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Supplier: MP Biomedicals
Description: Storage: Store at -20 °C. Store Desiccated. Store Under Nitrogen. Protect from light.
5-Bromo-4-chloro-3-indolyl β-D-galactopyranoside, commonly known as X−Gal, is a histochemical substrate for β−galactosidase.
5-Bromo-4-Chloro-3-Indolyl-β-D-Galactopyranoside is used as indigogenic substrate for β-galactosidase, for detection of β-galactosidase-positive clones, and the identification of lac and bacterial colonies or phage plaques. It is the substrate of choice for blue-white selection of recombinant bacterial colonies with the lac+ genotype. X−Gal is cleaved by β−galactosidase to yield an insoluble blue precipitate. X−Gal is particularly useful in molecular biology applications to detect the activity of β−galactosidase which is frequently used as a reporter gene. In cloning, X−Gal is used to detect insertion of foreign DNA into the lacZ region of plasmid DNA using α-complementation which is based on vectors such as the pUC and the M13mp series that carry a fragment of the β-galactosidase gene encoding an α-fragment of β-galactosidase.

Supplier: HONEYWELL SAFETY
Description: These disposable overalls made of PP laminated with a microporous PE film are designed to protect against particles contamination and chemical splashes.

Supplier: MP Biomedicals
Description: Applications
Guanidine hydrochloride can be used as the first step in refolding proteins or enzymes into their active form. Urea and dithiothreitol (DTT) may also be necessary. Also used in the isolation of RNA. It is a strong chaotropic agent useful for the denaturation and subsequent refolding of protein, it can solubilize insoluble or denatured proteins such as inclusion bodies and be used for the recovery of periplasmic proteins. This can be used as the first step in refolding proteins or enzymes into their active form. Urea and dithiothreitol (DTT) may also be necessary. Also used in the isolation of RNA.
Product Description
The crystal structure of Guanidine hydrochloride consists of a network of guanidinium cations and chloride anions linked by N–H•••Cl hydrogen bonds,it is a strong chaotropic agent.Guanidine HCl may agglomerate upon storage. It may appear as a free-flowing crystalline powder, a freeflowing powder with solid material dispersed throughout, or a solid. The quality of the product does not appear to be affected and solutions prepared from the free-flowing and lumpy guanidine HCl appear identical

Grade: Ultra Pure
Purity: >99%
Keywords: Guanidium chloride, chaotropic agent
Key Applications: Chaeotropic agent
Product Type: Biochemicals
Biochemical Category: Chaotropic Agents
Density: 1.345 g/cm³ at 20 °C (Lit.)
Melting Point: 180-190 °C
UV/Visible Absorbance: OD260nm (6.0 M aq soln) <0.03
Presentation: White Crystalline Powder
pH: 4-6 (6.0 M aq soln)
Solubility: Soluble in water,Clear, Colorless Solution (6 M - clear, colorless solution).
Storage & Handling: Room Temperature, desiccate
Supplier: Liebherr
Description: Glass/steel door high-volume refrigerators with forced air cooling. White steel exterior and stainless-steel interior. Choose between two temperature stability options to suit differing lab requirements. The intuitive user interfaces provide useful extended multi-functionality, e.g. a maintenance timer, and the LED interior lighting ensures good visibility of the contents of these large appliances. Advanced connectivity options to suit varying requirements for simplified data storage, temperature control and alarm signals. These advanced lab fridges also feature a +2 °C safety device to protect sensitive contents from freezing.

New Product

Supplier: VWR Collection
Description: Accessory for UV/Visible spectrophotometers, Deuterium lamp, VWR®, For: V-1200, UV-1600PC, UV-3100PC

Supplier: HONEYWELL SAFETY
Description: These polyester/cotton knitted gloves with PVC dot coating on both sides are ideal for the handling of dry and slippery parts.

Supplier: Basan
Description: Size adjustment type protection cap with the size adjustable head band, light weight (general: 107 g, extra-large: 120 g). It is washable, simple treatment, little dust and may put on under the hood or the hat. Can adjust the depth.

Supplier: Merck
Description: The Spectroquant Prove 100/300/600 plus provides high quality and great value for money for your daily analyses.

Catalog Number: (634-1230)
Supplier: VWR Collection
Description: The P6 UV/Visible single beam spectrophotometer is an easy to use instrument with advanced performance.
UOM: 1 * 1 items


Catalog Number: (634-1240)
Supplier: VWR Collection
Description: Accessories for VWR® M9 UV/Visible Spectrophotometer
UOM: 1 * 1 items

New Product


Supplier: MAPADA
Description: Accessory for UV/Visible spectrophotometers, Flashing xenon lamp, VWR®

Catalog Number: (ZVGA10160-00)
Supplier: Zellstoff-Vertriebs-GmbH & Co. KG
Description: These solvent resistant wipes made of 100% PP are suitable for wet wiping in a variety of applications.
UOM: 1 * 420 items


Catalog Number: (634-6041)
Supplier: VWR Collection
Description: UV/Visible spectrophotometer with double-beam optical system, designed for applications including general research, pharmaceutical, biochemical and clinical laboratory use, new material development and quality control.
UOM: 1 * 1 items


Supplier: VWR Collection
Description: Accessories for UV-Visible/NIR Spectrophotometer, UH5700

New Product

Supplier: TRIUS SAFETY
Description: Universal light nitrile coated glove designed for routine handling in wet or greasy environments.

Supplier: VWR Collection
Description: UV/Visible spectrophotometer

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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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