KEM AT-710M Quad-Channel Advanced Automatic Potentiometric Titrator
| Brand | KEM (Kyoto Electronics Manufacturing) |
|---|---|
| Origin | Japan |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Imported Instrument |
| Model | AT-710M |
| Instrument Type | General-Purpose Potentiometric Titrator |
| Application Scope | Universal Analytical Titration |
| Measurement Range | pH: −20.000 to +20.000 |
| mV | −2000.0 to +2000.0 |
| Temperature | 0 to 100 °C |
| Burette Accuracy (20 mL) | ±0.02 mL |
| Burette Resolution (20 mL) | 0.001 mL |
| Dispensing Precision (20 mL) | ±0.01 mL |
| Burette Resolution Ratio | 1/20,000 |
Overview
The KEM AT-710M Quad-Channel Advanced Automatic Potentiometric Titrator is an engineered platform for high-integrity volumetric analysis based on potentiometric endpoint detection. It operates on the fundamental principle of potentiometry: as titrant is incrementally delivered into the analyte solution, the potential difference between a reference electrode and an indicator electrode changes continuously. At the stoichiometric equivalence point—where reaction completion induces a sharp inflection in electrode potential—the instrument detects the endpoint via first- or second-derivative analysis of the E–V curve. Designed for laboratories requiring concurrent multi-method, multi-sample, or multi-parameter titrations, the AT-710M integrates four independent titration channels within a unified control architecture. Its modular design supports co-located operation with KEM’s moisture analyzers (e.g., MKV-710 series) and enables synchronized data acquisition across heterogeneous electrochemical measurement types—including acid-base, redox, precipitation, complexometric, photometric, polarographic, and conductometric titrations.
Key Features
- 8.4-inch full-color TFT-LCD touchscreen interface with intuitive graphical navigation and real-time titration curve visualization (E vs. V, dE/dV, d²E/dV²)
- Simultaneous control of up to four KEM titration units—including AT-710 series potentiometric titrators and MKV-710 series Karl Fischer moisture analyzers—via a single MCU-710M master controller
- Smart burette module with embedded EEPROM chip storing titrant identity, concentration, expiration date, and calibration history
- Intelligent electrode cable with integrated memory for automatic electrode type recognition, serial number logging, and usage tracking
- Low-dead-volume burette assembly featuring brown-light-shielding glass tubing and anti-diffusion tip design to minimize reagent consumption and evaporation error
- Bluetooth-enabled remote operation capability for safe execution inside fume hoods or hazardous environments without physical proximity
- Multi-level user permission system (administrator, supervisor, operator) with password protection and parameter lockdown to prevent unauthorized configuration changes
- Dual-channel potential monitoring supporting concurrent acquisition from two independent electrodes (e.g., pH + photometric sensor or redox + ion-selective electrode)
- On-device PDF report generation with GLP-compliant metadata: timestamp, operator ID, method name, titrant lot, electrode ID, ambient temperature, and raw curve export
Sample Compatibility & Compliance
The AT-710M accommodates aqueous and non-aqueous matrices across diverse industrial and regulatory domains—including pharmaceutical QC (USP , EP 2.2.20), food acidity testing (AOAC 940.04, ISO 928), petrochemical neutralization number (ASTM D974, D664), water alkalinity/hardness (ISO 9963-1, EPA 310.1), and environmental COD determination (ISO 6060). Its wide pH range (−20.000 to +20.000) and extended mV span (±2000.0 mV) support unconventional titrants (e.g., tetrabutylammonium hydroxide in acetonitrile) and low-solubility precipitates. The system meets IEC 61010-1 safety standards and incorporates hardware-level temperature compensation for titrant density correction. All firmware and method storage comply with ALCOA+ principles; audit trails record every parameter modification, method execution, and data export event—fully traceable for FDA 21 CFR Part 11 and EU Annex 11 validation.
Software & Data Management
Control and data handling are managed through KEM’s proprietary Tiamo™-compatible firmware (v4.x), supporting method creation, validation, and version control directly on the device. Up to 120 pre-programmed standard methods—including ASTM D4739 (TBN), ISO 8239 (free fatty acids), and USP (sodium thiosulfate assay)—are factory-installed. Users may combine up to five base methods into hierarchical workflows for sequential or conditional titrations (e.g., acid number followed by peroxide value). Data storage includes 500 sample records with full curve snapshots, statistical summaries (mean, SD, RSD), blank subtraction, and titer normalization. Raw data exports via USB to FAT32-formatted drives support CSV, TXT, and native .KEM binary formats. LAN connectivity enables integration into LIMS via TCP/IP protocols; RS-232 and SS-BUS ports support legacy peripherals including CHA-600/CHA-700 autosamplers and thermal printers.
Applications
The AT-710M serves as a primary analytical tool in regulated quality control laboratories performing routine and method-developed titrations. Key use cases include: quantification of total acid number (TAN) and total base number (TBN) in lubricants and fuels; determination of chloride in wastewater per ISO 9297; assay of active ingredients in APIs using argentometric or complexometric endpoints; measurement of free sulfur dioxide in wine (AOAC 990.22); and dual-parameter titration of mixed acid systems (e.g., HCl + CH₃COOH) via Gran plot analysis. Its photometric and polarographic modules extend utility to turbidimetric sulfate assays and iodometric copper determinations where conventional potentiometric detection is compromised.
FAQ
What titration methods are pre-installed on the AT-710M?
The instrument ships with 120 validated standard methods covering acid-base, redox, precipitation, and specialized applications such as petroleum neutralization number, COD, and pKa determination.
Can the AT-710M perform temperature-compensated titrations?
Yes—integrated Pt100 temperature sensing enables real-time correction of titrant volume based on thermal expansion coefficients, referenced to 20 °C per ISO 3696 and ASTM E200.
Is the system compliant with 21 CFR Part 11 requirements?
All electronic records include immutable audit trails, electronic signatures, and role-based access controls—fully configurable for Part 11 and Annex 11 compliance during IQ/OQ/PQ validation.
How many electrodes can be monitored simultaneously?
Two independent electrochemical signals (e.g., pH + mV, or dual-reference redox pairs) may be acquired and displayed in real time.
What burette sizes are supported?
Standard configuration uses a 20 mL glass burette with ±0.02 mL accuracy; optional 1 mL, 5 mL, and 10 mL burettes are available for micro- or semi-micro applications.
