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Catalog Number: (31659-100MG)
Supplier: Merck
Description: o-Tolidine, Supelco®
UOM: 1 * 100 mg


Supplier: SIGMA ALDRICH MICROSCOPY
Description: o-Tolidine is a diacidic dye which is sparingly soluble in water and easily soluble in ether and alcohol. On exposure to chlorine or bromine vapors, it forms an intense blue color. This forms the basis for detection of chlorine, nitrates and hydrogen peroxide in air or water. It turns yellow on reacting with free chlorine. o-Tolidine easily forms acid salts.

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Catalog Number: (28672.294)
Supplier: VWR Chemicals
Description: Determination of oxygen or free chlorine
UOM: 1 * 1 L

Catalog Number: (87971.260)
Supplier: VWR Chemicals
Description: o-Tolidine 0.03% with 0.2% potassium iodide in acetic acid 6% Reag. Ph. Eur. 1123001
UOM: 1 * 500 mL

Supplier: Thermo Fisher Scientific
Description: o-Tolidine 95% pract.
Supplier: Thermo Scientific
Description: o-Tolidine ≥98%
Supplier: SIGMA ALDRICH MICROSCOPY
Description: Trypan blue is a tetrasulfonated anionic, hydrophilic azo dye derived from toluidine. The non-permeable cell membrane dye is a vital dye that selectively stains dead or non-viable cells, that pass through damaged but not through intact cell membranes.

Supplier: SIGMA ALDRICH MICROSCOPY
Description: Trypan Blue (C.l. 23850) is a large, tetrasulfonated anionic, hydrophilic dye. It is also known as diamine blue 3B. Trypan blue has been used as a dye in trypan blue exclusion assay/cell viability assay to detect dead cells.

Supplier: Thermo Scientific
Description: 4,4'-Bi-o-toluidine dihydrochloride ACS
Supplier: Thermo Scientific
Description: Trypan blue
Supplier: Thermo Scientific
Description: Trypan blue 60% (dye content)
Catalog Number: (K940-100ML)
Supplier: VWR Chemicals
Description: A pre-mixed dye solution used in cell culture applications to determine cell viability. A researcher can remove a sample of cells from culture and combine in a 1:1 ratio with the Trypan Blue solution. Under the microscope, dead cells will appear a blue color and viable cells will appear clear and translucent. Using a hemacytometer (gridded microscope slide), a researcher can quantify the percentage of dead cells within a population. Stained cells are ready for counting within five minutes.
UOM: 1 * 100 mL

Supplier: Thermo Scientific
Description: 4,4'-Bi-o-toluidine dihydrochloride ≥97%
Supplier: Thermo Fisher Scientific
Description: 4,4'-Bi-o-toluidine dihydrochloride 99%
Supplier: KOEHLER TECHNISCHE PRODUKTEN
Description: Trypan blue

Catalog Number: (AATB2450)
Supplier: AAT BIOQUEST
Description: Trypan blue, a diazo dye is a vital stain that colors dead tissues or cells blue.
UOM: 1 * 100 g


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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222.
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR Regulatory Department at eurega_services@eu.vwr.com
-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organisation. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
Product(s) marked with this symbol are discontinued - sold till end of stock. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service on +353 1 8822222.
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