Humidity and Temperature Datalogger Calibration for Thailand's Food and Pharma Industries

Why Temperature and Humidity Calibration Matters for Thai Food and Pharma

In food processing, pharmaceutical manufacturing, cosmetics, and cold-chain logistics, temperature and humidity control is a regulatory requirement — not just a best practice. Dataloggers and sensors that drift out of specification can silently record incorrect data, leading to:

• Product spoilage or degradation that goes undetected because the sensor reported a safe temperature
• GMP audit failures when regulators ask for calibration certificates and find none
• Import rejections by overseas buyers who require full measurement traceability documentation

Applicable Standards and Regulations in Thailand

• GMP CODEX (FDA Thailand): Requires all measurement devices in the production process to be calibrated on a defined schedule
• PIC/S GMP (pharmaceutical): Thai pharma exporters must comply with PIC/S, which requires calibration and validation of all monitoring instruments in production and storage areas
• WHO Cold Chain guidelines: Vaccines and temperature-sensitive drugs require calibrated sensors with continuous data logging
• FSSC 22000 / ISO 22000: Food safety management systems require monitoring equipment to be calibrated and traceable

Calibration vs Temperature Mapping: What's the Difference?

• Calibration: Verifies that each individual sensor reads accurately against a NIMT-traceable reference standard at multiple set points
• Temperature Mapping (Validation): Proves that an entire storage space — a cold room, incubator, or transport container — maintains uniform temperature throughout its volume under real operating conditions

The correct sequence: calibrate sensors first → use those calibrated sensors to map the space. Using uncalibrated sensors in a mapping exercise invalidates the mapping results.

What Gets Calibrated in a Temperature/Humidity Datalogger

• Temperature sensor: Multiple set points e.g., 2°C, 5°C, 25°C, 30°C depending on the operating range
• Relative humidity sensor: Typically at 30%, 50%, 75%, and 85% RH using a salt bath or reference humidity generator
• Response time: Some standards require verification that the sensor responds fast enough to detect excursions

Calibration Frequency Recommendations

• Every 12 months: Standard GMP requirement for non-CCP dataloggers
• Every 6 months: For sensors at Critical Control Points (CCPs) or in vaccine storage
• Before and after Temperature Mapping: All sensors used in a mapping exercise must be calibrated before the test begins

Finding Thai Labs Accredited for Temperature and Humidity Calibration

ThaiLabHub lists ISO 17025-accredited labs with Temperature and Humidity Measurement scope across Thailand. Search by province and scope to find the right lab for your GMP compliance needs.