Nutrient Pad Sets consist of biologically inert cellulose pads impregnated with liquid nutrient media of the formula corresponding to their type. They are individually pre-plated in autosterile petri dishes consisting of polystyrene. The standard NPS box contains 100 sterile Nutrient Pads. Ten petri dishes are sealed in an aluminum bag. This special packaging protects the sensitive formula constituents during transport and storage from fluctuations in humidity and temperature. They are always used in conjunction with membrane filters. Hence each type of Nutrient Pad comes with individually packed and sterilized membrane filters. These membrane filters are tailored to meet special requirements of microbial detection.

Sartorius nutrient pad sets are practical. They require moisture with 3.0 – 3.5 mL of sterile and demineralized water, and they are ready to use. Optimal moisture is evident when an excess ring of water surrounds the NPS. Once moistened, you have a sterile culture media appropriate for optimal microorganism growth.?Each nutrient pad is individually inserted into a petri dish and sterilized. Ten of these petri dishes are sealed in an aluminum bag, protecting the constituents of the nutrient pad during transport. This ensures that you receive a high-quality product that you can use with confidence. Quality persists throughout the entire shelf life of the nutrient pads up to 24 months.?