DELVOTEST SP NT is a standard diffusion test used in the food industry for the detection of residues of antibacterial substances. The DELVOTEST SP NT contains solid agar medium seeded with standardized number of spores of Bacillus stearothermophilus var. calidolactis along with required nutrients for growth purposes and antifolate trimethoprim. It allows detection of residues like Penicillin G and Sulfadiazine in samples at very low concentrations. The DELVOTEST SP NT helps ensure product safety and quality in the food industry by allowing easy and reliable detection of antibacterial residues which maintains regulatory compliance and consumer safety.