Benedict's Reagent Recipe or purchase

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ritacrem
Posts: 21
Joined: 22 Aug 2015, 09:49
Job Title: Lab Assistant
School: Carroll College
Suburb: Broulee
State/Location: NSW

Benedict's Reagent Recipe or purchase

Post by ritacrem »

Just wondering in my ignorance (new to the job) do you make up Benedict's Reagent or do you buy it made up? If you make it up does anyone have a recipe to follow please ?
Thanks in advance for your help
Rita :crazy:
Merilyn1
Posts: 1477
Joined: 12 Mar 2013, 08:10
Job Title: Labbie
School: Wollondilly Anglican College
Suburb: Tahmoor
State/Location: NSW

Re: Benedict's Reagent Recipe or purchase

Post by Merilyn1 »

I buy it ready-made.
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Labbie
Posts: 3237
Joined: 28 Nov 2006, 10:00
Job Title: Retired
Suburb: At Home
State/Location: NSW

Re: Benedict's Reagent Recipe or purchase

Post by Labbie »

Buy it ready made.
Regards Labbie

Lab Manager/Lab Tech, mind reading etc etc
Now retired :wub:
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Whspa
Posts: 345
Joined: 01 Jun 2006, 10:00
State/Location: NSW

Re: Benedict's Reagent Recipe or purchase

Post by Whspa »

I buy it too, but "The Laboratory" has the following method for preparation.

17.3g copper (II) sulfate, hydrated
100g sodium carbonate, anhydrous
173g sodium citrate, hydrated
1L distilled water
1. Dissolve sodium carbonate and citrate in approx 750mL distilled water by warming. Filter.
2. Dissolve copper sulfate in approx 100mL cold distilled water.
3. Pour the citrate-carbonate solution into a large beaker and add the copper sulfate solution slowly with constant stirring.
4. Make up the total volume to 1L with distilled water.
ritacrem
Posts: 21
Joined: 22 Aug 2015, 09:49
Job Title: Lab Assistant
School: Carroll College
Suburb: Broulee
State/Location: NSW

Re: Benedict's Reagent Recipe or purchase

Post by ritacrem »

Thanks heaps - Thinking buying it might the the best option.
You guys are amaing to respond so quickly.
:clap3:
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