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Description
R2A AgarR2A Agar R2A Agar medium is used for the detection of bacteria in water, especially in treated potable water. This is a low nutrient medium in which a combination of longer time and lower temperature of incubation promotes the growth of stressed and chlorine treated bacteria. Enzymatic Digest of Casein and Animal Tissue provide nitrogenous sources for bacterial growth. Yeast Extract supplies B complex vitamins and serves as growth enhancer. Dextrose
R2A Agar
R2A Agar medium is used for the detection of bacteria in water, especially in treated potable water. This is a low-nutrient medium in which a combination of longer time and lower temperature of incubation promotes the growth of stressed and chlorine-treated bacteria. Enzymatic Digest of Casein and Animal Tissue provide nitrogenous sources for bacterial growth. Yeast Extract supplies B-complex vitamins and serves as growth enhancer. Dextrose is the fermentable carbohydrate. Soluble starch serves as neutralizer, while Sodium Pyruvate stimulates the growth of stressed bacteria. Dipotassium Phosphate and Magnesium Sulfate Heptahydrate act as pH buffers. Agar is the gelifying agent. There is a choice of 3 sizes - 500g, 2kg, and 10kg.
PREPARATION: Mix 18.2 grams of the medium in one liter of purified water until evenly dispersed. Heat with repeated stirring to dissolve completely. Autoclave at 121°C for 15 minutes.
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4.2 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 1
If you love your dog…don’t buy this.
Color: Orange
We have a nonaggressive English cocker. She opened the ball every time she played with it. And yes, we are closing it as hard as we can. I do not recommend this toy for any dog! This is a dangerous toy for a dog that is not supervised.
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Reviewed in the United States on March 16, 2026
★★★★★ 4
Keeps your dog busy
Color: Blue
Good toy to keep your dog busy. Make sure you check it periodically to ensure it stays together.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
dog ball
Color: Blue
This ball is perfect for keeping my dog active and entertained. It's made of strong, durable material, ideal for games of fetch. It doesn't break easily and is light enough for him to carry in his mouth without any problem.
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Reviewed in the United States on February 23, 2026
★★★★★ 2
Fun but not for rough play.
Color: Orange
The ball contented our “golden” Jaxson for about 15 minutes. He then thought it was a regular ball and it’s just a little delicate for a big dog. I just wrote it off as a loss. Great idea but should be more durable.
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Long lasting charge!
Color: Orange
My 50 pound goldendoodle absolutely loves this ball. It keeps a charge for a long time. It turns off
When it’s not being used and we play with it every day.!
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Reviewed in the United States on March 24, 2026