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Posts tagged ‘MacConkey Agar’

New Agars

Spectrum Scientifics has long sold Nutrient Agar to its customers, either in bottle form or in kits. The basic nutrient agar is excellent for bacteria growing experiments for school students. All one needs to do is heat of the agar (a double boiler works great). Pour it into some Petri dishes and swab in the material to be tested!

Nutrient Agar

Nutrient Agar

But there are more folks out there than just students, and they have some very specific needs for growing bacteria, etc. These folks work in labs and have important experiments to run, so not only do they need special Agars they also don’t have time to melt the agar down!

Hence why we now have prepared plates of specialty Agar!

Prepared plate of MacConkey Agar

Prepared plate of MacConkey Agar

These prepared plates are sold in packs of 10. Being prepared means they are ready to go from when you open the box or take them out of the lab’s fridge.

Each different Agar serves a different use:

MacConkey Agar – Is used to grow Gram-negative bacteria for lactose fermentation – useful for the cheesemakers.

Potato Dextrose Agar – Is used to grow the bacteria that attack living and decaying plant matter. It is also used for cultivating & isolating yeasts and molds from dairy.

Sabouraud Dextrose Agar – is used to cultivate bacteria that have low resistance to antibiotics. It is also used in the cosmetics and food industries to determine microbe content.

Standard Methods Agar – Is used to get microbial counts in water, wastewater, milk, and other liquids. This agar has American Public Health Standards (APHS) to meet (and it does meet them) to be used in this capacity.

Tryptic Soy Agar with 5% sheeps blood.  – This is for growing various pathogens without needing to add extra blood proteins.

Tryptone Glucose Extract Agar – Used primarily for detecting bacterias in milk and other dairy, this is another agar that must meet APHS standards in order to be sold (and it does!)

These prepared Agar plates are shipped on ice and require 4-5 days prep time (they are made on demand).

We have many other Agars, both bottled and plated, available to us. Contact us to see if we can fill your needs!