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Cell Counting Kit-8 (CCK-8)

In stock
Catalog No.
Used in cell proliferation assay and cytotoxicity assay
Grouped product items
SizePriceStock Qty
1x1ml (100 tests)
In stock
1x5ml (500 tests)
In stock
2x5ml (1000 tests)
In stock
6x5ml (3000 tests)
In stock
20x5ml (10000 tests)
In stock

Tel: +1-832-696-8203

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Related Biological Data

Cell Counting Kit-8 (CCK-8)

Related Biological Data

Cell Counting Kit-8 (CCK-8)

Related Biological Data

Cell Counting Kit-8 (CCK-8)

Components and storage

100 tests 1x1ml
500 tests 1x5ml
1000 tests 2x5ml
3000 tests 6x5ml
10000 tests 20x5ml
CCK-8 is stable exceeding one year at 0-5°C with protection from light. For longer storage, store it at -20°C. Repeated thawing and freezing will cause an increase in the background, which will interfere with your assay. Please store the kit at 0-5°C for frequent use.


Our product Cell Counting Kit-8 (CCK-8) provide a more convenient and sensitive method for the research of cell number determination and cell proliferation/cytotoxicity assay than previous ways. The kit utilizes a highly water-soluble tetrazolium salt, WST-8, which produces a water-soluble formazan dye upon reduction in the presence of an electron mediator. The amount of the formazan generated by dehydrogenases is directly in proportion to the numbers of living cells. The detection sensitivity by CCK-8 is higher than other tetrazolium salts such as MTT, XTT, MTS or WST-1.


More Sensitive than MTT, MTS, or WST-1

No Toxicity to Cell

Simpler Steps, No organic solvents required

Stable One Bottle Solution, ready-to-use