Chemiluminescence You can use your Luminol product for this step while it is still moist. Mix 0.2g wet Luminol with 10 mL of 3M Sodium Hydroxide in a 1 L Erlenmeyer Flask. Dilute the solution to 500 mL. Add 20 mL 3% Hydrogen Peroxide.
Boilers in the loft Advantages (not many) ï· Boiler is out the way, if thereâs lack of space. ï· If open flue, less chance of CO Poisoning ï· Some boilers are not pretty and there is a lot of pipework Disadvantages ï· The weather, freezing pipes and boiler. The boiler itself can suffer being open to the elements, lofts can get very cold and very hot. ï· The loft is an inhospitable place the work. Carrying out maintenance and servicing is not best carried out in the loft. ï· Needs a wall to be mounted on, not all lofts have a wall.
A system (or pressurised sealed system) boiler uses a central heating expansion vessel which is usually installed in an airing cupboard. There is no need for an expansion tank in the roof as the combination of boiler and cylinder allows you to run mains pressure hot water from more than one outlet at the same time.