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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. [LED and UV Illuminating]: The constant temperature humidity test chamber is equipped with the LED and UV illuminating function. The illumination intensity can be stepless adjusted to reduce luminance attenuation and test error due to lamp aging.
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.
1. Temperature and humidity stability
Our products adopts the balanced control mode (The heating and humidification amount is equal to the damp heat loss）, and the temperature and humidity are very stable. The parameters we mark are real and achievable. We often go to the customer's site to verify our equipment. We will use the verifier to measure the temperature and humidity of 9 positions and 3 positions in the box, analyze the measured data and obtain the verification report approved by the customer.
2. Large temperature and humidity control range
Our products: The minimum humidity can reach 35% RH and the maximum humidity can reach 95% RH
For the constant temperature and humidity boxes of many other manufacturers,Humidity cannot be controlled when the temperature is higher than 50 ℃ or If the humidity is lower than 50%, it cannot be stable.
3. Stable operation
Our products can work continuously for more than 1 year without shutdown, and the failure rate is very low.
For the constant temperature and humidity boxes of many other manufacturers :It can not work continuously for a long time and has a high failure rate.
4. Energy consumption
Our products has low operating power and low energy consumption.Our products use polyurethane foam insulation layer, which has good thermal insulation, and the power is only about 1kW.
For the constant temperature and humidity boxes of many other manufacturers: Large volume, power, noise and load
5. Water supply system
Our products:The water pump pumps water automatically without frequent manual water addition. There are no special requirements for water and electricity on site.
For the constant temperature and humidity boxes of many other manufacturers :Waterway design problems,impurities will block the pipeline, the pipeline shall be cleaned after a period of time,Very troublesome.Other manufacturers use external ultrasonic humidifiers,More questions,Add water manually frequently,Unable to reach more than 90% humidity,High failure rate of humidifier,High humidity fluctuation.
We suggest adding purified water,Prevent excessive impurities in the water tank from causing humidification problems.
6. Humidification design
Our products design 2 built-in stainless steel water tanks, one is preheating and the other is humidification.The added cold water will first flow into the preheating water tank and then into the humidification water tank. In this way, cold water will not be directly pumped into the humidification water tank, resulting in temporary failure to humidify, thus affecting the stability of humidity.
For the constant temperature and humidity boxes of many other manufacturers only have 1 water tank.
STRUCTURE:
1. The exterior housings are made of superior cold-roll steel sheets,and the inner housing is made of brushed stainless steel.The insulating layer is made of rigid polyurethane foam.
2. Door: The door is mounted with hollow glass in its middle so as to facilitate observing the experiment effect. The door gasket is sealed together with the housing with magnetic adhesive.
3. Verification Hole: 30 MM
4. CASTERS: 4, movable and lockable
Control System:
1. Control mode: balanced temperature and humidity regulation
2. Airflow mode: forced vertical convection, integral duct uniform system
3. Heating mode: electric Heating System
4. Refrigeration mode: compressor refrigeration system, unique automatic pressure relief technology, long-term stable work
5. Humidification mode: Independent Research and development of electric steam humidification
6. Water supply mode: Automatic Circulating Water Supply System, no special hydropower requirements on site
7.LED and UV lamps: infinitely adjustable light intensity
The precision constant temperature humidity with LED and UV illuminating 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.
Our medicine stability test chamber adopts dual built-in water tank. The water is preheated by the preheating tank and then enters the high temperature steam humidification tank for heating and humidification to meet the programme setting requirement. It can reduce the influence of external cold water pumped directly into the box on temperature and humidity fluctuations. Another external water storage tank with water shortage alarm, after filling 25℃, 60%RH can be used for a month.
The precision constant temperature humidity with LED and UV illuminating test chamber adopts forced vertical convection system, which has the high-quality stainless steel axial fan. It has a strong convection ability while achieving beauty and durable. The inner face is made of the high quality SUS 304. The support shelf is made of round steel and sprayed with plastic. 4 support shelfs are provided and the height is adjustable.
The precision constant temperature humidity incubator has the layered arrangement LED and 365nm UV illuminating lamp tube. You can control the irradiation intensity by the stepless adjuster based on the test requiement. The actual irradiation intensity can be monitored by a monitoring instrument.
GMP, FDA and ICH related manufacturing standards
1. Storage conditions for stability tests of long-term samples:
2. Storage conditions for accelerated stability tests:
3. Storage conditions for middle tests:
4. Illumination tests
Experimental Data Graph
Technical parameter:
Model number
SHH-250GSD
Volume (L)
250
Temperature °C
Control Range
With illumination 10 - 65℃, No illumination 0 - 65℃
Resolution
0.1
Degree Of Fluctuation
±0.5
Degree Of Uniformity
1.2
Humidity (% RH)
35 - 95%RH
0.1%RH
Precision
single point fluctuation ≤ ± 1% RH, multi point deviation ≤ ± 3% RH, multi point uniformity ≤5% RH
Temperature And Humidity Data
Illumination(cold white light)
vertical lighting, light intensity 0-10000LX,
stepless adjustable
Power (W)
1630
Dimension Of Inner Body(mm)
500 × 430 × 1050
Boundary Dimension(mm)
570 × 5700× 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.
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