Labthink ERT-01 Evaporable Residue Tester per GB/T 9740
| Brand | Labthink |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | ERT-01 |
| Pricing | Available Upon Request |
Overview
The Labthink ERT-01 Evaporable Residue Tester is a dedicated laboratory instrument engineered for the quantitative determination of non-volatile residue—commonly referred to as “evaporable residue”—in chemical reagents, solvents, pharmaceutical excipients, packaging extractables, and process liquids. It operates in strict accordance with the Chinese national standard GB/T 9740–2008, Determination of Evaporable Residue in Chemical Reagents, which specifies gravimetric methodology based on controlled evaporation and subsequent weighing of residual solids after solvent removal under defined thermal conditions. The system employs a precision temperature-controlled heating block or hotplate assembly, calibrated aluminum or platinum evaporation dishes, and integrated timing logic to ensure consistent thermal exposure duration and reproducible drying profiles. Unlike general-purpose ovens, the ERT-01 is purpose-built to minimize convective loss, prevent splattering, and maintain uniform heat distribution across multiple sample positions—critical factors for achieving inter-laboratory comparability and regulatory acceptability.
Key Features
- Compliance-ready design aligned with GB/T 9740–2008 procedural requirements, including specified dish geometry, heating temperature range (typically 105 °C ± 2 °C), and minimum drying duration (≥3 h)
- Dual-channel or multi-position heating block (configurable) enabling parallel processing of up to six samples per run without cross-contamination
- Integrated digital timer with audible end-of-cycle alert and automatic power-down safety protocol
- Stainless-steel chamber housing with heat-resistant insulation and front-access door for rapid dish loading/unloading
- Calibration traceability support: built-in mounting points for NIST-traceable PT100 sensors and documentation templates for IQ/OQ validation
- Modular dish holder system compatible with standard 50 mL and 100 mL aluminum or platinum evaporating dishes (ASTM E177-compliant dimensional tolerances)
Sample Compatibility & Compliance
The ERT-01 accommodates aqueous and organic solutions—including acetone, ethanol, methanol, ethyl acetate, hexane, and dilute acid/base mixtures—provided volatility and thermal stability permit complete solvent removal below 120 °C. It is routinely deployed in QC laboratories validating raw material purity per GB/T 601 (chemical reagent standards), USP General Chapter <231> (Heavy Metals), and ISO 10993–12 (biological evaluation of medical device extractables). While GB/T 9740 is its primary reference, the instrument’s operational envelope supports adaptation to related protocols such as ASTM D129 (sulfur content in petroleum products, where residue quantification serves as an indirect proxy) and internal SOPs requiring residue limits ≤10 mg/L or ≤50 ppm. All mechanical and thermal components are constructed from 316 stainless steel and borosilicate glass-rated materials to resist corrosion from aggressive solvents and repeated cleaning cycles.
Software & Data Management
The ERT-01 operates as a standalone hardware platform without embedded software or touchscreen interface—intentionally designed to eliminate electronic complexity, reduce qualification burden, and maximize long-term reliability in regulated environments. User-defined parameters (temperature setpoint, dwell time) are entered via rotary encoder and LED display. All measurement data—including operator ID, batch number, dish tare mass (recorded pre- and post-test on external analytical balance), and environmental ambient conditions—are documented manually or via LIMS-integrated electronic lab notebooks (ELN). This architecture ensures full compliance with FDA 21 CFR Part 11 when paired with validated balance systems featuring audit trail, electronic signature, and role-based access control. Instrument logs, calibration records, and preventive maintenance history are maintained externally in accordance with GLP and GMP documentation practices.
Applications
- Quality control of laboratory-grade and industrial-grade chemical reagents (e.g., HPLC solvents, catalyst precursors, buffer salts)
- Extractable residue screening of plastic, rubber, and coated packaging materials used in pharmaceutical and food contact applications
- Validation of cleaning efficacy in multi-product API manufacturing facilities (residue carryover assessment)
- Supporting ICH Q5C stability studies where non-volatile impurities may accumulate during accelerated storage
- Environmental monitoring of wastewater treatment effluents where total dissolved solids (TDS) correlate with evaporable residue load
FAQ
What standards does the ERT-01 explicitly support?
The instrument is configured and validated for GB/T 9740–2008. Its thermal performance and dish geometry also align with technical requirements referenced in ISO 3696 (water for analytical use) and USP <645> (conductivity and TOC testing, where residue limits serve as secondary verification).
Can the ERT-01 be used for volatile organic compound (VOC) analysis?
No. It measures non-volatile residue only. VOC quantification requires gas chromatography (GC) or headspace analysis systems—not gravimetric evaporation.
Is third-party calibration certification available?
Yes. Labthink provides optional factory calibration reports traceable to CNAS-accredited laboratories, including uncertainty budgets for temperature uniformity and timer accuracy per JJG 874–2007.
What balance specifications are recommended for use with the ERT-01?
A Class I analytical balance (ISO/IEC 17025 accredited) with readability ≤0.1 mg, repeatability ≤0.1 mg, and capacity ≥200 g is required to meet GB/T 9740 mass tolerance criteria.
