Sometimes when you buy glycerol, you can buy it already in a 1% solution. When you do purchase your glycerol, make sure you read exactly what you have so that you know whether you have a diluted solution or pure glycerol. If you have purchased pure, undiluted glycerol, you can create a 1% solution by mixing up a solution that has 10 ml of glycerol for every liter of water. This will give you a solution that is “1% by volume.”