一 、 Core characteristics and industry requirements
The design of this type of mirror fully complies with hygiene standards, with the core goal of:
1，No hygiene blind spots: The connection between the structure and the pipeline or tank is designed with sterility to avoid material residue and bacterial growth.
2，Easy to clean and disinfect: The surface is smooth and can withstand CIP (In Situ Cleaning) and SIP (In Situ Sterilization) processes.
3，Corrosion resistance: Made of 316L or 304L stainless steel, resistant to various cleaning agents, disinfectants, and food/pharmaceutical materials.
4，Excellent sealing: prevents external pollutants from entering the system and also prevents internal material leakage.
二 、 Main components
A complete sanitary stainless steel rectangular mirror usually consists of the following parts:
1. Mirror frame:
Material: Usually 316L stainless steel (with higher corrosion resistance) or 304L stainless steel. L represents low-carbon and can effectively prevent intergranular corrosion during welding and processing.
Surface treatment: It must be polished. Common levels include:
Mechanical polishing: achieving a smooth surface.
Electropolishing: a more advanced treatment that forms a micro smooth and passivated surface, greatly reducing adhesion and improving corrosion resistance, making it the preferred choice for the highest hygiene standards.
2. Window glass:
Not ordinary glass, requiring special properties:
Material:
Tempered borosilicate glass: the most common choice, with excellent thermal stability (heat shock resistance), high strength, and chemical resistance.
Quartz glass: Used for extremely high temperatures (such as over 300 ℃) or special occasions that require extremely high ultraviolet transmittance, the cost is higher.
Safety: Tempered glass or a combination of laminated design is usually used to ensure that there will be no contamination or injury in case of breakage.
3. Sealing system:
This is the key to ensuring sterility.
Sealing gasket: It must be made of sanitary grade elastic material, such as:
EPDM: Good versatility, resistant to steam, hot water, and various chemicals.
Silicone: non-toxic and odorless, resistant to high and low temperatures, suitable for pharmaceuticals and food.
Fluororubber: Used for special working conditions that require extremely high corrosion resistance.
Connection method: Usually quick fit clamps, welding, or threaded connections are used to ensure smooth and no dead corners at the connection.
三、 Main application scenarios
Food and beverage industry: observe the flow state, color and foam of milk, juice, beer and other fluids.
Pharmaceutical and Bioengineering: Observing cell growth and fluid mixing status in fermentation tanks, mixing tanks, and pipelines is a key requirement of Good Manufacturing Practice (GMP).
Cosmetics industry: Observing the mixing and transportation process of pastes and liquids.
