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Harnstoff 99,5, high_purity

Lieferant: VWR Chemicals

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0568-1KGEA 117 EUR InStock
0568-1KG 0568-2.5KG 0568-500G 0568-10KG 0568-12KG 0568-5KG
Harnstoff 99,5, high_purity
Harnstoff
Harnstoff ist gebräuchlich um Nukleinsäuren in der Elektrophorese zu denaturieren. Harnstoff hält RNA in einem hohen Denaturierungsstand. Harnstoff ist ebenso gebräuchlich für die Beschleunigung des Protein K Verdaus.

Effective for maintaining DNA in a highly denatured state during sequencing protocols, urea is also useful for accelerating the activity of Proteinase K digestions. Effectively denatures RNA. For use in nucleic electrophoresis applications.


Formel: NH₂CONH₂
MW: 60.06 g/mol
Siedepunkt: 197
Melting Pt: 132.7 °C
Dichte: 1.34 g/cm³ (20 °C)
Storage Temperature: Raumtemperatur
 MDL Number: MFCD00008022
CAS-Nummer: 57-13-6
EINECS: 200-315-5
REACH: 01-2119463277-33
Merck Index: 13,09935
https://qa.digitalassets.avantorsciences.com/adaptivemedia/rendition?id=e15411388dbf37902174d81572c027dae6d9ccf7&vid=e15411388dbf37902174d81572c027dae6d9ccf7&prid=web&clid=SAPDAM
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Spezifikation Testergebnisse
Abs.@280nm (5M, Wasser) < 0,05
Biuret Test Entspricht
Chlorid ≤ 0,0005%
Cyanat ≤ 0,002%
DNasen Keine nachgewiesen
Schwermetalle (als Pb) ≤ 0,0005%
Unlösliche Bestandteile ≤ 0,005%
Eisen ≤ 0,0001%
Schmelzpunkt 132 - 135°C
Proteasen Keine nachgewiesen
Reinheit ≥ 99,5%
RNasen Keine nachgewiesen
Löslichkeit (5M, Wasser) Entspricht

 

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Ordering

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Should VWR need to supply products and/or services of different specifications, sources, and pack size to that published or ordered by the customer, VWR shall do so only after consultation with and agreement by the customer.

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Notwithstanding the foregoing paragraph, if there is a change of more than 3% to the rate of exchange of Sterling against foreign currencies including, but not limited to, the Euro and US Dollar since the date of receipt of an order then VWR may require the customer to renegotiate the prices relating to the relevant order.  Should VWR and the customer be unable to agree new prices within 7 days of receipt by the customer of a request in writing by VWR to renegotiate the price then VWR may terminate the contract with immediate effect by giving written notice to the customer.

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Payment

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Customers who exceed their credit limits will be asked to pay in advance for additional products and/or services until the account is settled.

VWR may at any time, without limiting any other rights and remedies that it may have, set off any amount owing to it by the customer under the contract against any amount payable by VWR to the customer (whether under the contract or a separate agreement).

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Delivered products will remain the property of   VWR until the customer has paid for them.

VWR has the right to deliver an order in instalments (which may be invoiced and paid for separately). Any delay or defect in an instalment does not give the customer the right to cancel other instalments.

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Any claims for non-ordered items or non-delivery must be made within 7 days of receiving the invoice.

Return of Damaged or Unsuitable Goods

No goods may be returned to VWR without the authorisation of VWR.

Authorisation to return products damaged during delivery must be requested within 3 days of delivery. VWR has the right to repair and return damaged products.

Authorisation for the return of products which fail to meet current published manufacturer’s specifications must be requested in writing within 28 days of delivery. VWR will assist customers, at customers’ expense, to obtain any manufacturer’s warranty consistent with that granted to VWR.

Authorisation for the return of products, other than those damaged during delivery, delivered in error or those that do not meet specification, must be requested within 10 days of delivery. Credit (less a handling charge of 15% of the invoice value of all products returned subject to a minimum charge of £30) will be given for those products authorised for return which are unused and in re-saleable condition other than those in the categories shown:-

  • open chemicals or diagnostics
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Authorisation will be subject to the condition that the products are returned to VWR Customer Service Centre or to the manufacturer or other source and by the method advised by VWR.

Articles that have been delivered on VWR’s behalf by a third-party supplier will not be accepted back at the VWR Customer Service Centre.

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Risk in products will pass at the time of delivery to the customer.
The customer is responsible for unloading and transporting large and/or heavy items from delivery vans and for supervising the unloading of all other products delivered.

In view of the hazards of certain chemicals and apparatus the customer must ensure that the products purchased are in a safe condition and that a safe system of work is in place taking into account all available information. None of the products sold are intended for human consumption unless otherwise clearly stated.
In view of the wide range of uses of chemicals and apparatus, the customer will be solely responsible for determining the suitability and specification of products, services, information and advice for its purposes.

Nothing in this contract shall limit or exclude VWR’s liability for death or personal injury caused by its negligence, fraud, fraudulent misrepresentation, or any other matter in respect of which it would be unlawful for VWR to exclude or restrict liability. Subject to this, in view of the responsibilities of the customer set out in the above paragraphs:

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Any liability accepted by VWR under this contract is in lieu of any terms implied by law as to the quality or fitness for any particular purpose of the products and/or the standard of the services and all such implied terms are, to the fullest extent permitted by law, excluded from the contract between VWR and the customer. The customer shall indemnify VWR against any claims made against VWR by the customer’s employees, contractors or agents.

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Termination

Without limiting its other rights and remedies, VWR may terminate the contract with immediate effect or suspend deliveries of the products, by giving written notice to the customer if the customer has failed to pay any amount owed to VWR on its due date for payment and remains in default for 14 days after notification to make payment, or if the customer has suffered or is likely to suffer an insolvency event or its financial position deteriorates to such an extent that in VWR’s opinion, the customer’s capacity adequately to fulfill its obligations under the contract is in question.

On termination of the contract for any reason the customer shall immediately pay to VWR all of its outstanding unpaid invoices and interest.

Confidentiality

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Governing law

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