Welcome to the new CLEAPSS Science Website
What is CLEAPSS
CLEAPSS resources give teachers ideas for exciting and engaging practical activities that fire pupils'
imaginations and then, unlike many other sources of ideas, go on to show teachers and technicians in
detail how to translate the ideas into safe and exciting experiences in the classroom.
CLEAPSS advice and documentation is recognised by the Health and Safety Executive and the Department for Education..
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Latest news from CLEAPSS..
Calling all Biologists!
CLEAPSS Guide GL499 – DIY Centrifuge provides a complete, school ready design for a 12,000 RPM centrifuge with interlock, USB power and capacity for standard 1.5 ml tubes. Find it in What's New
The guide includes STL files for 3D printing the enclosure, rotor and handle, a DXF file for laser cutting the acrylic lid, a detailed components list, circuit diagram and fully illustrated assembly procedure. (Additional files found under GL499a)
The Science Teaching Survey 2026
The Science Teaching Survey 2026 is open! If you work in education, you know the challenges better than anyone – so we want to hear directly from you.
Take 15 minutes to complete the survey. Your answers will tell us what to focus on
Product Recalls
CLEAPSS is aware of an issue of Asbestos being present in a Hobbycraft and other manufacturers sand based products.
These are commercially available products rather than a specialist school science/DT product. However, we are aware that some schools may have these products.
If you do have these products you should follow the advice given in the below link.
Copper Sulfate
CLEAPSS has recently received multiple Helplines about incidents with copper sulfate.
This includes situations where pupils are deliberately consuming Copper Sulfate, please ensure you enforce the no eating / drinking rules in your labs and also are aware of how to deal with emergencies.
E-cards : How to deal with lab emergencies
No eating or drinking guidance
Please also review the updated Hazcard before using copper sulfate.
2025 Hazcard updates includes and update to the safety advice for copper sulfate. Hazcard 027C - Copper Sulfate
A quick and safe method for preparing hydrated copper sulfate crystals and beautiful blue crystals may be obtained within 30 minutes.
LabAid
Do you have excess equipment taking up space ?
Or looking to help support practical work ?
Then have a look at the work that LabAid does.
What's new..
All new documents..
GL499a - Make-it Guide DIY Centrifuge files
The attached zip file has STL print models for the box, rotor and lid handle, and the DXF file for the lid.
(24 Apr 2026)
GL499 - Make-it Guide DIY Centrifuge
This guide has instructions on how to build your own 3D printed centrifuge.
(24 Apr 2026)
Bulletin 186 - Summer 2026
Bulletin 186 - Summer 2026- From the director- Measuring the speed of light in a school lab- Wildlife surveys- Using non-clinical blood- Student Safety Sheet updates- HSE & COSHH update- Microscal.. full details
(15 Apr 2026)
GL258: Guidance for school employers undertaking registration of the use of school-science radioactive teaching sources
The following is CLEAPSS guidance for school employers undertaking registration for radioactive sources used in school science. Since 6th February 2018, employers who have employees using radioactive .. full details
(13 Apr 2026)
RPA004 - Radiation Protection Advice Service Information Sheet
Radiation Protection Advice Service Information Sheet
(13 Apr 2026)