The SpectraSlide® AP-1, developed by Logos Biosystems, is designed to address one of the key challenges in cellular analysis—improving workflow efficiency during the cell counting sample preparation process. Traditional workflows for cell counting and viability analysis often require the use of additional labware and staining dyes, which can add time and increase costs, and generate unnecessary waste. The SpectraSlide AP-1 solves the problem by integrating cell sampling and cell staining into a single disposable slide compatible with the LUNA-FX7™ automated cell counter. This innovation helps to eliminate inefficiencies while saving both time and money.
At the core of the problem is the need to streamline cell counting workflows, which traditionally involve steps such as pipetting and staining. These steps not only increase the complexity of sample preparation but also create opportunities for error and contamination. The SpectraSlide AP-1 directly targets these challenges by offering an all-in-one slide that is preloaded with acridine orange (AO) and propidium iodide (PI). These fluorescent stains dissolve instantly when they come into contact with liquid samples, thereby ensuring rapid, uniform cell staining without any additional mixing.
The SpectraSlide AP-1 address several cell counting pain points. First, it increases productivity by cutting down on preparation steps and allowing researchers to move quickly from sample collection to analysis. Second, it streamlines the process by integrating both sampling and staining into a single workflow. Third, it simplifies sample preparation, eliminating the need for pipettes and reducing reliance on reagents for staining. Fourth, it eliminates waste by reducing the need for disposable consumables while minimizing the amount of sample and reagent used. Finally, it minimizes the sample volume required, ensuring cell analysis can be achieved with less than 20 µL while still analyzing approximately double the volume of a standard hemocytometer.
The SpectraSlide AP-1 has also been designed with efficiency in mind. Its “click–dip–release” loading method only requires three steps: depress the rubber dome, dip the slide into the sample, and release pressure to aspirate cells. Once loaded, the slide is placed into a slide bed and inserted into the LUNA-FX7 automated cell counter. After a brief 30-second settling period, the system performs automated cell concentration and viability analysis. The slide bed itself helps prevent cross-contamination, ensuring reproducibility while maintaining quality control.
The SpectraSlide AP-1 has been demonstrated to work across a range of cell types. These include commonly used cell lines such as CHO-K1, HEK293, HL60, and Jurkat, as well as more challenging specimens like splenocytes and isolated nuclei. The latter are often difficult to analyze accurately using other image-based cell counting methods, highlighting the utility of this slide in diverse applications.
In terms of applicability, the SpectraSlide AP-1 is suited for a wide variety of life science applications, especially those requiring fluorescence detection for rapid cell analysis. This makes it useful for researchers working with cell lines who require consistent, reproducible data from their cell viability and concentration analyses.
Overall, the SpectraSlide AP-1 improves on the inefficiencies of traditional cell counting workflows. By integrating sampling, staining, and loading into one disposable slide, it simplifies laboratory operations, reduces waste, and enhances reproducibility. Designed specifically for use with the LUNA-FX7, this product supports laboratories by simplifying workflows while ensuring accuracy and reliability.