Learn how to use this product The disposable LUNA™ 1-Channel Slides, sterile - gamma-irradiated - offer the largest measuring volume (up to 5.1 µL) and are compatible with the LUNA-FX7™ Automated Cell Counter. The large measuring volume lowers the coefficient of variation to even less than 1%. Lastly, the disposable LUNA™ 1-Channel Slides are convenient with no mess or cleanup and maintain the highest standard of cell counting accuracy.