This section provides an overview for transfer pipettes as well as their applications and principles. Also, please take a look at the list of 11 transfer pipette manufacturers and their company rankings. Here are the top-ranked transfer pipette companies as of November, 2023: 1.Chemplex Industries, Inc..
Transfer Pipette is a tool used to transfer liquids.
It is a disposable, one-piece product made primarily of polyethylene, and is also called a polyethylene syringe. The air is expelled by pressing the valve (the inflated part), the tip is dipped into the liquid, and then the valve is returned to create negative pressure inside the dropper, which sucks up the liquid.
After aspirating, the valve can be pushed to dispense a fixed volume (i.e., the volume of the valve) by pushing the valve to expel the liquid inside.
Transfer Pipettes are used in a wide variety of fields, including research and development, medicine, nursing care, hygiene, production, construction, agriculture, and the food and beverage industry, because they are disposable tools that can be used to measure or transfer liquids easily.
The valve of the Transfer Pipette is dipped into the liquid in the tube or bottle by pressing it with a finger, and then the liquid is sucked up when the finger is released. The liquid can be dispensed by pressing again, and this series of operations is used for transferring and measuring.
Metering is dependent on the volume of liquid discharged when the valve is pressed (the same as the volume aspirated). The valve is designed so that it can be dispensed and aspirated with a certain degree of reproducibility when naturally pressed, and the volume that can be aspirated after the valve is pressed once is the aspirated volume.
When selecting a product, the aspiration volume should be taken into consideration depending on the work to be performed. Because of the finger-press design, the maximum aspiration volume is 3 mL. The minimum is about 20 μL.
Depending on the work to be performed (especially the point of insertion), the length and thickness of the stem, and whether it has a tapered tip or not, should be selected. The length can vary from 51mm to 239mm.
After aspirating, a small amount of the aspirated sample can be dropped onto the valve by lightly pressing the valve, and the amount of a drop that falls is mainly determined by the tip shape (thinness). In this respect, it is preferable to select a suitable product in consideration of the work to be performed.
After sterilization by gamma or gas (EOG), individually packaged products can be used in experiments that require aseptic manipulation, since the risk of bacterial contamination is eliminated.
Low-density polyethylene used as raw material is non-toxic with few leached components. The material is resistant to cell and protein adsorption and loss. The low affinity surface prevents loss of cells and valuable proteins through binding.
Thermoplasticity and heat sealing of the pipette tip allows for direct freezing and storage.
The long, flexible stem portion is soft and bends well, allowing the pipette to be inserted into thin, small-volume tubing and used to aspirate liquids.
Since most products are made of polyethylene, precautions are listed below in this regard.
Limited Chemical Resistance
The product is resistant to alkali, hydrochloric acid, sulfurous acid, and hypochlorous acid, but weak against strong oxidizing acids such as nitric acid and chromic acid. Generally weak against organic solvents, but can handle isopropyl alcohol.
Low Heat Resistance
The product can withstand temperatures of up to 70-90°C. Cannot be autoclaved, and must be sterilized with gamma rays or EOG gas.
Not Resistant to Very Low Temperatures
The low-temperature resistance of low-density polyethylene is limited to -60°C. Even if aspirated samples are sealed and stored frozen, ultra-low temperatures (such as -80°C) should be avoided. Liquid nitrogen freezing should also be avoided.
*Including some distributors, etc.
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Corning Incorporated, founded in 1851 and headquartered in Corning, New York, is a manufacturer and supplier of specialty glass, ceramics, and optical fiber. Their offerings include optical fiber for long-distance light signal transmission, specialty glass for applications like displays and lighting, ceramics for various uses, such as cookware and medical implants, and advanced materials like 3D printing powders and ceramic matrix composites. Additionally, Corning provides products for the life sciences industry, such as labware, consumables, and analytical instruments.
Chemplex Industries, Inc., founded in 1978, is a manufacturer and supplier of sample preparation equipment and accessories for spectroscopy. The company offers a diverse range of products including fusion equipment, grinding mills, and pellet presses. Based in the United States, Chemplex serves various industries including mining, cement, pharmaceuticals, and more. Known for its product quality and technical expertise, Chemplex Industries, Inc. provides tailored solutions to enhance sample analysis accuracy. Through its research and development, the company continues to empower laboratories worldwide with modern and advanced sample preparation solutions.
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.
Specialty Manufacturing, Inc. is a manufacturer of fluid packaging products since 1988 based in Indiana. The company designs bottles in clear and Polypropylene material and in different sizes, along with Lab Consumable Supplies like Nitrile Gloves, test tubes, transfer pipettes, vials and crimp caps, and test tube plug caps. They also make Mailing Containers, Tubing, and Sample pumps with their molded carrying case and other accessories that extensively serve the fluid analysis industry.
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.
Runlab, headquartered in Zhejiang, China, is a manufacturer and supplier of laboratory plastic consumables. The company offers a diverse range of products, including centrifuge tubes, pipettes, swabs, microscope slides, and storage boxes, in which its products are used in applications, such as clinical diagnostics, research, food safety, environmental testing, and pharmaceutical manufacturing. The company is also ISO 13485:2016 certified and EN14683, and has also received the CE mark for their products.
Accumax, established in 2003, is a global producer of liquid handling products with a presence in over 130 countries. Range of offerings by Accumax includes Pipettes and Pipette Controllers, Bottle Top Dispensers, Tips, Tubes, and PCR Consumables. Precision, ease of use, and innovation are the hallmark of Accumax's products, which are manufactured, assembled, calibrated, and packaged at its state-of-the-art facility in Gujarat, India. The company's strict quality control process guarantees products are precisely calibrated and meet customer expectations.
National Analytical Corporation (NAC) is located in Mumbai, India. NAC was founded in 2009 as a distributor of laboratory grade chemicals used in numerous industries. NAC’s chemical offerings include biochemical & reagents such s Prunetin and 1,2-dipalmitoly-rac-glycerol, analytical grade chemicals such as chicoric acid and Vitamin E solutions, laboratory chemicals such as formic acid and nitric acid, gas chromatography chemicals such as Aalborg mass flowmeter battery kits and DEX 225, reference standard chemicals such as Palladium in HNO3, oral solid dosage forms, such as cellulosic and protect film coating systems, parenteral dosage forms, beverage & nutrition, and coating chemicals.