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    Products > Seed Preservation Rooms – SPR-L/M/S
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    Seed Preservation Rooms – SPR-L/M/S

    Temp. Range: -18℃ to 15℃
    Humidity Range: ≤50%RH
    Moisture Content for Seeds: 5% to 10%
    Lifetime for Seeds Preservation: ≥20 years
    Temp. & Hum. Sensor: Equipped with WAISALA HMP60
    Programmable Interactive Control system with 10" Touch Screen
    Equipped with smart phones APP remote control system
    Fresh Air System: Equipped with fresh air system
    Growing Volume: 19.66m³/13.11m³
    Exterior Dimension (W×D×H): 2310×2910/4200×3000mm

    • Product Introduction


    We provide seed preservation solutions

    Help you with professional germplasm bank construction, optimize the process of germplasm resource import and export, and build a reasonable functional layout of germplasm bank.


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    Rational distribution

    Meet the management process of germplasm bank, meet fire prevention regulations.




    Large and systematic storage

    Achieve different kinds germplasm preservation.





    Advanced

    Access and operation automation, intelligent remote monitoring.




    Energy saving and stability

    Materials and noise are environmentally friendly, equipment is reliable and with high energy efficient.



    •  Specifications


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      Category of germplasm bank  

    		Main technical indicatorsStorage life

    Storage feature

    Short-term bank

     •  Temperature：10~15±2℃

     •  Relative humidity：≤50%RH

    		3~5years

    1. Short-term storage or turnover 

    2. Seed moisture content : 10 %

    3. Seed packaging : both sealed and unsealed

    Medium-term bank

     •  Temperature：-4~4±2℃

     •  Relative humidity：≤50%RH

    		10~20years

    1. Maintain the genetic integrity of the germplasm for more than 10 years

    2. Seed preservation pre-treatment of vitality, moisture content, drying

    3. Seed moisture content : 6 % ± 2 % ;

    4. Seed packaging : various containers, closed or open storage

    Long-term bank

     •  Temperature：-18~2±2℃

     •  Relative humidity：≤50%RH

    		20~50years

    1. Long-term storage of seeds to ensure that the genetic integrity of seeds is maintained for more than 20 years

    2. Conserved germplasm resources are generally closed for distribution, and only seed for propagation is provided to medium-term banks and original seed supply units

    3. Seed moisture content: 5% ± 2%

    4. Regular monitoring of seed viability

    Duplicate bank

     •  Temperature：-18~2±2℃

     •  Relative humidity：≤50%RH

    		20~50years

    1. Used for long-term germplasm resources for duplicate preservation, storage conditions consistent with the long-term bank

    2. Generally no vitality monitoring during storage, periodic registration of operation required


    • Product Features and Principles


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    ➤   Safety Issues

    Considering that germplasm repositories are used for long-term and indefinite protection of germplasm resources, factors such as quake-proof, water-proof, fire-proof, geologic hazards, and accidents should be taken into account in the design and construction process.


    ➤   Reliability Issues

    The purpose of germplasm repository is to extend the lifespan of seeds as much as possible. Providing stable, reliable low-temperature and low-humidity storage conditions is essential for achieving this.


    ➤   Rational Layout

    The overall layout design should fully consider the pre-storage process.


    ➤   Operational Energy Consumption

    Given that the germplasm repository needs to operate continuously for many years, energy consumption for cooling and dehumidification should be considered to reduce carbon emissions. This includes minimizing the use of high-power dehumidifiers, using central chiller units for larger scales, and adopting heat pump methods for cooling and dehumidification.


    •  Overall Design Plan


    ➤  1. Storage Body: The walls use 50~100mm polyurethane insulation panels, and the floor uses polyurethane insulation panels with embossed aluminum plates. The door frame and door seams are equipped with moisture-proof and anti-freeze electric heating strips. Based on the on-site construction environment, the low-temperature storage floor should consider thermal insulation, anti-freeze treatment, and vapor barrier moisture-proof treatment.


    ➤  2. Refrigeration: Using fully enclosed scroll industrial compressors, which are efficient, low-noise, and durable, with oversized evaporator and condenser heat exchange areas. The refrigeration units are configured with one standby unit and one active unit, with the operational coefficient controlled within 50% to ensure long-term reliable operation.


    ➤  3. Hot Gas Defrosting: Hot gas from the refrigerant discharged by the compressor is directed into the evaporator coil through control valves, quickly melting the frost layer into water and draining it out.


    ➤  4. Dehumidification: Utilizing air conditioning units and coil heat exchangers working simultaneously under computer control to form a dehumidification cycle, eliminating the need for a separate dehumidifier.


    ➤  5. Intelligent Environmental Control System: A user-friendly interface allows convenient temperature setting. Through intelligent algorithms, the system can both cool to the set temperature and dehumidify with low energy consumption.


    ➤  6. Seed Racks: mobiles compact seed racks or stainless steel shelves.


    ➤  7. Pre-treatment Drying Equipment: Using "Double 15" drying boxes and drying rooms, with temperature set at 15°C and humidity at 15%.


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