All Categories
History
This section provides an overview for hematocrit capillary tubes as well as their applications and principles. Also, please take a look at the list of 9 hematocrit capillary tube manufacturers and their company rankings. Here are the top-ranked hematocrit capillary tube companies as of May, 2025: 1.Henso Medical (Hangzhou) Co.,Ltd., 2.Deltalab, 3.RAM Scientific.
Table of Contents
1993~2019: Engaged in pharmaceutical research and development and analysis of various biological samples at the Pharmaceutical Research Institute of Japan Kayaku Co., Ltd. He is also in charge of facility management as a dangerous goods handler and radiation handling chief.
2019: Moved to another company in the same industry and has been in charge of similar work until now.
He also writes, translates, and edits specialized books.
Linkedin: https://www.linkedin.com/in/makoto-niwa-25331040/
Researchmap: https://researchmap.jp/0000-0002-2355-1222/
A hematocrit capillary tube is an instrument used in blood testing.
Blood is composed of cellular components: blood cells (red blood cells involved in oxygen transport and white blood cells involved in the body's immune defense) and platelets, and plasma, the liquid component that suspends these cellular components. In healthy human blood, the majority of cellular components are red blood cells. Red blood cells contain hemoglobin (Hb), which gives blood its red color and oxygen-binding capacity.
Plasma is composed primarily of water (about 93%), with other components including salts, various proteins, lipids, and sugars (e.g., glucose). The hematocrit, or the percentage of red blood cell volume in the blood, is sometimes determined during a blood test. For example, it can be used as an indicator of anemia. Anemia is a thinning of the blood, and hematocrit is used as an indicator of this condition.
The hematocrit capillary tube is the instrument used to measure this hematocrit.
Hematocrit capillary tubes are primarily used to measure hematocrit in blood tests. It is also sometimes used to obtain small amounts of plasma in animal experiments.
Hematocrit measurements may be performed when anemia, dehydration, bleeding, or other medical or surgical conditions are suspected. A low hematocrit reflects a low number of circulating red blood cells and is an indicator of reduced oxygen-carrying capacity or overhydration.
Examples of conditions that can cause low hematocrit (anemia) include.
A high hematocrit may reflect an absolute increase in red blood cell count or a decrease in plasma volume.
Because of its ability to collect very small amounts of blood and to obtain plasma by centrifugation, it is sometimes used to obtain minute amounts of plasma, mainly from animals (micro sampling).
The most commonly used hematocrit capillary tube is a capillary tube (capillary tube) with a heparinized inner surface. Untreated (plain) capillaries are also available.
When one end of the capillary tube comes in contact with the collected blood, the blood is sucked into the capillary tube by capillary action. At the same time as the blood is sucked up, the heparinized blood is anticoagulated with heparin.
The capillary is then centrifuged to separate the blood cells from the plasma. The hematocrit is determined from the length of the blood cell portion (erythrocyte column), which appears red, and the plasma portion, which appears colorless to pale yellow (in humans).
Hematocrit is defined as the ratio of red blood cell volume to total blood volume, also known as packed cell volume (PCV). When heparinized blood (heparin is an anticoagulant) is centrifuged, the red blood cells become packed at the bottom of the tube and the plasma remains as a clear liquid at the top. The ratio of this volume of packed red blood cells to the total blood volume is the hematocrit.
Hematocrit is reported as a percentage or ratio. In healthy adults it is about 40-48%, but in newborns it can reach 60%.
The following is a summary of the abbreviations associated with discussing hematocrit.
Seal
One end of the capillary must be sealed before centrifugation. If not sealed, centrifugal force will cause the blood to flow out. To seal the capillary, a special putty is used.
After the blood is sucked up, one end of the capillary is sealed by sticking one end into the special putty and allowing the putty to bite into the inside of the capillary. The sealed side should face outward, i.e., toward which centrifugal force is applied.
Scale Plate
To obtain a hematocrit value from the centrifuged blood sample in the capillary tube, refer to the scale plate. Move the scale down the sample until the bottom of the packed red blood cell column first lines up with the "0" line on the scale plate, then the top of the plasma column lines up with the "100%" line.
