When you’re developing a diagnostic assay, you want to focus on the chemistry—not the parts. Having dependable parts for your point-of-care (POC) or lab-based tests will allow you to shift your efforts away from the mundane.
Cytiva provides a range of components for molecular and immunodiagnostic assay development. You can order off-the-shelf or have the parts customized to your application. You can count on a secure supply of high-quality cellulose and glass fiber substrates and nitrocellulose membranes to achieve accurate and reproducible results.
Use the form to request samples of pads and membranes for:
Our complete range of sample pads feature:
- high-quality materials manufactured in controlled environments
- consistent absorbency and wicking rates for test-to-test reproducibility
- low protein binding to prevent loss of analyte
- naturally hydrophilic materials for rapid rewetting even after prolonged storage
Blood separators for immunochromatographic assays:
- are typically a cellulosic or glass fiber depth filter
- have a choice of separation times of 30–120 s for optimization of rapid tests
- have no appreciable red cell hemolysis, which leads to improved reproducibility of results
Our conjugate release pads:
- do not require treatment prior to conjugate application as they are inherently hydrophilic
- have an open structure to allow rapid penetration by both conjugate and sample
- show increasing capture-line intensity for improved assay sensitivity as more conjugate reaches the line
- are naturally hydrophilic to rewet rapidly every time for improved test consistency
Membranes for lateral-flow immunoassay production include:
- unbacked membranes that allow use of the belt side or air side
- backed membranes that are sturdy and easier to use for manufacturing
- availability of different pore sizes for a variety of capillary flow rates (for most membrane grades)
Absorption pads are available as:
- cellulose, glass fiber, and cellulose-glass fiber blends to address all sample types and specific needs
- medium-weight grades, CF3, CF4, CF5, and 470, can accept medium and larger volumes
- very thick grade, CF7, for high sample volumes
- Absorption pads provide consistent absorbency and are naturally hydrophilic, meaning a minimal loss of analyte
Unbacked membranes:
- include small-pore membranes such as BA83 and BA85
- are highly sensitive small-pore membranes
- have large surface areas and high protein binding capacity
Absorption pads are:
- made from 100% pure cellulose for fast wicking and high water absorbency
- available in a range of thicknesses sufficient for most flow-through assays
Cellulose fiber pads feature:
- highly consistent and inert substrate for absorption of the active chemicals
- purity of the cellulose base material coupled with quality manufacturing practices for large-scale manufacturing
- a wet-strengthened grade, CF2, which contains an FDA-approved resin that binds the cellulose fibers together
Unbacked membranes:
- are constructed of 100% nitrocellulose
- offer a higher level of purity and performance than that seen in post-treated materials
Nylon membranes have:
- high sensitivity, low background, and lot-to-lot consistency for all radioactive and nonradioactive detection methods
- an intrinsically hydrophilic nature that results in easy wetting across the membrane
Track-etched membranes (TEMs):
- have very tightly controlled pore size distribution
- allow for quantification of cells or microorganisms, which are captured on the membrane surface
- are usually transparent at larger pore sizes, which allows complete transmission of light, ensuring excellent signal-to-noise ratio
Fill out the form to request samples of pads and membranes for your chosen application
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Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .
Curious about continuous biomanufacturing? Join the Cytiva project team vlog series as we document our proof of concept trial and provide insights to help you efficiently plan and execute your project .