SKU: WSTS-900 (Clear Glass)
Explore the Science of Building Polymers by Cross-linking Long Chains of Molecules
Our Amazing Fluorescent Colors Won’t Stain Your Hands
This is slime like you’ve never seen before. No glue, no Borax, no messy mixing — just amazing amounts of fun for all ages. Just mix up the Activator solution and squirt your favorite String Slime™ color into the liquid. The instant the two liquids touch, you get solid String Slime to play around with. Rest assured, the bold, vibrant color is both safe and clean.
Remove the strings from the bowl and you’re ready for action. When you snap the string in half, you reveal its gooey center. To seal it back up, simply dip the ends into the Activator solution and keep the fun going strong.
Learning Science With String Slime
Using Spangler’s String Slime, kids can explore the science of building polymers by cross-linking long chains of molecules. The process of making String Slime is faster and easier than a standard slime recipe and it happens immediately. Groups of children will watch in shock and awe as the mixture morphs into solid strings of colorful slime.
Show Off Safe Chemical Changes for All Ages
Making String Slime is a wonderful activity for all ages. Both String Slime liquid and the Activator powder is safe to use as directed with adult supervision. Use String Slime to introducte chemical changes to young children. In addition, older children can learn more about polymer science through the process of cross-linking long chains of molecules together.
You Won’t Believe How Easy This Slime Is
Spangler’s String Slime is super easy to clean up and it won’t stain your hands. It’s safe to touch, twist, twirl and explore the magical properties of polymers.
Better Try It Under a Black Light
Our special fluorescent colors are designed blow your junior scientist’s mind under a black light. Collect all of your favorite colors for the ultimate slime experience.
For Teachers, Parents, Grandparents and All-Around Science Lovers
We haven’t forgotten about the new STEM and STEAM initiatives in our schools, bringing Science, Technology, Engineering, Art and Math together to transform young science lovers into real deep thinkers. Rejoice in what your young scientist brings to the table using Spangler’s String Slime-making activities.
What’s Included?
Toll Free: 800-223-9080
Monday – Friday
8:30 am – 5:00 pm (MST)
Steve Spangler Science
Denver Office
7901 Southpark Plaza, Suite 106
Littleton, CO 80120
[email protected]
The Spangler Science Club – Kit of the Month – Monthly Subscrip... 
Dorothy –
I hold a grandma camp every year this year was science theme. I ordered several items this one was the favorite. The kids were most excited to do any experiments I purchased here.
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Staff lisabrooks –
That is correct. Each one will make approximately 32 batches of slime. The tough part is deciding with color(s)!
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Heather Padilla –
Is this per bottle because I want more than one color do I have to spend $100 to get what is shown on the show?
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joshlittrell –
Heather – thanks for the question. We sell our string slime in liter size for $19.99 per color. If you want to get all the colors we have a product called Rainbow String Slime which includes each of the 6 colors in 8 oz bottles. Here is the link for the string slime: https://www.stevespanglerscience.com/?s=string&post_type=product
Please let us know if you have any questions and have a great upcoming weekend. Joshua
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Marissa –
Is there a way I can split this up between children. I am trying to plan fun activities at home for my children, for social distancing learning. If I can not split this up, would you recommend another Steve Spangler Science item that I can split up between students.
Thank you,
Marissa
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Sarah –
How hard is it to clean up?
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Lisa – Customer Service Manager –
The String Slime is super easy to clean up! You will be amazed how simple it is.
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Don Leu –
Is it poisonous if children would happen to put in their mouth?
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ablock –
None of our products are toxic but we do not suggest ingesting the slime. If a child does put the slime in their mouth, we recommend having them drink plenty of water and keeping an eye on them to watch for any adverse reactions. We always encourage adult supervision.
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Sheila Oneal –
How many colors do you get
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smack2021 –
Each color is sold separately. You can purchase the starter kit to get all three colors together!
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Swee Hart –
Is it possible to buy a combo of colors for one kit?
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joshlittrell –
Swee, thanks for the question. We do have a combo kit that includes 6 colors of string slime (8 oz/240 ml) per bottle. Here is the link for you to review: https://www.stevespanglerscience.com/store/rainbow-string-slime.html
Please let us know if you have any additional questions. Joshua
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Tammi-Sue Remsburg –
Can you reuse the solution? I will be doing this as a demonstration and would like to be able to make strings in the same solution over a 3 hour span. Is this possible? Or can you add the powder to the water without dumping what is in there?