At this point, read the values at the border between the red blood cell column and the plasma column. The white layer, the layer between the red blood cell and plasma columns, makes up about 1% of the sample, but this layer is not included on the red blood cell side.
A glass capillary tube is used, and the blood is collected and the sealed capillary tube is centrifuged as in normal use. The glass capillaries are used because they are folded in the process of centrifugation. After centrifugation, a scratch is made on the border between the blood cell column and the plasma, slightly closer to the plasma, with a glass cutter, and the capillary is folded.
The broken capillary is placed in a collection vessel (e.g., microtubes) and centrifuged to collect the plasma in the vessel. Since this method is difficult to perform, recently, a special device for micro-sampling has been developed.
*Including some distributors, etc.
Sort by Features
Sort by Area
Globe Scientific Inc. is an American ISO 9001 certified manufacturer of laboratory equipment that was founded in 1983 before its acquisition by the GSI group in 2022. Headquartered in Mahwah, New Jersey, the company produces laboratory benchtop equipment, glassware, and plasticware including centrifuges, vials, microscopes and beakers. These are primarily used for chemical testing or analysis, research, and quality control applications. Globe Scientific also offers contract manufacturing and packaging services for customer projects and equipment orders. The company chiefly serves clients in the education, healthcare, biotechnology, and laboratory sectors.
Delta lab, established in 1976 and headquartered in Rubí, Spain, is a manufacturer that designs and produces labware, including single-use labware. The company's offers a wide range of products, including polyethylene caps, syringes, wash bottles, analytical funnels, and weighting boats. It also provides microbiology, cell culture, molecular biology, hematology, and biochemistry. Its products are tailored to each patient's prescription and position of wear measurements, ensuring that no two pairs of glasses are the same. The company has achieved ISO 9001:2015 and ISO 13485:2016 certification. It serves several industries, including education, laboratory, medical devices, and packaging.
Chongqing New World Trading Co., Ltd, founded in China, in 2009 is a manufacturer of medical disposables and laboratory plastic wares. The company's product portfolio includes blood rotator mixers, water baths, thermometers, microscopes and drying ovens. Their products are used in industries such as Food and Beverage, Pharmaceutical and Biotechnology, Chemical and Petrochemical, Environmental Testing and healthcare. They also offer custom packaging, warehousing, technical and customer support and distribution services.
Drummond Scientific Company is a manufacturer of essential sample heading devices that is headquartered in Broomail, Pennsylvania and was established in 1948. The company offers services such as product manufacturing, lateral flow assembly, and point of care devices. On the other hand, the company also has a wide range of product lineup such as piper-aid and pipette controllers, microinjection, micro dispensers, and capillary micropipettes. The company mainly caters to life science companies and its needs for custom manufacturing solutions.
DWK Life Sciences Gmbh, founded in 1887, is a German multinational manufacturer and supplier, based in Wertheim, Baden-Württemberg, specializing in glass and plastic primary packaging. The company produces container closure systems (CCSs), tailored for pharmaceutical, biotechnology, diagnostic, and personal care applications. These include laboratory bottles, equipment and tools, as well as chemistry and volumetric glassware. The company also offers measuring tools, along with other products such as beakers and flasks, caps and closures, containers and vessels, funnels and tubes, as well as microplates and vials. These products find applications across various research domains, such as analytical sciences, cell culture, and organic chemistry.
McKesson Medical-Surgical, located in the United States, is a distributor of medical supplies established in 1833. The company offers healthcare solutions, clinical resources, and distribution services. They provide a wide range of medical products with the largest delivery vehicle fleet and over 900 delivery professionals nationwide. In addition to their distribution services, they provide laboratory and pharmaceutical services, as well as solutions for inventory management. Their technology consultants offer a no-cost evaluation of the customers' supply and inventory workflow, providing with recommendations on how to drive savings and efficiencies to help uncover opportunities and match solutions to customers' specific needs.
