GVS 10496109 Wallerstein WL-DIFFERENTIAL 2mL Ampoules, 50 Pack
SKU: 39653677924

GVS 10496109 Wallerstein WL-DIFFERENTIAL 2mL Ampoules, 50 Pack

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Description

GVS 10496109 Wallerstein WL-DIFFERENTIAL 2mL Ampoules, 50 PackReady to use 2mL ampoule Wallerstein Broth (WL) is a liquid culture growth media that can save time and money by shortening prep time and minimizing possible contamination. The 2mL ampoules contain enough media to saturate a standard absorbent pad in a petri dish. WL Nutrient Broth is for the cultivation and enumeration of yeast and WL Differential Broth is for determination of bacterial count. Use of the medium at pH 5. 5 and incubation at 25C will

Ready-to-use 2mL ampoule Wallerstein Broth (WL) is a liquid culture growth media that can save time and money by shortening prep time and minimizing possible contamination. The 2mL ampoules contain enough media to saturate a standard absorbent pad in a petri dish.
WL Nutrient Broth is for the cultivation and enumeration of yeast and WL Differential Broth is for determination of bacterial count. Use of the medium at pH 5.5 and incubation at 25°C will give reliable counts for brewer’s yeast. Adjustment of the pH to 6.5 and incubation at 30°C allows for the selective growth of baker’s and distiller’s yeast.
Liquid Media
Ready-to-use media considerably reduce the preparation time in quality control laboratories and also effectively reduce the risks of cross contamination. GVS is cooperating closely with quality assurance managers in the industry in the development of its own media and test kits. This intensive product development has produced a range of products that is being used to monitor production plants and conduct Microbiological checks on raw materials through to final product release in laboratories in more than 40 countries.

Features:

Pre-Sterilized and Ready to Use
Time Saving, 2 mL Portions, Reduce Risk of Cross-Contamination.
2mL ampoules contain enough media to saturate a standard absorbent pad in a petri dish
Optimal media stability, sterility, and reproducibility
Less time-consuming, higher productivity
Batch-specific quality certificate in each pack, Confirms Reproducibility and Reliability

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 39653677924

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4.6 ★★★★★
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Sue Henry
Whiting, US
★★★★★ 1
Do not buy
Cheap, but tastes bad. I guess it worked but I tossed a big bottle of it and got the higher price Spring Valley 10 kg melatonin which works well. The taste is great (strawberry) and highly chewable.
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Reviewed in the United States on March 12, 2026
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Verified Purchase
Fred Heaston II
Charlottesville, US
★★★★★ 5
Got it
They are good vitamins. Thank you
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Reviewed in the United States on October 19, 2025
T
Verified Purchase
Trudi madio
Waukegan, US
★★★★★ 2
not happy it said gummies that why l bought them
this product said that they were gummy’s but they’re actually chewable tablets. I can’t eat tablets. I’m very disappointed that it said gummy. That’s the only reason why I bought it.
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Reviewed in the United States on March 10, 2026
B
Verified Purchase
BookzRule
Natrona Heights, US
★★★★★ 4
Not as effective
I don't find the chewable as effective as the ones that dissolve. These don't seem to give me the same relaxing quality.
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Reviewed in the United States on November 30, 2025
A
AJ
San Leandro, US
★★★★★ 5
A Year’s Supply in One Bottle, But 10mg is Potent
I picked this up mainly for the value factor. Getting 360 tablets in one bottle means I don't have to think about reordering for a very long time, which is convenient. The "fast dissolve" claim holds up well. You don't need water to take them; they break down quickly in your mouth without leaving a gritty residue. The berry flavor is decent—since it is naturally sweetened, it doesn't have that harsh chemical aftertaste that some sugar-free brands have, though it is slightly chalky compared to a gummy. The main thing to be aware of is the dosage. 10mg is a heavy dose if you are accustomed to the standard 3mg or 5mg tablets. It definitely works to put you out quickly, but I found that 10mg can be a bit overkill for a standard night. The nice thing about the tablet form (vs. a capsule) is that they are easy to snap in half if you want to taper down to a 5mg dose to avoid feeling groggy the next morning. If you have a high tolerance, this is a great bulk buy, but beginners should probably start with half.
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Reviewed in the United States on December 16, 2025

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