Question 1

What is the catalog number for Span 40?

Accepted Answer

The catalog number for Span 40 is S4590.

Question 2

What sizes are available for Span 40?

Accepted Answer

Span 40 is available in the following size(s): 100 g, 500 g.

Question 3

How many pack sizes does Span 40 come in?

Accepted Answer

Span 40 is available in 2 different pack sizes.

Question 4

Is Span 40 in stock?

Accepted Answer

Span 40 is currently made to order / not held in immediate stock. Contact us for lead time.

Question 5

What temperature does this product ship at?

Accepted Answer

Shipping temperature is chosen based on the product’s stability needs, ranging from ambient to dry ice, and is indicated on the product page. Any related shipping fee is shown clearly in your quotation.

Question 6

What is the molecular weight of the target protein?

Accepted Answer

Molecular weight information, where applicable, is listed on the datasheet under target details, useful for confirming the correct band on western blot.

Question 7

How long will it take to receive this product if it’s custom made?

Accepted Answer

Lead times depend on the product type: custom polyclonal antibodies typically take 12-14 weeks, monoclonal antibodies 15-17 weeks, made-to-order recombinant proteins 4-8 weeks, and made-to-order recombinant antibodies 6-8 weeks. These are estimates and may shift due to production delays.

Span 40

Product Specifications

CAS Number

Available Sizes

Frequently Asked Questions

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