The
system comprises a laminated 5 diagnostic strip including a backing layer (105), an absorbent pad layer (106) configured for controlled capillary transport of milk, and a
reagent deposit layer (107) defining multiple spatially separated dry
reagent zones. The
reagent zones include a
pH indicator zone (101), a leukocyte
esterase detection zone (102),
a hemoglobin detection zone (103), and a
nitrite detection zone (104), each adapted 10 for operation in the milk matrix. A calibrated sample application point (108) receives a predefined volume of untreated milk and fluidically communicates the sample to the reagent zones via the absorbent pad layer. Colorimetric reactions develop in a result window area (109), enabling simultaneous
visual interpretation without analytical instruments, typically within three minutes. The invention further 15 includes a
moisture-controlled storage container comprising
desiccant elements (204, 205), a reference
color chart (208), and a calibrated
pipette (209), ensuring reagent stability and standardized use.