1. [High Precision]: Our constant temp. & humidity test chamber adopts PID microcomputer intelligent temperature and humidity controller with high precision. Temperature fluctuation is ±0.5℃, and humidity deviation is ≤±3%RH. The product can be used as a medicine stability test chamber.
2. [Pro-environment and Eco]: The BOD refrigerated incubator uses the International famous brand compressor and environmentally friendly fluorine-free refrigerant (R134a), which is high efficiency, low energy consumption and environmental protection. The insulation layer is perfused with rigid polyurethane, which is firm and durable, high efficiency and energy saving.
3. [High-safety]: This medicine assay box has the incubator overheat protection alarm function, compressor overheat, over-pressure, overload protection function, and humidifier system water shortage protection alarm function, to ensure the safe operation of the experiment without accidents.
4. [Excellent Design]: The precision constant temperature humidity test chamber is equipped with the liquid crystal program controller, which allows to preset 99 cycles and 30 segments program, and the setting time of each segment is 1~ 9999min. The temperature and humidity data can be printed by embedded printer in real time or be exported in an unchangeable file format using a USB flash drive for viewing and backup. A maximum of 250,000 data records can be saved.
5. [Unique Water Circulation System]: Our medicine stability test chamber adopts dual built-in water tank and external water storage tank. The water enters the main water tank after preheating the auxiliary water tank. The main water tank is heated and humidified. It can reduce the influence of external cold water pumped directly into the box on temperature and humidity fluctuations.
250L Precision Constant Temperature Humidity Test Chamber Medicine Stability Test Chamber BOD Refrigerated Incubator
Implement and meet standards:
GMP, FDA and ICH related manufacturing standards
1. Storage conditions for stability tests of long-term samples:
· Temperature:+25℃ ± 2℃
· Humidity:60±5%RH
· Length of time:12 months
2. Storage conditions for accelerated stability tests:
· Temperature:+40℃ ± 2℃
· Humidity:75±5%RH
· Length of time:6 months
3. Storage conditions for middle tests:
· Temperature:+30℃ ± 2℃
· Humidity:65±5%RH
· Length of time:6 months
4. In low-density drug containers test:,for example Prepared infusion bags, plastic safety parts, eye preparation containers, etc
· Temperature:+40℃ ± 2℃
· Humidity:25%±5%RH
· Temperature:+25℃ ± 2℃
· Humidity:40%±5%RH
Performance characteristics
Technical Parameter:
| Model number | SHH-250SD | |
| Volume (L) | 250 | |
|
Temperature °C
| Control Range | 0 - 65 |
| Resolution | 0.1 | |
| Degree Of Fluctuation | ±0.5 | |
| Degree Of Uniformity | 1.2 | |
| Humidity (% RH) | Control Range | 35 - 95%RH (temperature≥40℃,Minimum humidity accessible 20%RH） |
| Resolution | 0.1%RH | |
| Precision | Single point fluctuation ≤ ± 1% RH, multipoint deviation ≤ ± 3% RH, multipoint uniformity ≤5% RH | |
| Temperature And Humidity Data | Temperature: measure 9 points | |
| Power (W) | 1530 | |
| Voltage (V) | 110 | |
| Dimension Of Inner Body (mm) | 500 × 430× 1050 | |
| Boundary Dimension (mm) | 570 × 570 × 1600 | |
| Support Shelf | 4 | |
※Under no-load condition, the test parameters are as follows: ambient temperature 20 °C, ambient humidity 50% rh
We suggest adding purified water,Prevent excessive impurities in the water tank from causing humidification problems
Analysis of Measured Data
Temperature and humidity test distribution diagram
T1,T2,T3,T4,T5,T6,T7,T8,T9 Temperature probe;H1,H2,H3 Humidity probe
They are placed on the upper, middle and lower layers of the box
The Verification instrument records continuously for 30min, and records a piece of data every 1min. There are 30 temperature recorded values in each of the 9 positions(T1,T2,T3,T4,T5,T6,T7,T8,T9）.There are 30 humidity recorded values in each of the 3 positions (H1,H2,H3）.
Volatility is a channel analysis to prove the stability of each position of the equipment. There are 9 volatility in 9 positions
Temperature fluctuation at T1 position=±(T1 temperature max - T1 temperature min）/2
Temperature fluctuation at T2 position=±(T2 temperature max - T2 temperature min）/2
and so on T3......T9
Humidity fluctuation at H1 position=±(H1 humidity max - H1 humidity min）/2
Humidity fluctuation at H2 position=±(H2 humidity max - H2 humidity min）/2
Humidity fluctuation at H3 position=±(H3 humidity max - H3 humidity min）/2
Temperature fluctuation＜±0.5℃
Humidity fluctuation ＜±1%RH
Uniformity is an overall analysis. The smaller the uniformity, the closer the temperature and humidity at each position, and the better the performance
There are 9 temperature records(T1-T9） and 3 humidity records(H1-H3） at each time point
At this point in time,Temperature Uniformity:temperature max - temperature min;Humidity Uniformity:humidity max - humidity min
Once a minute,,a total of 30 records,Then take the average value
;
Temperature Uniformity＜1.2℃;Humidity Uniformity＜5%RH
For the constant temperature and humidity boxes of many other manufacturers, the marked temperature and humidity parameters are not real indicators (because the display value of the machine controller can be adjusted, the display error deviation), the displayed value seems stable, and there is a great error between the actual value and the value measured inside the machine, which cannot be verified qualified by the professional inspection organization.