Drain the cabbage through a sieve, making sure to collect the water in a bowl. The cabbage will have dyed this water purple – this will become your indicator. Red cabbage contains anthocyanins, which ...

Rapid and accurate detection of water quality is essential for environmental monitoring and management. Among them, permanganate index (CODMn), nitrate–nitrogen (NO3−-N), dissolvable inorganic ...

People told not to store eggs or milk in one part of fridge as it can pose a 'health risk' ...