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.

DELVO® ZYME G is a chicken egg white lysozyme for the prevention of late blowing in hard cheese and semi-hard cheese with medium to long ripening times at elevated temperatures.

DELVO® -TEC HT-10C DSL is a concentrated lyophilized lactic acid starter bacteria culture blend for direct inoculation into milk for the production of cheese.

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