MacConkey Agar
SKU: 53269593368

MacConkey Agar

$140.98 $156.64
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Description

MacConkey AgarMacConkey Agar MacConkey Agar is a solid medium recommended for the cultivation of Gram negative, lactose fermenting enteric bacteria in samples of water, milk, and foods. MacConkey Agar is used for the isolation and differentiation of the coliform organisms and enteric pathogens based upon the fermentation of Lactose. This formulation is an improvement on the original. Modifications were made to improve the growth of Salmonella and Shigella strains.

MacConkey Agar

 MacConkey Agar is a solid medium recommended for the cultivation of Gram-negative, lactose-fermenting enteric bacteria in samples of water, milk, and foods. MacConkey Agar is used for the isolation and differentiation of the coliform organisms and enteric pathogens based upon the fermentation of Lactose. This formulation is an improvement on the original. Modifications were made to improve the growth of Salmonella and Shigella strains. MacConkey Agar contains Crystal Violet and Bile Salts that inhibit Gram-positive organisms and allow Gram-negative organisms to grow. Due to the presence of the Neutral Red pH indicator, coliforms that ferment Lactose turn dark red to purple color while non-fermenters are colorless. There is a choice of 3 sizes - 500g, 2kg, and 10kg.

PREPARATION: Mix 50 grams of the medium in one liter of purified water until evenly dispersed. Heat with repeated stirring and boil for one minute to dissolve completely. Distribute and autoclave at 121°C for 15 minutes.

Additional Literature:

M13-106 Product Information

M13-106 Safety Data Sheet

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SKU: 53269593368

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4.1 ★★★★★
Based on 1115 reviews
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K
Verified Purchase
Kira Krall
Chelsea, US
★★★★★ 5
returned- for now
Style: Updated Formula
I was using the lotion version of this for about a year, then went to the balm for more hydration. However, it seems to be breaking me out. I think because it's spring, im not needing as much occlusion as i did during winter. I'm gonna go back to the lotion formula, then pick this up again next winter. It is a little hard to spread, but I spray the avene mineral water on, let it dry slightly, and press the balm into my skin when its still wet. That helps thin the balm just enough to rub in. Otherwise, it can actually feel kind of rough!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
T
Verified Purchase
tortoisegirl
Waukegan, US
★★★★★ 5
Impressive
Style: Updated Formula
Nice thick cream! I even saw results (skin improvement) within days. I like this way better than their Cicalfate+, as it’s easier to rub in, less greasy, and doesn’t have the water vs cream separation issue. I’m not a huge fan of the pump top for this one, but at least it’s a tube instead of a solid canister (where you can’t see how much is left or get to the last bit).
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Reviewed in the United States on February 26, 2026
J
Verified Purchase
Jj
Lake Worth, US
★★★★★ 3
Not Hydrating Enough
Style: Updated Formula
Non greasy but is not moisturizing enough for my dry eczema prone skin.
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Reviewed in the United States on May 23, 2026
N
Verified Purchase
nicolehedge
Draper, US
★★★★★ 5
Miracle cream
Size: 13.5 Ounce (Pack of 1)
I have been having crazy acne due to a severe reaction to salicylic acid, among other things. My face was incredibly inflamed, itchy, sensitive, red and painful. My dermatologist started me on an oral antibiotic and a clindamycin/benzoyl peroxide topical. The topical was still drying me out quite a bit so I got this lotion and it's literally a miracle cream. My skin is hydrated, no itchy or stinging and the redness has gone down so much. It's also helping my open sores to heal more quickly. Yes, it's a combination of all 3 products working together but I can definitely see and feel the cream repairing my skin barrier. I will be starting on accutane after a month of antibiotics and will continue to use this balm to keep me from drying up like a prune.
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Reviewed in the United States on May 6, 2026
M
Verified Purchase
M. Prieto
Waukegan, US
★★★★★ 5
Works amazing! My eczema is clearing up on my face!
Size: 13.5 Ounce (Pack of 1)
I've been struggling with eczema all of my life and I'm insanely sensitive to all sorts of creams. I've tried just about everything you could find. Colloidal oatmeal ones...to hypo allergenic creams in high end stores. I react to goat's milk and even ones with no fragrance. Well, for the first time ever, I found a cream that seems to be doing the trick. I'm on meds to help with the eczema, but the issue was the eye area, upper forehead [between eyebrows], and right under the nose and around the lips. I'd always get this redness and it didn't matter what creams I used. I recently switched to a Clinique soap [more like a moisturizer that comes out of a bottle] for my face, but it still wasn't getting better. It helped, but the redness wasn't going away! I read online about this cream. I don't use a ton. I put literally a drop under each eye and gently tap it into the area. I also just dab a tiny amount on any other red spot. I'm primarily using this for areas where the redness won't go away. Well, three days after starting this my skin is FINALLY healing around my eyes and in the other zones. My mom even noticed! I can tell you, this is a THICK cream. It's too heavy to slather all over your face. Use it to target areas and use a lighter moisturizer [Aveeno has a sensitive face cream that's new and works]. This cream will help the skin heal [all those annoying patches and redness]. It's worth the money. I suspect it's going to take me ages to finish this bottle off. But, it just is so nice to see my face and not have some sort of weird raccoon look. FYI - I do have some patches on my legs which I glob it on and it's helping that heal too. If you need a good hydrating cream that helps protect the skin and helps it get over that bump where it's irritated, this may work for you. Oh, it has absolutely no scent - none. That was a nice surprise. It's designed for sensitive skin. Initially, I was worried about the cost, but now that my eczema is healing up, it's worth every penny. This worked better than all those steroids and hydrocortisone my docs kept giving me. I was so stressed over the wrinkles under my eyes and for once, it's looking nice. :)
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Reviewed in the United States on January 24, 2023

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