SPF (Specific Pathogen Free Animal SPF) refers to the exclusion of pathogens that should be excluded from ordinary and clean grade animals, as well as pathogens that may cause latent infections or interfere with animal experiments. SPF animals should be raised in a barrier environment. Through a shielding device, the incoming fresh air is connected to the outside world. It must be filtered through primary, secondary, and tertiary filters, and all incoming items must be strictly disinfected before being sent through a special transmission device. The entry of breeding personnel must also be strictly controlled for microorganisms. SPF grade animal drinking water is sterilized water.
According to our company's years of technical practice, there are generally two core processes for the SPF sterile drinking water machine for experimental animals: one is the ion retention process, and the other is the 95% water removal manufacturing process.
Ultrafiltration process is a separation process that utilizes an active pressure membrane to retain colloids, particles, and relatively high molecular weight substances in water under external driving force, while water and small solute particles pass through the membrane. After passing through the ultrafiltration membrane, most of the colloidal silica contained in the water can be removed, and a large amount of organic matter can also be removed.
Although traditional water production processes remove and control bacteria from water, there are conditions for microbial growth and reproduction during water storage and transportation. From an ecological perspective, bacteria reproduce through cell division, with their population doubling after each division cycle, especially under high temperature conditions in summer, where the rate of reproduction is even faster.
However, the drinking water requirements for experimental animals are higher. Due to the high requirements for bacterial removal, general pure water treatment equipment cannot meet the drinking water requirements for experimental animals.
Based on our company's years of technical experience, it is not enough to simply add sterilization devices to ensure that animal drinking water remains sterile at all times. We have added some professional technical methods and unique technical practices from our company. Completely solved this difficult problem.
technological process:
