Single-use, Unirradiated, Mini Concentrating Pipette Tips (CPTs) are available in a variety of formats. Selecting the ideal CPT for use with the FluidPrep Concentrating Pipette System is crucial to achieving optimal performance - both in terms of speed and concentration factor of your target.
Selecting the Right CPT - Factors to consider
1 - Pore Size based on Nature and Size of Target Particle
CPTs are available in four pore sizes – Ultra, 0.05 µm, 0.2 µm and 0.45 µm to accommodate the wide range of target particle types and sizes.
*Volume and flow rates will vary by matrix and selected menu settings
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2 - Surface Area by Sample Matrix and Sample Volume
The complexity of your sample and overall volume to be processed will influence the speed and overall volume that can be processed effectively. Two options are available.
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Standard CPTs Membrane surface area is 98 cm² nominal. Recommended for sample volumes over 200 mL and/or more complex or turbid matrices.
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Mini 25 CPTs - The membrane surface area is 25 cm² nominal and capable of smaller elution volumes with optimized menu settings. Recommended for sample volumes 200 mL or less and of low complexity/turbidity. Short-walled sample containers and the CP Sample Carousel are required for use.
As a general Rule of Thumb, we recommend using the smallest tip that provides the desired concentration factor for your application.
3 - Packaging Format by Target Application
All products are produced aseptically in a cleanroom environment. Understanding your downstream application will help identify which package format is best suited.
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Non-irradiated CPTs -Bulk packaged and suitable for most applications due to the inherent low background. Recommended if target organisms are non-ubiquitous or using selective assays.
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Irradiated CPTs - Individually wrapped and irradiated to provide added protection against bioburden. Best for culture-based downstream applications.
Tips are designed for use with the CP Select (sold separately)
We recommend use with the CP sample carousel item #HC08042, and our selection of short-walled sample containers, Sample Cup Flip-Top 200 mL item #HC08040-10, Sample Vial Flip-Top 10 mL item # HC08041-10, and Sample Cup with Conical Bottom item #AC08106-10.
