CLEAPSS Supporting practical science and technology
CLEAPSS Chemistry
Chemistry – Let's make it happen!

CLEAPSS provides guidance for teachers, technicians, science advisers and H&S officers on all aspects of practical work. We know that chemistry experiments can cause problems and activities may not 'work' as expected, or provide the effective learning opportunity that’s required. Sometimes, health and safety concerns are raised about the chemicals involved.

CLEAPSS works with suppliers and others to ensure that suitable chemicals and equipment are used in schools and we can also suggest ideas and innovative methods that might help you enhance practical chemistry in your school.

Colourful displacement reaction
So, if you’re stuck, or need a bit of advice, get in touch by e-mail or 'phone and we'll do our best to help!

Latest news from CLEAPSS..
New Edition of CLEAPSS Guide L93
The new edition of L093 (February 2024) is now available to download. 

Guidance leaflet GL114 (also available now) details the main changes in the new edition. 

A revised edition of DL093 containing editable versions (MS Word) of the key record keeping forms is also available.

RPS in schools should review the revised guidance carefully, in particular, sections 6.5, 6.6.1, 9 and 15 of the revised L093 need to be completed by the RPS.

CLEAPSS will scheduling additional training courses (face to face and online) for RPS(schools). These will be advertised via the website.

RPOs in the CLEAPSS RPA service will be invited to attend an online briefing about the implications of the changes for their role. Invitations will be sent by e-mail this week.
CLEAPSS at the ASE Conference 2024
Thanks to everyone we met at the ASE Conference in Northampton.

You can also see a showcase video reel here.

You can find links to all our conference resources here.

Supply of chemicals - New Regulations

The regulations for supplying explosives precursors and poisons was updated on 27th September 2023 and came into force on 1st October. These put in place new requirements on the supply of certain chemicals which include the following commonly used in schools:

Explosives precursors: acetone, aluminium powders, hydrochloric acid, hydrogen peroxide, sulfur and sulfuric acid.

Poisons: ammonia, phenols, sodium hydroxide, sodium nitrite and sodium hypochlorite solutions. 

The regulations state that businesses and professional users should be verified by the supplier every time a new purchase is made of these regulated chemicals. 

 Where they are being supplied frequently or on a routine basis to the same professional user or business, verification should occur every 18 months or whenever there is a change or deviation from normal purchasing patterns. This is something suppliers can choose to do, but given schools don’t generally make frequent purchases of these chemicals, it is likely that the information will be required for each order.

The person making the sale (the supplier) must obtain the following from the business customer (i.e. the school):

<!--the business customer’s name and address. If the business customer is not an individual, the name of an individual who is authorised on behalf of the business customer should be recorded;

<!--a form of photographic identification of the business customer or, if the business customer is not an individual, of the individual making the purchase; this could be a school photo ID card

<!--a statement of the nature of the business customer’s trade, business or profession, or of the public function that the business customer performs; and the business customer’s VAT registration number, if the business customer has such a number

Your school will have to decide who is authorised on behalf of the business to make the purchase (the name on the order must match the individual). For schools it is most likely to be a technician, head of science or finance manager.

There is no licence which applies to these regulations, so there is nothing schools will need to apply for.

This information should be provided when requested by the company making the sale, there is no need to provide it in advance.

Further details including a list of the regulated substances and concentration thresholds can be found in the Explosives precursors and poisons: general guidance on the government website  

Heads of Science Training
Are you a head of science / subject / dept ? 

Not sure on how H&S law applies to you and your team ?

Then our H&S Course for HoD is ideal for you, find all the details here
CLEAPSS at the ASE Conference Northampton 2024
We were pleased to be returning to the ASE Conference in 2024 in Northampton.

Find our workshop details here.

Book your place with the ASE to join us here.


Chemistry Resources
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Members only resource Click to download Document.
Crude oil refinery is a foundation industry, providing fuel products for heating and transport, and raw materials for many further industries, including polymer and pharmaceutical manufacturing. Fract.. more

Free resource Click to download Document.
A portfolio of designs of school science laboratories, by Andy Piggott for the ASE

Members only resource Click to download Document.
This leaflet is intended to give brief details only of the major manufacturers and suppliers of electronic balances suitable for use in science within secondary schools and colleges.

Members only resource Click to download Document.
Outlines the work that science technicians do, the tasks which they should not, ideally, be given, and provides a pointer to the number of technicians needed in a department and to management issues w.. more

Members only resource Click to download Document.
This includes all the pictograms required by the Globally Harmonised System for chemical hazard labelling. A selection of large (A4) and small sized pictures for printing and use in schools

Free resource Click to view on YouTube
Testing for organic functional groups: unsaturation or double bonds

Members only resource Click to download Document.
Straightforward advice on how to make sure your practical lessons work as you intend. Includes planning and preparing the activity, managing students, timing and equipment, and clearing away. Also inc.. more

Members only resource Click to download Document.
Straightforward instructions on using a tap funnel, a piece of equipment used in several chemical preparations and investigations.

Members only resource Click to download Document.
Brief risk assessment guidance and experimental notes for a range of practical activities involving monobasic organic acids and their salts (Hazcards 38A, 38B, 38C, 38D).

Free resource Click to download Document.
This guide is intended for those using, buying, or designing fume cupboards for schools and colleges. Information is provided on common problems, on choosing and installing appropriate cupboards an.. more

Showing results 1 to 10 of 379
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