Chek-Stix® Combo Pak Positive and Negative Urine Control Strips (25 strips per bottle) Level 1 (negative) and Level 2 (positive) ready to use dip tube liquid quality controls. 2657 MSRP: ₹7,120.00 ₹6,160.00 Add to Cart Please login to purchase × Please login or create an account to purchase this item Ok Your account is not yet approved × Please wait until your account is approved. Ok