Edu-Lab, SLS Education and Philip Harris do sets of 5 per material, that's the nearest I can find
That's 'fine' (not fine) until there's a reportable incident, then management i.e. will be asked to explain how the incident was allowed to occur - if (God forbid) someone has life-changing injuries or dies then the Head will be 'in the dock' for it. H&S always trumps inconvenience in my book.
Labs really should not be used as form rooms as you don't know what the kids get up to even with a teacher there and definitely no eating or drinking at all by anyone - not even Science Teachers.
PS21 HEALTH and SAFETY in the SCHOOL LABORATORY
PS082 - Using...
Somewhat surprised that this practical is still being done. Whereabouts in the UK are you?
In Scotland it's banned completely (Wales too?) but not England or Northern Ireland where it is supposed to be done in a fume cupboard.
We no longer do it as only one lab has a fume cupboard with...
The instructions aren't totally clear and in the correct colours, the 'blue' resistor appears to be banded 'purple-orange-black-black-brown' (73 ohm), the other two 'brown-green-black-gold' (15 ohm). Trouble is the kit is no longer available.
Anyone got / had one of these?
I need to know what the resistors are, the batteries and the voltage of the RGB LED is...