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ablock –
Absolutely you can! After you do your first demonstration, you can add more powder (and water as needed) to the container you are using instead of setting up a whole new demonstration each time.
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Frank-Hamilton –
Hi, if I am unable to buy the activator powder. Can I just use the string slime alone?
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smack2021 –
You will need the activator powder to activate the String Slime.
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Melanie Blake –
Can you purchase the string slime activator separately?
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smack2021 –
Unfortunately we no longer sale the activator separately.
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Deena Rhodes –
I am planning a lab for 150 students. How much product do I need to buy?
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ablock –
Each bottle will make approximately 30 batches of slime so for 150 students we recommend 5-6 bottles.
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Vanessa –
Is this allergen friendly?
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Racheal –
Is there a way to get at least a color combo of smaller amounts for $20?
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Staff lisabrooks –
Our development team is planning on making a small multipack of the Slime Art, but it is currently still in the works and probably will not be available for several more months.
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Karen –
How much would I need to make this with 100 kids?
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Staff lisabrooks –
I would recommend 3-4 bottles for 100 kids. I would recommend ordering extra Squirt Bottles to make it easier with a large group of kids. We sell a 5 pack of these bottles for $7.99.
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Lorri –
Does the green color glow in the dark?
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Staff Lisa – Customer Service Manager –
All the colors will be luminescent under a black light, but they do not glow in the dark.
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Jessica –
I am considering making this at my five year old birthday party.
Can you tell me the ingredients as some of the children will be younger.
Thank you!
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Customer Service –
Please send us an email: [email protected] and we’ll be happy to help you.
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DZ –
I see that one order makes 32, but how much is a batch?
Say I want to make one string; (maybe a few inches long), for 1000 people. How many strings in a batch?
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Staff Lisa – Customer Service Manager –
Every 32 oz bottle of String Slime will make approximately 160 feet of string slime or “worms”. This means, if you do it just right, you should be able to get approximately 1,920 inches out of each container.
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cwood –
Is there an option to buy just a bottle of the String Slime Liquid? I only need that refilled.
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Staff lisabrooks –
Unfortunately, at this time, we do not offer this option. We will bring it up with our Product Development team to see if this is something we can offer in the future.
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Mandi Davis (verified owner) –
I have 3 different classes on different days, will the solution stay good if kept in a glad lock container from day to day or do the chemicals lose effect not long after the solution is mixed?
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Staff lisabrooks –
If you are referencing the unused product, the product will last in the bottles provided, as long as it is stored properly. The product needs to be kept at room temperature. The product should not be frozen or stored where it can get hot. You also need to be careful of germs or bacteria getting into the solutions. This can effect the product. If you follow this, the product will last several months, maybe even a year or more.
If you are referencing the finished product (aka the “worms”), keeping them in a zipper-lock back will help them last longer over a couple of days.
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Lisa –
How long does it last…meaning when you make it, can you keep for a while?
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Staff Lisa – Customer Service Manager –
As long as you store the finished slime batch in a zipper-lock bag and squeeze the extra air out. This will help it last a little longer before they dry and become hard strings of slime.
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Patty –
Can the green slime party pump be used to make this with the purchase of the activator solution? I have gallons of the green slime left from our science night. I’d like to do something different with it , other than just make more slime.
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Staff lisabrooks –
The String Slime is a completely different chemical reaction. The activator solution for String Slime will not work for Slime Art.
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Joyce Russell –
This looks a lot like the “worms” and vampire veins; is it the same experiment in different colors?
Thanks much,
Joyce Russell
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Staff lisabrooks –
It is very similar. The solutions changed a little bit as well as being offered in new, bright colors.
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cathy –
i want to do this with 21 kids… i have the small squirt bottles, will one bottle be enough to divide between 21 kids? just to give them enough to make a small strand of the slime
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Staff Lisa – Customer Service Manager –
Each 32 oz bottle of String Slime makes 160 feet of string slime. If you divide this evenly between the 21 squirt bottles, this should be more than enough for the kids to make their own slime creations. Maybe buy one extra bottle just to be safe.
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Debbie –
Is this appropriate fora 5 year old? What other kits are appropriate for -6 year old?
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smack2021 –
Hi Debbie,
All of our kits are designed for ages 5 to 12 with adult supervision!
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