Name: Drug Stability Test Chamber YDS-400
Brand: Shanghai YAlin Technology Co
SKU: YDS-400

The YDS-400 drug stability test chamber provides controlled temperature and humidity for stability studies of drugs and pharmaceutical products. It offers an LCD program controller with 99 cycles and 30 segments, a dual internal water tank circulation system, and dual data logging via embedded printer and USB, with an international-brand compressor and eco-friendly R134a refrigerant.

Key Features

LCD program controller: 99 cycles, 30 segments, 1–9999 min (h) per segment
International-brand compressor and eco-friendly CFC-free R134a refrigerant
Dual internal water tank circulation: the preheating tank reduces the impact of cold make-up water on fluctuations; external tank with water shortage alarm lasts one month at 40 °C / 75% RH
Dual data logging: embedded printer for real-time printout and USB stick for 250,000 records exported in a non-editable format
Construction: painted cold-rolled steel exterior, high-pressure polyurethane foam insulation, SUS304 mirror stainless steel interior
Key door lock, Ø30 mm verification port, 4 lockable casters, insulated glass window
Safety: compressor overheat, overpressure and overload protection; independent chamber over-temperature protection; humidifier water shortage protection and alarm

Technical Specifications

Model	YDS-400
Volume	400 L
Temperature control range	0–65 °C without light, 10–65 °C with light
Temperature resolution	0.1 °C
Temperature fluctuation	±0.5 °C
Temperature uniformity	1.2 °C
Humidity control range	35–95% RH (customisable 20–95% RH)
Humidity resolution	0.1% RH
Humidity accuracy	Single-point fluctuation ≤ ±1% RH; deviation ≤ ±3% RH; multi-point uniformity ≤ 5% RH
Measuring points	9 temperature and 3 humidity points
UV light (optional)	320–400 nm, irradiation energy ≥ 200 W·h/m², irradiance 80–100 µW/cm²
Power	1530 W
Power supply	220 V / 50 Hz
Chamber size (W×D×H)	600×550×1130 mm
External dimensions (W×D×H)	680×690×1720 mm
Shelves	4