Instrument Standards

The dye exclusion test is used to determine the number of viable cells present in a cell suspension. It is based on the principle that live cells possess intact cell membranes that exclude certain dyes, such as trypan blue, Eosin, or propidium, whereas dead cells do not. In this test, a cell suspension is simply mixed with dye and then visually examined to determine whether cells take up or exclude dye. In the protocol presented here, a viable cell will have a clear cytoplasm whereas a nonviable cell will have a blue cytoplasm.

This product is for research use only and is not intended for use in humans or for in vitro diagnostic use.

Our new StarLight™ Calibration Slides feature vibrant ~6um fluorescent microspheres dyed with Glacial Blue (360, 450) for basic imaging checks and calibration. Available individually or as part of the full 4-slide collection (Cat. #25445).

Our new StarLight™ Calibration Slides feature vibrant ~6um fluorescent microspheres dyed with Dragon Green (480, 520) for basic imaging checks and calibration. Available individually or as part of the full 4-slide collection (Cat. # 25445).

Our new StarLight™ Calibration Slides feature vibrant ~6um fluorescent microspheres dyed with Envy Green (525, 565) for basic imaging checks and calibration. Available individually or as part of the full 4-slide collection (Cat. #25445).

Our new StarLight™ Calibration Slides feature vibrant ~6um fluorescent microspheres dyed with Flash Red (660, 690) for basic imaging checks and calibration. Available individually or as part of the full 4-slide collection (Cat. #25445).

Our StarLight™ Collection includes one of each of our StarLight™ Calibration slides, which feature vibrant ~6um fluorescent microspheres dyed with a single fluorophore for basic imaging checks and calibration. The four slides are appropriate for use with common microscope filter sets: Glacial Blue (360, 450), Dragon Green (480, 520), Envy Green (525, 565), and Flash Red (660, 690).

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.

Precision Size Standards are offered in three size groupings: Nanobead, Microbead, and Megabead. They are measured on in-house instruments calibrated with NIST (National Institute of Standards and Technology) Standard Reference Materials. Each product is supplied with a Certificate of Analysis documenting traceability to NIST Standard Reference Materials. The size, standard deviation, coefficient of variation, and lot number are printed on the label for easy reference.