Ranking as of May 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Henso Medical (Hangzhou) Co.,Ltd. |
42.9%
|
| 2 | Deltalab |
14.3%
|
| 3 | RAM Scientific |
14.3%
|
| 4 | Chongqing New World Trading Co., Ltd |
14.3%
|
| 5 | Globe Scientific Inc. |
14.3%
|
Derivation Method
The ranking is calculated based on the click share within the hematocrit capillary tube page as of May 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
2 | 33.3% |
|
China
|
2 | 33.3% |
|
Spain
|
1 | 16.7% |
|
Denmark
|
1 | 16.7% |
33 products found
33 products
Fine Glass Technologies Co., Ltd.
320+ people viewing
Last viewed: 3 hours ago
It is tapered in the form of a redrawn glass capillary. In addition to being used for liquid transportation in syringes, electron beams, and X-ray ...
Nippon Electric Glass Co., Ltd.
200+ people viewing
Last viewed: 42 minutes ago
<Microcapillary> is a borosilicate glass capillary. Used as optical fiber connection support for optical connectors, optical fiber splices, and opt...
Tokyo Instruments, Inc
170+ people viewing
Last viewed: 4 hours ago
■Summary We offer 3 types: Special Glass (SG), Boron Rich (BG), and Quartz (QZ) in a pack of 25 tubes. ■Features ・Tube thickness: 0.01 mm ・Total...
Nippon Electric Glass Co., Ltd.
160+ people viewing
Last viewed: 18 hours ago
〈Rectangular hole microcapillary〉 allows multiple fibers to be lined up and aligned with a single capillary. 〈Pollinal hole microcapillary〉 has...
Masaie Co., Ltd.
1010+ people viewing
Last viewed: 22 minutes ago
■ Features QUADRA Capilla Hose is an orange or black thermoplastic plastic flexible hose. Use a special tool to attach brass or steel joints. It c...
10 models listed
Akagawa Hard Glass Industry Co., Ltd.
380+ people viewing
Last viewed: 15 hours ago
We can create micro-sized glass tubes upon consultation. ■Accomplishments ・Outer diameter 300μm/Inner diameter 60μm ・Outer diameter 60μm/Inner d...
Berthold Japan Co., Ltd.
180+ people viewing
Last viewed: 1 day ago
This is a disposable capillary. The capillary is automatically filled with sample with an accuracy of less than 1%. The bulb of the included capill...
Kuraray Plastics Co., Ltd.
250+ people viewing
Last viewed: 16 hours ago
■Features ・Drains water that has seeped onto the waterproof layer (bridge surface, etc.). ・Even when piping is installed close to steel materials...
Nakatani Manufacturing Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
Nakatani Manufacturing Co., Ltd.
90+ people viewing
Last viewed: 9 hours ago
Systech Co., Ltd.
120+ people viewing
Last viewed: 1 day ago
■Alltima HP ・High purity silica ・Excellent column stability ・No detectable column bleed ・pH stability 1-10 ・Various selectivity ・This column ...
Autex Co., Ltd.
60+ people viewing
■Quartz capillary with excellent heat resistance and chemical resistance, and index mode optical fiber that supports a wide range of bandwidth and ...
Toshin Electric Co., Ltd.
80+ people viewing
A porous material with fine spaces inside adjusts light transmittance and liquid water absorption. Felt nib used for pen nibs, etc. case study ■Di...
Systech Co., Ltd.
80+ people viewing
Made by MEGA in Italy. ■Features Tested for EPA Method 624 ■Applications EPA Methods 524, 601, 602, 624, 8240, 8260, Solvent Analysis ■Equivalen...
Systech Co., Ltd.
80+ people viewing
Last viewed: 1 day ago
Made by MEGA in Italy. A column that is the same as AT-5 but made cheaper through batch testing. See AT-5 for specifications. For general applicat...
Systech Co., Ltd.
80+ people viewing
Made by MEGA in Italy. This is a 100% polyethylene glycol type column. ■Applications FAMEs, polar solvents, BTEX, perfumes and fragrances, glycols...
Systech Co., Ltd.
80+ people viewing
Made by MEGA in Italy. This is a 100% polyethylene glycol type column. ■Features Column made cheaper through batch testing. 6-pack is better value
Morishita Co., Ltd.
160+ people viewing
Last viewed: 16 minutes ago
■Features We develop prototypes with the outer diameter, inner diameter, length, wall thickness, etc. that you request, depending on the purpose an...
