Australia's Science Forum

Ammeters have protection diodes that can burn out when they get too much current. Replacing these usually fixes most of them. Ammeters also have shunts to give different ranges of amps. Voltmeters have resistors for the different voltage ranges. If you know how to use a multimeter you can check and ...

Nobles ultra pure water from Woolies supermarket. In 10 or 5 litre pack. Costs about 70cents a litre. It has a low conductivity. I use this when making 1M silver nitrate and it is perfectly clear (no cloudiness).

Deionising water is done by tiny deionising beads. It removes the ions. The best type let the water drip though the beads giving them time to remove the ions. The filter may also have carbon to remove other non-ionic impurities. A Brita water filter works on this priniciple. Reverse osmosis is a fil...

I have the same dilemma too. I am about to run out of cartridges so have considered trying the following solutions: 1) Open an old cartridge. Replace the filling with a stocking full with deionising beads and perhaps activated charcoal. I call it the do it yourself option. 2)My other idea is to adap...

Hi forum members, I use a detergent called Sonex to wash my laboratory glassware. What do you use? I am looking for something that is easily available and works well, price is no problem. The Sonex story: It was easy to get in NSW through a company called Q-stores(now called something else). They ha...