You are looking at Clarity Urine/HCG Liquid Controls Semiquantitative Assay 2 Level Set. 1x15mL Easy Dispensing Dropper Bottles from Clarity Diagnostics. Clarity Urine/HCG Liquid Controls Semiquantitative (Dipstick) Assay, 2 Level Set. 1x15mL (Ideal for Physicians/Small Labs), Easy Dispensing Dropper Bottles, For Use With the Clarity Urocheck 10SG and Other Urinalysis Reagent Strips for Both Visual and Automated Readers, Values for All Analytes - Including Creatinine and Microalbumin are provided (Maximum Shelf Life 24 Months IF Refrigerated)(Item Can Be Kept at Room Temp for 30 Days then Must Be Discarded)