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Martek lab and coins

Martek lab and coins

54K items sold
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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

Feedback ratings

Last 12 months

Positive1,252- positive feedback in last 12 months
Neutral6- neutral feedback in last 12 months
Negative1- 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 (19,284)

  • *****- Feedback left by buyer.
    Past month
    Verified purchase
    I purchased 2 Hallmark SW Ornaments (stormtrooper & Darth Vader TIE fighter). The items condition were as described. The box on the DV TIE was a little rougher than I remember from pics but not bad for it's age. Shipping costs were ok & shipping time was fine. Packaging was good and protected items. Value was excellent for what I got. the DV TIE lit up as advertised. Seller let it be known up front there would be a delay in shipping as they were away. Appreciated that. Good experience.
  • *****- Feedback left by buyer.
    Past month
    Verified purchase
    This 1944 uncirculated Great Britain silver sixpence coin is perfect for my collection of exquisite coins. It is as described and beyond. It is a great value for the uncirculated Mint condition. The packaging is just right sealed nicely in a heavy duty envelope. The shipping was very fast. Outstanding seller experience. Will buy from again. 5 stars plus.
  • *****- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Good Seller. FAST shipping, packaged well. Good Value. Good Communications.
  • *****- 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 6 months
    Verified purchase
    A+ seller! Shipped fast, well packaged, and arrived as described. An excellent eBay transaction! Thank you!
  • *****- Feedback left by buyer.
    Past month
    Verified purchase
    Item arrived as described in offer. Carefully packaged for prompt shipping and delivery. Recommend this seller. AAA+++
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