DELVOTEST®NEGATIVE CONTROL is a Milk Control free of antibiotic residues. DELVOTEST®NEGATIVE CONTROL can be used as the negative milk control sample within a test run for the indication of correct reading time (test duration) of microbiological inhibition assays such as DELVOTEST®.

DELVOTEST® PEN 4 is a positive control containing lyophilized sample of commigled milk containing 4 +/- 0.5 ppb Penicillin G DELVOTEST® PEN 4 is used for checking and monitoring the performance parameters of standard diffusion tests for the detection of residues of antibacterial substances in milk.

DELVOTEST® SULFA is a milk control sample aimed to demonstrate the appropriate performance of a test when detecting the presence of Suphonamides.