Overview
The VWR 34629-918 is a precision specific gravity hydrometer designed for accurate measurement of liquid density across the 0.900–1.010 range. This free-floating instrument features a cylindrical glass stem with a ballast bulb, weighted with metal instead of lead or mercury. Ideal for laboratories, medical facilities, and quality control applications where consistent, NIST-traceable measurements are essential.
Key Features
- Measurement range: 0.900–1.010 Sp. Gr.
- Accuracy and precision: 0.1% across full range
- Metal ballast (lead-free, mercury-free) for safety and reliability
- Optically clear glass for precise meniscus reading
- NIST-traceable certification for regulatory compliance
- Hand-inspected by U.S. quality team
- Individually serialized for traceability
- Temperature standardization: 60 °F (15 °C)
Technical Specifications
- Specific Gravity Range: 0.900–1.010
- Precision: 0.1%
- Ballast Material: Lead-free metal
- Glass Type: Borosilicate (optically clear)
- Design: Plain form, free-floating
- Calibration Standard: 60 °F (15 °C)
- Certification: NIST-traceable
- Part Number: 34629-918
- Manufacturer: VWR Scientific
Typical Applications
- Medical and clinical laboratory testing
- Pharmaceutical quality control and formulation checking
- Chemical and beverage industry density verification
- Research laboratories and academic institutions
- Food and dairy industry specific gravity monitoring
- Analytical testing and compliance verification
Compatibility & Replacements
Compatible With
- Standard graduated cylinders (100 mL minimum recommended)
- Most laboratory liquid samples and solutions
- Medical and pharmaceutical formulations
- Beverages, syrups, and food products
- Chemical solutions requiring density verification
Replaces / Drop-In Replacement For
- VWR 34629-918 (same part number — direct replacement for worn or damaged units)
- Similar single-range plain-form hydrometers with 0.900–1.010 scale
Works With
- VWR CATALYST™ recalibration and certification services
- Laboratory information management systems (LIMS)
- ISO 17025-certified metrology and calibration protocols
- NIST traceability documentation and certificates of accuracy
