HM-STY1 Freezing Point Osmometer

Product Introduction

The HM-STY1 is a benchtop freezing point osmometer designed for laboratories that require accurate and repeatable osmolarity measurements across a broad range of aqueous solutions. Based on Raoult's freezing point depression principle, the instrument uses advanced semiconductor cooling technology paired with a high-precision thermistor probe to detect minute temperature changes during the crystallization process. This approach enables measurement from 0 to 3,000 mOsmol/kg with a resolution of 0.005 mOsmol/kg.

Running on an Android 10 operating system, the HM-STY1 provides an intuitive touchscreen interface with five-level user permission management, ensuring that operators access only the functions appropriate to their role. The system supports multi-language switching, making it suitable for multinational laboratory teams. A typical measurement cycle in precision mode completes in approximately 70 seconds, and the instrument can process up to 50 samples per hour, accommodating demanding throughput requirements.

The HM-STY1 is particularly well suited for pharmaceutical quality control environments where injection solutions, ophthalmic preparations, and dialysis fluids must meet strict osmolarity specifications. It is also widely used in biotechnology for cell culture media monitoring and in cosmetics formulation research. For laboratories that require comprehensive audit trail capabilities, the HM-STY2 model offers additional data integrity and compliance features.

Applications

• Pharmaceutical quality control: Osmolarity testing of injections, eye drops, infusion solutions, and hemodialysis fluids
• Biotechnology: Monitoring osmotic pressure of cell culture media, fermentation broths, and vaccine formulations
• Clinical diagnosis: Body fluid osmolarity analysis including serum, urine, and cerebrospinal fluid
• Food and beverage: Quality control of functional drinks, dairy products, and processed food liquids
• Cosmetics: Osmolarity evaluation of skincare formulations, toners, and serum products
• Scientific research: General-purpose osmolarity measurement in academic and institutional laboratories

Functional Performance

1. Android 10 platform: Modern operating system with intuitive touchscreen navigation and multi-language support
2. Five-level permission management: Role-based access control ensures operators interact only with authorized functions
3. High-precision thermistor: Accurately captures subtle temperature changes for reliable osmolarity readings
4. 70-second rapid cycle: Precision mode delivers results in approximately 70 seconds; fast mode available for higher throughput
5. Semiconductor cooling system: New-generation refrigeration provides fast cooldown, precise temperature control, and reduced weight
6. Self-service calibration: Users can select calibration points and perform adjustments on-site without sending the instrument to an external lab
7. Barcode, QR code, and NFC support: Enables automated data entry, sample identification, and wireless card reading
8. Onboard thermal printer: Prints results directly using 57 mm × 30 mm paper rolls; USB, WiFi, and LAN connectivity for data export
9. Expandable storage: Default unlimited data records with 200,000 curve storage capacity; customizable for larger datasets
10. Easy maintenance design: Probe tip is easy to wipe between samples, minimizing cross-contamination and reducing long-term operating costs

Main Parameters

Parameter	Value
Measurement Range	0 ~ 3,000 mOsmol/kg
Resolution	0.005 mOsmol/kg
Sample Volume	50 ~ 100 µL
Testing Speed	Up to 50 samples/h
Linear Error	≤ ±6 mOsmol/kg (≤400 mOsmol/kg); ≤ ±1.5% (>400 mOsmol/kg)
Repeatability	≤ 2 mOsmol/kg (≤400 mOsmol/kg); CV ≤ 0.75% (>400 mOsmol/kg)
Stability	≤ 2 mOsmol/kg (at 300 mOsmol/kg)
Cooling Time	5 min
Dimensions	360 × 300 × 240 mm (D × W × H)
Weight	7 kg

Technical Parameters

Item	Specification
Operating Principle	Raoult's freezing point depression
Operating System	Android 10
Operating Environment	Temperature: 5 ~ 35 °C; Humidity: 5 ~ 80% RH (no condensation); Altitude: <2,000 m
Storage Environment	Temperature: 5 ~ 40 °C; Humidity: 0 ~ 80% RH (no condensation)
Power Supply	AC 100–277 V, 3 A, 50/60 Hz; Max power 220 W
Data Communication	USB, WiFi, LAN (standard); 4G (optional)
Printer	Built-in thermal printer, 57 mm × 30 mm paper roll
Data Storage	Unlimited records; 200,000 curves (default)
Applicable Standards	JJG 1089-2013; Chinese Pharmacopoeia 2025 Edition
User Permission Levels	5 levels
Audit Trail	Not included (available on HM-STY2)

Address of this article：https://www.kjhm.net/yjyq1/freezing-point-osmometer.html

• Previous: no more
• Next: Freezing Point Osmometer