Welcome to Steve Spangler Science. Skip directly to: main content, navigation, search box.

Geo-Polymers Jumbo Test Tube

Jelly Marbles and Water Cubes in our Jumbo Test Tubes

  • Geo-Polymers Jumbo Test Tube
    Item #: WMTT-150

    $12.99 In Stock

Usually ships out the next day.

Recommend for 4 years & up with adult supervision.

DOTD Sold-Out

Today's Deal has Sold-Out

We know you love our Jelly Marbles and our Water Cubes... why not love them even more when we put them together in this Jumbo Test Tube Kit?  We'll even throw in some coloring tablets to make a rainbow of growing polymers!  These superabsorbent polymers will leave you amazed as they grow up to 300 times their original size when you put them in water... and when you are ready just take them out of the water, let them shrink back down and use them again and again!  Recommended for children ages 4 and up.

What's included?

  • 2 Jumbo Test Tubes with Rack and lids
  • 10 grams of Jelly Marbles Polymer
  • 10 grams of Water Cubes Polymer
  • True Colors Color Mixing Tablets

What does it teach?

Like all of our fun and fascinating polymer products, these tiny cubes and marbles teach a big lesson... in math, chemistry and the importance these thirsty polymers can play in maintaining a healthy environment. The possibilities for experimentation are endless when you drop the polymer in water. Try drying them out to see how quickly evaporation can take over… and then use them again and again.

Product FAQ

Warning - Choking Hazard

Amazing!

Cindi    -  December 7, 2010

1 2 3 4 5
This user gave 4/5 stars


My grandchildren (ages 7, 10 and 13)loved these. They played and played with them. It was so fun to make a hypothesis about what we thought would happen with the colors when they dehydrated. The reason I only gave them 4 stars is because they are a little fragile and we had a few of them break on us. One was dropped and another just split open while it was dehydrating. They handled them a lot as they watched them change. My 7 yr old grandson, who is not really into science, was fascinated and asked to take them to school for show and tell. Would recommend them!

Thank you, thank you, thank you!!

Karen    -  February 2, 2010

1 2 3 4 5
This user gave 5/5 stars


I cannot tell you enough, how happy My son and I are with the order from your website.
The jumbo test tubes are amazing, and the polymers are huge!!!
This is a great Science project for my son, and I cannot thank you enough for everything that my order included.
The tubes and holder are great, the quantity of both the bead and cube polymers are substantial and the color tablets to color them are great. Also, thank you for the mentos with tube to make other fun science experiments.
YOur website has amazing customer service and I loved the fun and friendly e-mails with the update and status of our order. I will keep coming back to you every year and everytime my son wants to do some very fun science. Keep doing the videos, they are absolutely great.

--A loyal customer!

Write your own review for this product.