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Fehling B

Fehling B

Product Code : JL-LE-11185

Fehling B (SKU JL-LE-11185, Model No. JL633/0128) is the colourless alkaline solution of sodium potassium tartrate that completes Fehling reagent, supplied by JaincoLab as an analytical reagent with an MSDS. The tartrate holds the copper ions from Fehling A in solution under alkaline conditions, so that a reducing sugar can convert them to red copper(I) oxide.

Specifications

Reagent details from the listing:

ProductFehling B
SKUJL-LE-11185
Model No.JL633/0128
Main componentsSodium potassium tartrate with sodium hydroxide
GradeAnalytical reagent
Safety dataSupplied with MSDS; handle as per the supplied safety data
Shelf lifeExpires after 5 years
Bottle sizeConfirmed on the quotation

Scope of supply and ordering

Bottle size and quantity of Fehling B, normally ordered in pairs with Fehling A, are set out on the quotation.

Frequently asked questions

What does Fehling B contain?
Sodium potassium tartrate (Rochelle salt) in sodium hydroxide solution.

How much of each solution is used?
Equal volumes of Fehling A and Fehling B are mixed just before the test.

Related products

More reagents are listed in our laboratory equipment range.

Request a quote

Enquire about Fehling B through the contact page. Tender and project enquiries can be sent through the tenders page.

Last updated: September 2026

   
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2475-84, Hargolal Road,
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