250 liter multi-layer drug stability test box CN-250SD

Technical parameters:

Precautions for using the drug stability test box:

Environment and installation: Place in a ventilated and dark place, maintain a distance of more than 10cm from the wall, and keep away from heat sources and corrosive gases; Ensure that the power supply is well grounded and equipped with a voltage regulator to avoid voltage fluctuations affecting equipment accuracy.

Operating standards: Set temperature, humidity, and lighting parameters according to ICH or pharmacopoeia requirements, place samples evenly, and avoid blocking sensors or ventilation openings; Reduce the number of door openings during operation to prevent sudden changes in temperature and humidity, and regularly monitor the environment inside the box with an independent recorder.

Maintenance: Clean the inner chamber with a neutral cleaner after each test, clean the humidifier filter screen weekly, and clean the condenser dust every 6 months; Calibrate temperature and humidity sensors monthly, check the sealing of door seals to prevent data deviation caused by air leakage.

Safety and emergency: It is strictly prohibited to put flammable and explosive materials. The compressor should be restarted after a 5-minute interval after shutdown; In case of power outage or malfunction, promptly record the interruption time of the test, evaluate the impact on the sample after recovery, and extend the test period if necessary.

Main features:

1250 liter multi-layer drug stability test box CN-250SDNew fluorine free design, high efficiency, low energy consumption, and promotes energy conservation.

2. Adopting a special sterilized stainless steel inner liner, with a four corner semi-circular arc design, it is easy to clean and operate.

3. Microcomputer servo controller, digital temperature and humidity display.

4. LCD touch screen controller, all functions are displayed on the screen in the form of graphics and text, and the real-time running status is shown in the curve graph.

5. Continuous operation guarantee: Two fully enclosed compressor units automatically switch to ensure continuous operation of the equipment.

6. Continuous operation does not require defrosting, avoiding temperature and humidity fluctuations inside the box during use due to defrosting.

7. Adopting imported humidity sensors to avoid the troubles caused by frequent replacement of wet bands in traditional wet bulb sensors.

250 liter multi-layer drug stability test box CN-250SD safety function:

1) When the box door is opened, the gentle breeze circulation and heating automatically stop, without the problem of temperature overshoot.

2) The speed of the circulating fan is automatically controlled to avoid sample evaporation caused by excessive wind speed.

3) It has a password lock screen function to avoid accidental operation by non experimental personnel.

4) The independent temperature limit alarm system can provide audible and visual alarms to alert the operator.

5) Temperature deviation alarm, compressor overheating, overload, overpressure protection, and water shortage protection.

Common issues with drug stability testing chambers:

The drug stability test chamber is prone to various problems during use: abnormal temperature and humidity control is a common fault, temperature exceeding or failing to meet standards is often caused by sensor damage, refrigeration/heating system failure, or air duct blockage; The humidity display shows 100% and does not decrease, often due to water accumulation or damage to the humidity sensor, which needs to be dried or replaced.

Humidification system failures are also common. Failure to humidify may be due to water shortage in the water tank, blockage of the float valve, or damage to the water pump; The humidity does not meet the standard, which may be due to incorrect humidifier parameter settings or low temperature environment limitations. In addition, the electrical system is prone to power abnormalities. If the entire machine is without power, it is necessary to check the power cord and air switch; The electrified casing is often due to poor grounding. In terms of mechanical components, slow fan speed and aging door seals can affect temperature and humidity stability, requiring regular lubrication of bearings and replacement of seals.

Daily water quality management is necessary, using distilled water and regularly cleaning the water tank can reduce malfunctions caused by plaque and scale.