YWX-120A/YWX-250A/YWX-500A 
Temperature control range: -20~65° C 
Temperature fluctuation: +/-0.5° C 
Temperature uniformity: +/-2° C 
Humidity control range: 40~95%RH 
Humidity control deviation: +/-3%RH 
Illumination: 4500lx 
Timing range: 1~99 hours/segment 
Temperature & humidity adjusting method: Balanced thermostat humidity adjusting method 
Refrigerating system/method: 2 sets of separated group, system auto switch 
Power source: AC220V+/-10% 50Hz 
Work chamber size(WxDxH)mm 
YWX-120A 450x450x600 
YWX-250A 600x600x800 
YWX-500A 700x800x900 
Outline size(WxDxH) 
YWX-120A 600x860x1570 
YWX-250A 750x1010x1770 
YWX-500A 850x1210x1870 
This product is up to the standard as following: 
Relevant term of Guidance Principle for Medicine Stability Testing in Chinese Pharmacopoeia(2010 version) 
Product application: 
It provides a long-term and stable temperature and humidity environment and illumination environments for medicine invalidation evaluation. It is suitable for accelerating test, long-term test, high humidity test and illumination test. 
Stability test condition 1 for long-term retained sample 
Temperature: 25° C+/-2° C 
Humidity: RH60+/-10% 
Time: 12 months 
Stability test condition 2 for long-term retained sample 
Temperature: 6° C+/-2° C 
Time: 12 months 
Accelerating stability test condition: 
Temperature: 40° C+/-2° C 
Humidity: RH75+/-5% 
Time: 6 months 
Illumination test condition: 
Illumination: 4500lx+/-500lx 
Time: 10 days 
Freeze-thaw test condition(special products is customized, please note when ordering) 
High temperature: 40° C thermostatic 48 hours 
Low temperature: -10° C or-20° C thermostatic 48 hours 
Cycle: 3 times 
Ultraviolet sterilization system(special products is customized, please note when ordering) 
Ultraviolet type UVC 
Disinfection time is set by customer 
UV sterilization lamp is installed in the center of the top inside 
The box, and can disinfect the inside of box, to kill the bacteria 
Effectively in the cycling air inside box, prevent the 
Contamination effectively during the period of medicine testing. 
Temperature and humidity controller: 
It adopts imported temperature and humidity controller of 7' 
Touch screen, is easy for operation 
Operation interface can choose Chinese or English display. 
Temperature and humidity real-time curve display, and 600 
-days data checking function 
USB data export function for 600-days 
P. I. D auto calculating function, for more accurate and stable 
Temperature and humidity control 
Long-distance monitor function of ethernet 
50 groups of formula satisfying the requirement of 
Pharmaceutical enterprise 
Refrigerating components: 
All main parts adopts imported original ones with reliable 
Quality 
Safety device: 
Temperature protection of inside box 
Overcurrent protection of compressor 
Overpressure protection of compressor 
Water shortage protection 
Heater overheating protection 
Light and sound alarm when trouble occurs