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G1910 Sigma

Gelzan CM

Gelrite®

Synonym: Agar substitute gelling agent, Gellan Gum

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Properties

Related Categories Gelling Agents, Molecular Biology, Plant Biotechnology, Plant Tissue Culture
Featured Industry   Agriculture

Description

Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Packaging

1, 5 kg in poly drum

250 g in poly bottle

Application

Gelrite, gellan gum, is recommended as a gelling agent for use in place of agar in microbiological media. Gellan gum is used in a wide variety of immobilization matricies.

Legal Information

Gelrite is a registered trademark of CP Kelco U.S., Inc.

Gelzan is a trademark of CP Kelco U.S., Inc.

Price and Availability

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
2

Documents

Certificate of Analysis

Certificate of Origin

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the difference between Product G1910, Gelzan CM and Gelrite?
The products are chemically the same. However, Gelzan CM is produced through a new and more efficient process. There are some slight differences in the specifications of the two products.
What is Product G1910, Gelzan CM?
It is a low-acyl gellan gum used as a gelling agent in both microbiological assay media and tissue culture.
Does Product G1910, Gelzan CM, have an expiration date?
The lots of this product are not assigned expiration dates. The guarantee of quality is one year from the time of delivery for unopened bottles stored at room temperature. General information on product dating is in the link:<rn:answer_xref style="TEXT-INDENT: 0in" title="Product Dating" target="_self" contents="http://www.sigmaaldrich.com/content/dam/sigma-aldrich/docs/Sigma-Aldrich/General_Information/product-dating-information-statement-v5.pdf" answer_id="2510" />
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
How do I use Product G1910, Gelzan™ CM?
The G1910 is added to well-stirred water, and the dispersion heated to 85-90°C to ensure full hydration. To form a gel, the necessary amount of electrolyte, such as potassium citrate or calcium chloride, is added to the solution at 85°C and the mixture is poured or pumped into containers and allowed to cool undisturbed. The product is biodegradable, so a biocide is recommended. The typical use level is 0.2 to 2.0%.
Is Product G1910, Gelzan™ CM, different that Gelrite?
The G1910 is chemically the same as Gelrite, which is no longer produced. Both items are trademarked to CP Kelco U.S., Inc. They are both Gellan Gum, but the manufacturer has different specifications for these items.
What is the gel strength of Product G1910, Gelzan™ CM?
The gel strength as determined by the vendor is between 400-700 g/cm2.
What is the particle size of Product G1910, Gelzan™ CM?
The vendor supplied particle size is 42 mesh, or about 355 µm, with a specification of not less than 95% through. This means that at least 95% of the particles should be smaller than 355 microns in diameter.
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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