Use our EZ-Ject or GLO-STICK injection method for small-to-medium sized AC&R systems – such as residential units, ice machines, window units, and refrigerators. Use our BigEZ injection method for medium-to-large sized AC&R systems – e.g., commercial units, supermarket units, refrigerated warehouses, food and dairy plants, and industrial facilities. Review our product dosage information for the correct application.