SKU: 58277909924

MTC Bio T8830 Culture Tube, 14mL, 17 x 100mm, PP, w/ attached 2-position screw-cap, printed graduations, sterile, 20 bags of 25 tubes

Sale price$134.20 Regular price$149.11
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

MTC Bio T8830 Culture Tube, 14mL, 17 x 100mm, PP, w/ attached 2-position screw-cap, printed graduations, sterile, 20 bags of 25 tubesMTC Bios new DuoClick tubes feature a unique, patent pending screw closure system. DuoClick tubes completely eliminate the excess force, splashing and general frustration of traditional snap cap culture tubes. The advanced cap design includes two distinct positions for aerobic and anaerobic culturing (see flow chart below). Just rotate the cap 1 4 turn to the first click to secure the cap in the aerobic position. Or, rotate it another 1 2 turn past

MTC Bio’s new DuoClick™ tubes feature a unique, patent pending screw closure system. DuoClick tubes completely eliminate the excess force, splashing and general frustration of traditional snap-cap culture tubes. The advanced cap design includes two distinct positions for aerobic and anaerobic culturing (see flow-chart below). Just rotate the cap 1/4 turn to the first click to secure the cap in the aerobic position. Or, rotate it another 1/2 turn past the second click for a leakproof, airtight seal for anaerobic culturing.
DuoClick tubes are available gamma sterilized, with screw caps attached, and in our exclusive ready-to- use rack packaging. Polypropylene tubes can be centrifuged at up to 4,000xg.
• New patent pending screw-cap!
• Aerobic culturing at first click
• Anaerobic after second click
• Printed graduations
• Flat, markable screw-cap

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
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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: 58277909924

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4.3 ★★★★★
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Genevieve Siefker
Alexandria, US
★★★★★ 5
Great product!
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
This is the best melatonin if I have trouble waking up in the middle of the night, I take 1 mg. Under my tongue and I can fall back to sleep. Excellent product. It's good enough that I only take one. Much better than other brands I have tried!
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Reviewed in the United States on May 13, 2026
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Sam
Los Angeles, US
★★★★★ 5
Fast Working
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
I have a hard time staying asleep. I took this product the first day and slept very well. I would recommend this highly. Dissolves Faunder the tongue and works sooner than capsules or pills.
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Reviewed in the United States on January 24, 2026
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Verified Purchase
Anne W.
Draper, US
★★★★★ 5
Melatonin by Superior Source
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
I've bought this melatonin repeatedly for years. It works gently and naturally to help me drift off to sleep and wake rested and ready for the day. I always get the smallest dose 1 mg
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Reviewed in the United States on December 19, 2025
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Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 4
So far it does help me with becoming drowsy for sleep
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
So far this melatonin helps with making me drowsy, but I still take 1/2 a prescribed sleeping pill with it. Normally, within a half hour I am sleepy. I have not tried taking it by itself yet. I am a petite build, so I think my size factors in to how well it works for me. Flavor is okay. Easy to take melting it under my tongue. Price is okay. I like that it is sublingual and limited added ingredients. I don't usually take chamomile due to being sensitive to it in the past, but seems to be okay in this pill. It also seems to help me with staying asleep for a longer period of time.
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Reviewed in the United States on February 12, 2022
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LeAnne S
Bozeman, US
★★★★★ 5
Aids my sleep w/o grogginess the next day!!
Size: 100 Count (Pack of 1), Style: Melatonin 1mg
Superior Source has been a game changer in being part of my sleep aid supplements! My physician recommended this brand and dosage and I'm grateful!!
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Reviewed in the United States on May 19, 2026

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