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Details on how to correct the three most common faults found in school microscopes - dirty optical glass, wrong position of "stop" and overtight or loose tension.
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You can demonstrate that hot glass is an electrical conductor (hot glass is actually an example of a solid electrolyte). This is counterintuitive because at room temperature, glass is a good electrica.. more
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Eye protection needs to be worn when there is a risk of injury to the eyes. Not all activities pose such risks, but for those that do, the type of eye protection needed depends on the nature and sever.. more
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Information on the hazards associated with trying to view the Sun, and how it can be done safely.
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Guidance on general topics including chromatography and electrophoresis, cryogenics, soldering and electrical connections, electrolysis, glass working, glues and adhesives, photography, using pupils a.. more
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This guidance is for devices used in the school laboratory that emit ultraviolet light. Ultraviolet light is classed as optical radiation ranging in wavelength from 100 to 400 nm, below (in wavele.. more
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Instructions on how to calibrate eyepiece aids using a DIY stage micrometer. 
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An alternative protocol for staining blood smears.
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This guide gives general advice to technicians/ teachers about using haemocytometers for precise cell counts, and CLEAPSS microquadrat for counting cells and studying microhabitats.
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Components of blood can be stained and viewed using this protocol.
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Showing results 1 to 10 of 379
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