Color Prestained Protein Standard, Broad Range (11–245 kDa)

1. To maximize shelf life, store at -20°C. Guaranteed stable for 2 years when properly stored.
2. Apparent molecular weight values for prestained proteins can bedifferent when run on different gel types and percentages. Severalcommonly-used gels were tested and the results can be found in theFrequently Asked Questions (FAQ) section of the product page.
3. It is important to note that the Color Protein Standard, Broad Range does not have a dye front indicating that the gel is near completion. Please monitor the gel carefully to ensure that the lower molecular weight bands are not accidentally run off the gel.

1. Ma, D. and Xu, MQ. New England Biolabs, Inc. Unpublished observation
2. Laemmli, UK. (1970). Nature. 227, 680.
3. Sambrook, J., Fitsch, EF. and Maniatis, T. (2001). Molecular Cloning: A Laboratory Manual. (3rd ed.), Cold Spring Harbor: Cold Spring Harbor Laboratory Press..

1. Protocol for Using the Color Prestained Protein Standard, Broad Range (P7712) for an SDS-PAGE Mini Gel

1. I notice that the molecular weights I am observing are slightly different than those reported. Can you explain?
2. What volume of Color Prestained Protein Standard, Broad Range (11-245 kDa) is supplied in a small pack (P7712S) and a large pack (P7712L)?
3. I accidentally left my Protein Standard out at room temperature for a number of days. Is it still okay to use?

Quality Control tests are performed on each new lot of NEB product to meet the specifications designated for it. Specifications and individual lot data from the tests that are performed for this particular product can be found and downloaded on the Product Specification Sheet, Certificate of Analysis, data card or product manual. Further information regarding NEB product quality can be found here.

Specifications & Change Notifications

The Specification sheet is a document that includes the storage temperature, shelf life and the specifications designated for the product. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]

• P7712S_L_v1

The Certificate of Analysis (COA) is a signed document that includes the storage temperature, expiration date and quality controls for an individual lot. The following file naming structure is used to name these document files: [Product Number]_[Size]_[Version]_[Lot Number]

• P7712S_L_v1_0101703
• P7712S_L_v1_0111703
• P7712S_L_v1_0111709
• P7712S_v1_10009616
• P7712L_v1_10009903
• P7712S_v1_10016567
• P7712S_v1_10028238
• P7712S_v1_10035044
• P7712L_v1_10035045

The following is a list of Safety Data Sheet (SDS) that apply to this product to help you use it safely.

• Color Prestained Protein Standard, Broad Range (11–245 kDa)

This product is covered by one or more patents, trademarks and/or copyrights owned or controlled by New England Biolabs, Inc (NEB).

While NEB develops and validates its products for various applications, the use of this product may require the buyer to obtain additional third party intellectual property rights for certain applications.

For more information about commercial rights, please email us at [email protected].

This product is intended for research purposes only. This product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.

New England Biolabs (NEB) is committed to practicing ethical science – we believe it is our job as researchers to ask the important questions that when answered will help preserve our quality of life and the world that we live in. However, this research should always be done in safe and ethical manner. Learn more.