During a drug regulatory inspection, the inspector asks for environmental monitoring records for your manufacturing area for the past three months. If your answer is a handwritten register with one humidity reading per shift — recorded whenever the operator remembered — you have a problem. If your answer is a USB pen drive with timestamped humidity and temperature records logged every five minutes across all critical areas, you have a very different conversation.
Many pharmaceutical manufacturers confuse two distinct requirements that must both be met:
| Requirement | What It Means | Instrument Needed |
|---|---|---|
| Control | Maintain humidity within specified limits automatically | Humidity Controller (7217-CAP, 7214) |
| Recording | Create continuous timestamped log of actual conditions | Data Logger (CT700) |
| Display | Show current conditions visibly in the area | Wall Indicator (7100W-CAP) |
All three are required in a well-compliant pharmaceutical facility. A controller maintains the set point. A data logger creates the audit trail. A display gives area personnel immediate visibility of current conditions.
A humidity excursion in a tablet manufacturing area — moisture absorption affecting dissolution — can lead to batch rejection, market withdrawal, or regulatory action. The cost of a Countronics humidity controller and data logger is a fraction of the cost of a single batch rejection — and provides continuous protection 24 hours a day.
No proprietary software. No licence fees. No data transfer cables. The CSV file opens directly in Microsoft Excel and can be attached to batch records, included in stability reports, or presented to regulatory inspectors as-is.
Regulatory inspectors increasingly ask not just for environmental records but for calibration certificates for the monitoring instruments. Countronics humidity instruments are manufactured under ISO 9001:2015 quality management and can be supplied with calibration documentation. Periodic recalibration using a reference hygrometer is recommended annually for GMP compliance.
Requirements vary by area and product. Typical limits are 45–65% RH for general manufacturing, below 50% RH for moisture-sensitive areas. Schedule M and WHO GMP require limits to be defined, monitored continuously, and documented for each classified area.
Control = automatically maintaining RH within limits using a controller and humidifier/dehumidifier. Monitoring = continuously recording actual conditions to create a documented compliance record. Both are required — a controller maintains conditions while a data logger creates the audit trail.
The CT700 humidity and temperature data logger records both RH% and temperature to USB pen drive in Excel CSV format with timestamps — suitable for stability chamber monitoring. Data opens directly in Microsoft Excel without any special software.
At minimum annually with traceable certificates. Critical areas often require semi-annual or quarterly calibration checks. Countronics instruments can be supplied with calibration documentation on request.
Yes. CT700 is used in pharmaceutical and electronics cleanrooms, logging humidity and temperature continuously to document that conditions stayed within specified limits during production — essential for GMP regulatory compliance.
We will recommend the right controller and data logger for each area with specifications and pricing within 24 hours.
