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TOX4

Sigma-Aldrich

In Vitro Toxicology Assay Kit, Neutral Red based

Synonym(s):

NR uptake assay, Neutral red assay

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About This Item

UNSPSC Code:
12352207
NACRES:
NA.84

form

liquid

usage

 kit sufficient for 1,000 tests

packaging

pkg of 1 kit

storage condition

dry at room temperature

λmax

540 nm

application(s)

cell analysis
detection

detection method

colorimetric

storage temp.

2-8°C

Related Categories

General description

For spectrophotometric measurement of viable cells. Absorbance of converted dye is measured at a wavelength of 540 nm.

Application

In Vitro Toxicology Assay Kit, Neutral Red based has been used:
  • to measure the lysosomal enzyme activity in HB8902 cells
  • to study the cell viability of human alveolar epithelial cells
  • to study the cell viability in fibroblasts

Biochem/physiol Actions

Neutral red (NR) is a red dye that accumulates in the lysosome by actively transferring across the cell membranes. The dye is extracted and the uptake is quantitated by spectroscopy. The NR uptake assay is the most commonly used cytotoxicity test. It is widely applicable in environmental and biomedical studies to estimate the number of viable cells in culture. The NR dye in vitro tissue culture studies is used in assessing viral cytopathogenicity and detection of toxic compounds.

Signal Word

Danger

Hazard Statements

Hazard Classifications

Carc. 1B - Flam. Liq. 3 - Skin Sens. 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

73.4 °F

Flash Point(C)

23 °C


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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