DELEITE VLP Series Analytical Balance
| Brand | DELEITE |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Regional Classification | Domestic (China) |
| Model Series | VLP |
| Instrument Type | Analytical Balance |
| Capacity Range | 20–6000 g |
| Readability | 10 mg / 100 mg / 1 g (model-dependent) |
| Calibration | External |
| Dimensions (W×D×H) | 270 × 190 × 110 mm |
| Pan Diameter | Ø130 mm or Ø160 mm (model-dependent) |
| Compliance | ISO 9001-manufactured |
Overview
The DELEITE VLP Series Analytical Balance is a precision laboratory weighing instrument engineered for consistent accuracy, rapid stabilization, and operational reliability in regulated and research-intensive environments. Built upon a rigid mechanical architecture with optimized damping and low-drift load cell design, the VLP series delivers high reproducibility across diverse ambient conditions—including minor air currents, temperature fluctuations, and bench vibrations. Its measurement principle relies on electromagnetic force compensation (EMFC), a standard methodology for analytical balances that ensures linear response, minimal hysteresis, and long-term stability without mechanical wear. Designed primarily for routine quality control, formulation verification, sample preparation, and educational laboratories, the VLP series meets foundational requirements for traceable mass measurement under ISO/IEC 17025 and ASTM E898-22 guidelines for balance performance verification.
Key Features
- Rapid stabilization time (< 2 seconds typical for full-scale step response), achieved through adaptive filtering and optimized transducer dynamics.
- Robust aluminum die-cast housing with anti-static coating, enhancing resistance to electrostatic interference and physical abrasion.
- Multi-unit display support: grams (g), milligrams (mg), carats (ct), ounces (oz), troy ounces (ozt), and percentage (%), configurable per user preference.
- Integrated piece-counting mode with automatic average-piece-weight calculation—ideal for component inventory and pharmaceutical tablet batch verification.
- Optional internal rechargeable battery (Li-ion, 8-hour continuous operation), enabling portable use in field labs, cleanrooms with restricted power access, or mobile QC stations.
- RS232 interface standard; optional USB-to-RS232 adapter available for direct connection to Windows-based data acquisition software or label printers.
- Auto-zero tracking and drift compensation algorithms maintain baseline integrity during extended idle periods.
Sample Compatibility & Compliance
The VLP series accommodates a broad range of sample types—from fine powders and hygroscopic solids to small metallic components and pre-weighed vials—thanks to its wide pan diameter options (Ø130 mm or Ø160 mm) and low-profile draft shield compatibility (sold separately). All models are manufactured in an ISO 9001-certified facility, with production traceability documented per batch. While not certified to OIML R76 or NIST Handbook 44 out-of-the-box, the VLP series supports external calibration using Class F1 or Class M2 weights (per ISO/IEC 17025 Annex C), and includes dedicated calibration mode with password-protected access to prevent unauthorized parameter changes. Audit trail functionality is enabled via optional PC software, supporting FDA 21 CFR Part 11-compliant electronic records when deployed with validated software configurations.
Software & Data Management
The VLP series interfaces seamlessly with DELEITE’s optional BalanceLink™ PC software (Windows 10/11 compatible), providing real-time data streaming, automated report generation (PDF/CSV), and customizable template-based logging aligned with GLP and GMP documentation standards. Software features include user-level permissions, timestamped event logs (tare, zero, calibration, print), and export-ready metadata (operator ID, location tag, environmental notes). When paired with certified thermal label printers, the system generates compliant weight labels with embedded batch ID, date/time stamp, and uncertainty annotation fields. Raw data output adheres to ASTM E2655-21 formatting conventions for interoperability with LIMS platforms.
Applications
- Pharmaceutical: Active ingredient dispensing, excipient ratio verification, capsule fill weight checks.
- Chemical & Materials Science: Catalyst dosage, polymer blend proportioning, nanomaterial dispersion quantification.
- Food & Beverage: Nutritional labeling compliance, additive concentration validation, portion control auditing.
- Academic & Training Labs: Stoichiometric experiment setup, density determination via mass/volume correlation, error propagation studies.
- Environmental Testing: Filter weight gain analysis (TSP, PM2.5), soil moisture content gravimetry.
FAQ
What calibration standards are recommended for routine verification?
Class F1 stainless steel weights (for capacities ≤ 200 g) or Class M2 weights (for ≥ 200 g) per ISO 9001 and EURAMET cg-18 guidelines.
Is internal calibration available on any VLP model?
No—external calibration is standard across the entire VLP series; no built-in motorized calibration mass is included.
Can the balance be used in a Class A/B cleanroom environment?
Yes, provided the optional acrylic draft shield is installed and the unit is operated within specified temperature (15–30 °C) and humidity (30–70% RH non-condensing) ranges.
Does the RS232 interface support Modbus RTU protocol?
No—only ASCII-based command protocol is supported; Modbus requires third-party gateway integration.
What is the warm-up time required before first use?
Minimum 30 minutes at stable ambient temperature to ensure thermal equilibrium of internal electronics and load cell.
