designed for precision in laboratory settings. Made in the USA, these tubes measure 90 mm in length and feature a sturdy 0.2 mm wall thickness, ensuring durability during use. The pack contains 100 tubes, providing ample supply for your experiments. The compact packaging, with dimensions of 5.75 L x 5.25 H x 4.5 W inches and a weight of just 1.5 pounds, makes storage and handling convenient. You’ll appreciate the quality and reliability these tubes bring to your melting point determinations.

What We Like
Durable construction
Compact packaging
Made in USA
Ample supply in pack
Lightweight for easy handling
#TOP 10

Lichen Cottage 100mm Glass Capillary Tubes

(ID): 0.3mm/ (OD): 0.5m
Lichen Cottage 100mm Glass Capillary Tubes Cover
Glass Capillary Tubes, 100 mm Micro Glass Pipettes Capillary Transfer Tube with 0.3mm ID and 0.5mm OD for TLC Spotting, Pack of 1000

The Lichen Cottage Capillary Tubes are ideal for various laboratory applications. Each tube is 100mm long with a 0.3mm inner diameter, making them perfect for handling small volumes of liquids. The high-quality glass construction ensures transparency and smooth surfaces, which allows you to easily view and manage your samples. With a pack of 1,000 tubes, you will have plenty for multiple experiments. Just remember to handle them with care due to their delicate size. These tubes are a reliable choice for organic and analytical work, providing convenience and efficiency in your projects.

What We Like
High-quality glass material
Perfect for small volumes
Pack of 1,000 tubes
Ideal for laboratory use
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is capillary tube used for in the laboratory?

Capillary tubes are used in laboratories for collecting liquid samples and reducing pressure. They are commonly used to check concentrations, molarity, molality, and can also be used in refrigeration to control the flow of refrigerants.

2. What type of tube is used for capillary puncture?

Microcontainer tubes are specifically designed small plastic tubes used for capillary puncture to collect minute volumes of blood.

3. What are the different types of capillary tubes?

There are several types of capillary tubes available, including Capillary Tube, Microhematocrit, Soda Lime Glass with Blue Tip or Plain, Capillary Tube, Microhematocrit, Soda Lime Glass with Green Tip (Ammonium Heparinized), Capillary Tube, Microhematocrit, Soda Lime Glass with Red Tip (Sodium Heparinized), and Capillary Tube, Microhematocrit, Borosilicate Glass, Precalibrated.

4. How do you collect blood from a capillary tube?

To collect blood from a capillary tube, hold the finger in an upward position and lance the palm-side surface of the finger with a proper-size lancet. Press firmly on the finger during the puncture to obtain the required amount of blood. Cap the Microtainer® and gently invert it 10 times to prevent clots from forming.

5. What are the 2 most commonly used sites for capillary puncture?

The finger is usually the preferred site for capillary testing in adult patients. The sides of the heel are commonly used in pediatric and neonatal patients. In some cases, ear lobes may be used for mass screening or research studies.

Editor's Notes

During our capillary lab tube research, we found 24 capillary lab tube products and shortlisted 10 quality products. We collected and analyzed 2,479 customer reviews through our big data system to write the capillary lab tubes list. We found that most customers choose capillary lab tubes with an average price of $16.75.

The capillary lab tubes are available for purchase. We have researched hundreds of brands and picked the top brands of capillary lab tubes, including EISCO, Supco, Karter Scientific, Reallnaive, Hikiwin. The seller of top 1 product has received honest feedback from 513 consumers with an average rating of 4.8.

Written by
Brian Howie Avatar

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.