The Coulter Retic-X Cell Control is a crucial component for your laboratory needs. This product comes in a box of 12, each containing 3.5mL of the control substance. The box includes 4 each of Levels 1, 2, and 3, providing a comprehensive range for various testing requirements. This product has a minimum expiry lead of 90 days, ensuring you have ample time to utilize it effectively. Please note that this product is available for shipping only within the Continental US.