Amid surge in the Covid-19 cases in the national capital, demand for self-testing kits has increased. "Around 5,000-10,000 self-testing kits are sold every day in Delhi and is in high demand," said Delhi Retail Distribution Chemist Alliance President Sandeep Nangia. <br />“Oxymeters were in great demand during the second wave of Covid-19 pandemic similarly, we see a sharp rise in the sale of self-testing kits,” he said.