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Martek lab and coins

The seller is away until Tue, Jul 15, 2025. Expect a delay in delivery until they return.

Martek lab and coins

54K items sold
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Callinectes Coins

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Callinectes Coins

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About us

MI is here to provide low cost stable isotope reagents to the research community. We specialize in compounds labeled with Carbon 13, Nitrogen 15, and Deuterium.....

We also sell surplus lab reagents for ourselves and other small companies in order to generate revenue to enhance our production capabilities

If you are in the Baltimore Washington area and have some lab items to sell send me an email I can help!

Occasionally we have some fun non science items for sale as well! This includes the vast coin collection I am working through so check it out!
Location: United StatesMember since: May 31, 2004Seller: callinectes1
Top Rated SellerMartek lab and coins is one of eBay's most reputable sellers. Consistently delivers outstanding customer service Learn more

Feedback ratings

Last 12 months

Positive1,791- positive feedback in last 12 months
Neutral6- neutral feedback in last 12 months
Negative0- negative feedback in last 12 months

Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.9
Shipping speed
5.0
Communication
5.0

Seller feedback (19,162)

  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Quick reply to any communications, well packaged for delivery, item in very good condition and was as described, fast shipping and a very reasonable price for this item, will not hesitate to purchase from again, THANKS!
  • *****- Feedback left by buyer.
    Past month
    Verified purchase
    Good Seller. FAST shipping, packaged well. Good Value. Good Communications.
  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Prompt delivery. The coin was well packaged and protected while in transit. The coin's quality was exactly as described. Thank you for the fantastic price. I am very pleased with this purchase and I Highly recommend this seller.
  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Item exactly as described and shipped promptly after closing, well packed. Professional dealer n all respects except he did not enclose an invoice of the transaction which would have been a big benefit for me at tax time. Other than that, excellent dealer. Well recommended.
  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Great deal on this coin! It was packaged well to protect it in transit, shipped fast, and is exactly the same coin as shown in the photo. I would definitely buy form this seller again!
  • t***1 (25)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Slight error initially so it took a little longer to get the correct item here. However seller was quick to respond and ensure the order was satisfied correctly. I would buy from them again. Thanks.
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