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Ward's® Live Escherichia coli Conjugation Strains
Ward's® Live Escherichia coli Conjugation Strains
Ward's® Live Escherichia coli Conjugation Strains
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Ward's® Live Escherichia coli Conjugation Strains

Marsoni M251S
Sale price$28.75
Pay 4 payments of $7.19 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Ward's® Live Escherichia coli Conjugation StrainsStrains of Escherichia coli with sensitivities to Ampicillin and Streptomycin. Watch their traits via conjugation. Conjugation HOST (RECIPIENT) Culture (F ): Ampicillin sensitive and Streptomycin resistant Host Strain (F ). Media: Tryptic Soy Agar. Incubation conditions: 37C. Storage conditions: Freezer. Packaging: Lyophilized. Bacterial and fungal cultures are restricted and can only be ordered by educational professionals. Caution: Although this
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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]
  • Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 2311 reviews
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Product Reviews
M
Verified Purchase
MinimalistMom
Louisville, US
★★★★★ 5
Great for small dog fetch
Style: 14" Length Sport Launcher
We love this for keeping our hands clean and saving our shoulders while playing fetch. Not sure why this size is so incredibly difficult to find (not in any stores in our area). It fits both the small rubber and tennis ball types. We have a 15lb rat terrier, and he loves it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
S
Verified Purchase
Sara West
Pawtucket, US
★★★★★ 4
Ball is very small
Style: 14" Length Sport Launcher
It says it’s for small dogs up to 15LB. My doggie is 15 LB and this is way small. It’s a tiny ball. If your dog is 12LB to 20LB I would get the next size up to small.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2025
S
Verified Purchase
Sunshine
Bozeman, US
★★★★★ 5
Great fun.
Style: 14" Length Sport Launcher
Always fun.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
E
Verified Purchase
E.M.H.
Carnegie, US
★★★★★ 3
Comes with a fabric covered ball
Style: 14" Length Sport Launcher
Disappointed in this. I have the large size and expected a smaller version of the rubber ball. Instead this came with a ball covered in fabric. The dogs I bought it for won't play with the ball. Maybe it is my fault for not reading more closely but why would Chuck-It even sell something so cheap and poorly made. Dogs can easily rip the fabric off the rubber (which is in two pieces). Very strangely made. Now I have buy a ball to use it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 12, 2025
A
Verified Purchase
AvidShopper333
Los Angeles, US
★★★★★ 5
Launches!!!
Style: 14" Length Sport Launcher
Please note that this launcher is for a smaller sized chuckit - it came as a package deal with an order of small fuzzy chuckits and it works GREAT. Recommend using in dry weather since the water sprays when wet (or just be better at throwing than us!)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026

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