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    What People Are Saying

    well worth the $$
  • Anita
  • 09/24/2016
  • My order arrived much quicker that I'd anticipated. I am very pleased with the quality of the frogs and their size
    Second time ordering
  • Amanda
  • 08/23/2016
  • This was the second time I ordered these bad boys for a homeschool co-op dissection class. They came very quickly and well packaged, but this time all of the frogs were already cut up the "belly". I was a bit disappointed because that is the most crucial part of cutting the frog open and the kids won't get to experience it. The last time I ordered them they were not already cut, but they also came individually bagged then (1 single bad this time) so I do not know if it was a different supplier. Still a good specimen! [HST adds: Single or double injected specimens will have a cut in the belly or leg where the manufacturer injects the colored latex.]
    Great value and product.
  • Karen
  • 07/21/2016
  • I bought this for my daughter to use in her Apologia biology class. She will be using it later this year. I think that it is a good size. It was shipped quickly and arrived in great shape.

    reward points

    Frog, grass, 3.5"-4", single injected

    Ages 11+

    Item# PM-FROG4S

    $5.15 in_stock

    In Stock

    Order now to ship Monday, 08/21. Express shipping is available.
    Product Overview
    This medium preserved grass frog specimen has arteries single injected with red latex.

    Quantity Pricing

    Save big when you purchase at the quantity levels shown below!


    QUANTITY 1 - 9 10+
    PRICE $5.15 $4.65
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    • Product Details

      Frog, grass, 3.5"-4", single injected

      This medium single injected preserved grass frog specimen has a body length of 3.5" to 4", large enough to see all the internal organs and external structures. The arteries are injected with red latex to make easier to trace the vascular system. The medium size and single injected vessels of this preserved grass frog specimen provide a good balance between enhanced dissection experience and cost. Genus and species is typically Rana forreri.

      10+ pricing is based on bulk-packed specimens. When necessary, you will receive a combination of 10-packs and individually packed specimens to fill your order.

      Note: Specimens are initially preserved with a formaldehyde solution, the best animal tissue fixative. The formaldehyde is then displaced first with water and finally with a glycol solution to produce a moist, low-fume specimen which will not decay over time.

      HST Specimen Guarantee

      In sealed, original packaging, our preserved specimens are guaranteed to remain fully preserved and free of decay for six months from the date of purchase.

      Once the original package is opened, use specimen within one month. For best results, observe the following storage procedures:

      • Store specimen in heavy-duty, zip-lock bags to minimize drying between dissections.
      • Specimen will slowly dry out or become contaminated in zip-lock bags; add a teaspoon of Specimen Holding Fluid to retain moisture.
      • Freezing or refrigeration is not necessary and may damage fragile tissues.

      Shipping Note: This item contains preserved specimens and only ships to a street address in the 50 US states.

      More Information

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