This is the refill pack for the Chemistry-in-Action kit.
You can order it on it's own, or as a "plan ahead" top up when you buy your Chemistry-in-Action kit. It contains 125g of coloured sodium bicarbonate and 75g of citric acid (this replaces the glucaric acid from the original kit ingredients).
This is more than 3 times the original amount of the sodium bicarbonate and almost 2 times the amount of citric acid (less of the citric acid is required for the experiments).
One of the benefits of our kits over others, is that you can order refill chemicals so that kids can use the kits over and over again.
Because we know that your kids won't want to stop using our science kits, we make sure that they don't have to!