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Product Image-VWRC88273.001

VWR®, Osmolality standards

Supplier: VWR Chemicals
Description: Avantor now offers a comprehensive range of osmolality standards as Certified Reference Materials (CRM) for the calibration of osmometers.

Intended use:

MSDS Certificates

Image Unavailable-REGERE-OSM-900

Osmolality standards

Supplier: REAGECON
Description: Osmolality standards provide ease of use when calibrating all types of osmometers. All Osmolality standards are manufactured using high purity raw materials. These products are prepared gravimetrically on a weight/weight basis. Both solute (salts) and solvent (water) are weighed on a balance calibrated by using OIML traceable weights.

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Image Unavailable-ICNA0219485791

Urea ≥98%, white powder for molecular biology

Supplier: MP Biomedicals
Description: Applications:
Urea is used for the denaturation of proteins and as a mild solubilization agent for insoluble or denatured proteins. Useful for renaturing proteins from samples already denatured with 6 M guanidine chloride such as inclusion bodies and in the extraction of the mitochondrial complex. It is commonly used to solubilize and denature proteins for denaturing isoelectric focusing and two-dimensional electrophoresis and in acetic acid-urea PAGE gels. May be used with guanidine hydrochloride and dithiothreitrol (DTT) in the refolding of denatured proteins into their native or active form. Urea is used in cell or tissue culture media to increase the osmolality. Urea has also been used as fertilizer because of the easy availability of nitrogen; in animal feeds; it is reacted with aldehydes to make resins and plastics; condensed with malonic ester to form barbituric acid; used in the paper industry to soften cellulose.
Biochem/physiol Actions:
Urea has been shown to act as an aldosterone antagonist in the development of peanut agglutinin binding in cultured embryonic renal collecting duct epithelial cells. Urea is the principal end product of nitrogen metabolism in most mammals, formed by the enzymatic reactions of the Kreb's cycle.
Typical Working Concentration:
The use of 2 g/L urea in the culture of Kluyveromyces marxianus to produce a thermostable extracellular lipase has been described. Urea is typically used at a concentration of 8 M for protein denaturation or solubilization. A final concentration of 5 M urea is commonly used in molecular biology for sequencing gels. To prevent carbamylation, do not heat urea containing buffers above 37 °C

Product Image-VWRC85001.180

VWR®, Triethanolamine 1000 mg/l in water standard for ion chromatography

Catalog Number: (VWRC85001.180)
Supplier: VWR Chemicals
Description: Amine Standard, Triethanolamine standard, 1000 mg/L, VWR®, Matrix: H₂O, Application: Ion chromatography standards
UOM: 1 * 100 mL

MSDS Certificates


Product Image-VWRC88084.180

VWR®, Standard solution (250 ppm NH₄) for the preparation of Ammonium standard solution (2.5 ppm NH₄) Reag.Ph.Eur.; 5000301

Catalog Number: (VWRC88084.180)
Supplier: VWR Chemicals
Description: Ammonium Standard, Ammonium standard solution, 250 mg/L, VWR®, Matrix: H₂O
UOM: 1 * 100 mL

MSDS Certificates


Product Image-VWRC86686.260

VWR®, Potassium standard solution, 1,000 mg/L K in dilute nitric acid AVS TITRINORM standard for AAS

Supplier: VWR Chemicals
Description: Potassium Standard, 1000 mg/L, VWR®, Potassium, Matrix: 2% HNO₃, Application: AAS standards

MSDS Certificates

Product Image-VWRC86665.260

VWR® AVS TITRINORM, Beryllium Standard Solution, 1000 mg/L Be in 2% Hydrochloric Acid, Standard for AAS

Supplier: VWR Chemicals
Description: Beryllium Standard, 1000 mg/L, VWR® AVS TITRINORM, Beryllium, Matrix: 2% HCl, Application: AAS standards

MSDS Certificates

Product Image-VWRC457371K

VWR®, Palladium standard solutions for ICP-MS, ARISTAR®

Supplier: VWR Chemicals
Description: Palladium Standard, 10 ppm, VWR®, Palladium, Matrix: 2% HNO₃, Application: ICP-MS standards

MSDS Certificates

Product Image-VWRC456842P

VWR® ARISTAR®, Phosphorus Standard Solutions for ICP-MS

Supplier: VWR Chemicals
Description: Phosphorus Standard, 10 ppm, VWR® ARISTAR®, Phosphorus, Matrix: H₂O, Application: ICP-MS standards

MSDS Certificates

Product Image-VWRC86722.260

VWR®, Tungsten standard solution, 1000 mg/L W in nitric acid with hydrofluoric acid (each max. 1%) AVS TITRINORM standard for AAS

Supplier: VWR Chemicals
Description: Tungsten Standard, 1000 mg/L, VWR®, Tungsten, Matrix: 1% HNO₃/2% HF, Application: AAS standards

MSDS Certificates

Product Image-VWRC85641.180

VWR®, Uranium standard solutions for ICP-MS, ARISTAR®

Catalog Number: (VWRC85641.180)
Supplier: VWR Chemicals
Description: Uranium Standard, 10 ppm, VWR®, Uranium, Matrix: 2% HNO₃, Application: ICP-MS standards
UOM: 1 * 100 mL

MSDS Certificates


Product Image-VWRC457268H

ARISTAR®, Europium Standard Solutions for ICP-MS

Supplier: VWR Chemicals
Description: Europium Standard, 10 mg/L, VWR® ARISTAR®, Europium, Matrix: 2-5% HNO₃, Application: ICP-MS standards

MSDS Certificates

Product Image-VWRC456672P

ARISTAR®, Bismuth Standard Solutions for ICP-MS

Supplier: VWR Chemicals
Description: Bismuth Standard, 10 ppm, VWR® ARISTAR®, Bismuth, Matrix: 2-5% HNO₃, Application: ICP-MS standards

MSDS Certificates

Product Image-VWRC86683.260

VWR®, Holmium standard solution, 1,000 mg/L Ho in dilute nitric acid AVS TITRINORM standard for AAS

Supplier: VWR Chemicals
Description: Holmium Standard, 1000 mg/L, VWR®, Holmium, Matrix: Nitric acid dil., Application: AAS standards

MSDS Certificates

Product Image-VWRC86695.260

VWR® AVS TITRINORM, Neodymium Standard Solution, 1000 mg/L Nd in dil. Nitric Acid, Standard for AAS

Supplier: VWR Chemicals
Description: Neodymium Standard, 1000 mg/L, VWR® AVS TITRINORM, Neodymium, Matrix: 2% HNO₃, Application: AAS standards

MSDS Certificates

Product Image-VWRC86677.260

VWR® AVS TITRINORM, Iron Standard Solution, 1000 mg/L Fe in 2% Hydrochloric Acid AVS TITRINORM Standard for AAS

Supplier: VWR Chemicals
Description: Iron Standard, 1000 mg/L, VWR® AVS TITRINORM, Iron, Matrix: 2% HCl, Application: AAS standards

MSDS Certificates

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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 at +65 6505 0760.
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 at +65 6505 0760.
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR at sales@sg.vwr.com
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This product is no longer available. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service at +65 6505 0760.
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