Humidity testing system C870M

water vaporloss on dryingfor volatile material

Overview
The C870M Integrated Loss-on-Drying Testing System uses a gravimetric method and is manufactured to comply with pharmacopoeias and food/chemical testing standards. It is intended for automated determination of loss-on-drying and moisture content in pharmaceutical, food and chemical samples.

Product Features
Precise, traceable and convenient measurement

• Independent dual‑chamber design separates drying and weighing to prevent high‑temperature effects on the balance.
• Automatic sample weight determination reduces operator influence.
• Optional German-imported touchscreen balance with repeatability to 0.05 mg; standard balance 0.1 mg.
• Visualized balance interface and traceable measurement data.
• Internal calibration balance allowing quick disassembly and maintenance.

Safe and compliant: standardized processes for safer operation

• Automatic test‑cup lid opening/closing for compliant handling.
• Automatic temperature adjustment to ensure true room‑temperature weighing.
• Fully enclosed, zero‑leakage test chamber to prevent hazardous gas escape.
• Nitrogen circulation and discrete electrical control for dual safety protection.
• Sensors with audible and visual alarms for operational safety.

Intelligent and efficient: fully automated processes

• Fully automatic gripper handles rapid movement of up to 12 test cups.
• Bidirectional rotation control and adjustable number of rotating cups simplify cup filling.
• Automatic liquid cooling operations (fill/drain/level detection) reduce manual intervention.
• Drying, cooling and room‑temperature weighing operate automatically without human intervention.
• 10.1" medical‑grade touchscreen enables standalone host operation.
• Desktop host design saves bench space and adapts to different lab layouts.
• Embedded network port supports remote control and firmware upgrades.
• Professional software suite supports GMP traceability and optional 21 CFR Part 11 compliance.
• Multi‑level user access control with configurable permissions and electronic signature support.

Testing principle
Mix the sample thoroughly (reduce crystals to < 2 mm if needed). Take approximately 1 g or the specified mass, place into a test cup dried to constant weight and weigh accurately. Unless otherwise specified, dry at 105 ℃ to constant weight. Calculate loss‑on‑drying from the mass loss relative to the sample mass.

Reference standards

• USP, EP, BP, JP, ChP and related pharmacopeias.
• GB 5009.3‑2016 and other food testing standards.
• GB/T 6284, JIS K 0068 and other chemical testing standards.

Applications

• Pharmaceuticals: Determination of loss‑on‑drying and moisture content for API, excipients and finished products.
• Food: Moisture and loss‑on‑drying testing for raw and processed foods.
• Chemicals: Loss‑on‑drying testing for chemical products and intermediates.

Technical parameters (selected)

• Model: C870M
• Test range (mg): 0.3–40000 (standard); 0.05–20000 (optional)
• Resolution (mg): 0.1 (standard); 0.01 (optional)
• Repeatability (mg): ±0.3 (standard); ±0.05 (optional)
• Temperature range: room temperature – 130 ℃; fluctuation ±0.5 ℃
• Test pressure: 0 to −20 kPa (customizable)
• Test stations: 12
• Test cup volume: 40 mL (standard, customizable)
• Gas: compressed air (user‑supplied); gas source pressure 0.5–0.7 MPa
• Port size: Φ8 mm polyurethane tube
• Host dimensions: 63 cm × 105 cm × 73 cm
• Power supply: 120 VAC ±10% 60 Hz or 220 VAC ±10% 50 Hz
• Net weight: 180 kg

Product configuration

• Standard: instrument host, balance (0.1 mg), liquid cooling module, gas drying module, 12 test cups, Φ8 mm polyurethane tube.
• Optional: GMP computer system, 21 CFR Part 11 support, higher‑precision balance (0.01 mg), air compressor, additional test cups and weights.

Notes

• Product features depend on the selected technical specifications and configuration.
• Parameters were measured in manufacturer laboratories under specified conditions; actual results may vary.
• Test pressure and cup volume can be customized; delivered test range may change with configuration.