Answer reviewed 26 February 2023
Regarding Polymer slime powder
The Polymer (PVA) used for making slime, can be purchased from a number of educational suppliers, e.g., Science Supply Australia, Serrata, OfficeMax, Prof Bunsen, Westlab, and from Chem-Supply agents, e.g., Omega Scientific.
It is available either in powder or liquid form as 10% Polyvinyl Alcohol.
The PVA powder can be difficult to use and takes time to dissolve. As a comparison, the PVA solution is quicker and easier to use.
Using PVA acetate glue is also effective.
PVA is usually used in making slime using borax, which can be conducted in schools using safe procedures. Concerns over the use of borax in making slime are addressed in the Science ASSIST Information Sheet: Making slime using borax and related substances1
There are also non-borax recipes that could be considered.2,3
Ochre4 is available from hardware stores (it is used in the building industry) and is available in a range of colours, e.g. red, brown and yellow.
It is also obtainable from Pottery/Ceramic suppliers or any school art suppliers and is available as pigment, inks and in acrylic colour or oil colour.
Art suppliers, such as OfficeMax, have a range of water-based acrylic paints (non-toxic) containing ochre pigments, e.g. burnt sienna, burnt umber, red and yellow ochre. Terracotta and stoneware clay is also available in 10 kg packs.
Ochre can be made using pottery clay from the school art department and adding hematite powder to make it red.
School Science Suppliers
Science ASSIST has a list of School science suppliers,5 which is an online spreadsheet of school science suppliers and businesses which provide laboratory equipment, resources, supplies and other merchandise which is suitable for school science laboratories.
1 Science ASSIST. (2020). Science ASSIST Information Sheet: Making slime using borax and related substances. Retrieved from the Science ASSIST website:
2 Questacon. (nd) Cornflour Slime, Retrieved from the Questacon website: https://www.questacon.edu.au/learn-and-play/activities/cornflour-slime
3 Helmenstine, A-M. (2018, April 17). Borax-Free Slime Recipes. Retrieved from the ThoughtCo website: https://www.thoughtco.com/borax-free-slime-recipes-608227
4 Hirst., K.K. (2019). Ochre - The Oldest Known Natural Pigment in the World. Retrieved from ThoughtCo website: https://www.thoughtco.com/ochre-the-oldest-known-natural-pigment-172032
5 Science ASSIST. (2023). School science suppliers. Retrieved from the Science ASSIST website: https://assist.asta.edu.au/resource/664/school-science-suppliers