Air Liquide have a comprehensive Cardice® product range
Cardice® is an Air Liquide UK Limited registered trademark for solid carbon dioxide, commonly known as dry ice.
Cardice® is manufactured to food grade standards and has a very high cold content per unit weight (far more than any alternative coolant). It also sublimes to leave no residue - so is ideal for one way deliveries.
This product is recovered and purified - so its use does not contribute to greenhouse gas emissions.