TJtianhe SMC 30F Osmometer
| Brand | TJtianhe |
|---|---|
| Origin | Tianjin, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | SMC 30F |
| Pricing | Available Upon Request |
Overview
The TJtianhe SMC 30F Osmometer is a precision cryoscopic osmometer engineered for reliable, repeatable measurement of osmolality in pharmaceutical, biopharmaceutical, and clinical laboratory applications. It operates on the principle of freezing point depression—a thermodynamically robust colligative property directly proportional to the total solute concentration in aqueous solutions. By accurately detecting the temperature at which a sample transitions from liquid to solid phase (i.e., the freezing point), the instrument calculates osmolality in milliosmoles per kilogram of water (mOsm/kg H₂O). Designed for routine quality control of parenteral drugs, ophthalmic solutions, dialysates, and cell culture media, the SMC 30F delivers consistent performance under regulated laboratory conditions and aligns with core methodological expectations outlined in USP , EP 2.2.35, and ISO 13964.
Key Features
- Cryoscopic measurement principle ensuring high accuracy and traceability to fundamental physical constants
- Dual-sensor thermal detection system for enhanced signal stability and reduced drift during freezing curve analysis
- Automated sample aspiration and cell rinsing cycle minimizing carryover and operator dependency
- Integrated Peltier-based cooling module with precise ±0.001 °C temperature control over the critical −10 °C to +5 °C range
- Compact benchtop footprint (280 × 320 × 220 mm) optimized for GMP-compliant QC laboratories with limited space
- Calibration verification using certified reference standards (e.g., 0.300 mOsm/kg and 1.000 mOsm/kg NaCl solutions) compliant with internal audit requirements
Sample Compatibility & Compliance
The SMC 30F accepts aqueous samples with typical volumes of 50–100 µL and accommodates a broad range of formulations including saline buffers, monoclonal antibody preparations, lyophilized reconstitutes, and small-molecule injectables. It is not intended for highly viscous, non-aqueous, or volatile organic solvent-based matrices. The instrument supports documentation workflows aligned with GLP and GMP environments: all calibration events, user logins, measurement timestamps, and result exports are timestamped and stored locally. While the device itself does not provide electronic signature capability or 21 CFR Part 11-compliant audit trails out-of-the-box, its data output format (CSV/ASCII) enables integration into validated LIMS or ELN platforms where full regulatory compliance is managed at the system level.
Software & Data Management
The SMC 30F is operated via embedded firmware with an intuitive LCD interface and tactile keypad navigation—no external PC required for basic operation. Measurement data—including raw freezing curves, calculated osmolality, standard deviation across replicates, and calibration status—are displayed in real time and can be exported via USB flash drive in plain-text format. Optional Windows-compatible software (TJtianhe OsmoView v2.1) provides expanded functionality: batch report generation, trend charting over time, comparative analysis between batches or formulations, and export to PDF or Excel for inclusion in regulatory submissions. All software modules undergo version-controlled release management, with revision history and validation support documentation available upon request.
Applications
- Final product release testing of intravenous infusions and sterile injectables per pharmacopoeial specifications
- In-process monitoring of buffer exchange and diafiltration steps during downstream bioprocessing
- Stability-indicating assay for osmolality shifts in accelerated and long-term storage studies
- Verification of isotonicity in ophthalmic and nasal spray formulations prior to clinical use
- Supporting comparability protocols for biosimilar development and post-approval manufacturing changes
- Academic research in cell physiology where extracellular osmotic pressure modulation affects membrane integrity and signaling pathways
FAQ
What is the typical measurement range of the SMC 30F?
The instrument is validated for measurements from 0 to 3000 mOsm/kg H₂O, covering the full spectrum of pharmaceutical dosage forms—from hypo-osmolar oral rehydration solutions to hyperosmolar contrast agents.
Does the SMC 30F require daily recalibration?
No. Calibration is performed before each analytical session using two certified standards; however, a full system suitability check—including blank determination and reproducibility assessment—is recommended at the start of each shift in regulated environments.
Can the SMC 30F measure protein-containing samples without interference?
Yes. Cryoscopic osmometry is inherently insensitive to macromolecular size or charge; only total solute particle concentration contributes to freezing point depression—making it ideal for complex biologics.
Is maintenance service available outside mainland China?
TJtianhe partners with authorized service providers in select APAC and European markets; technical support and spare parts logistics are coordinated through regional distributors under formal service agreements.
