KEM MKV-710 Volumetric Karl Fischer Moisture Titrator

Overview

The KEM MKV-710 is a high-precision volumetric Karl Fischer (KF) moisture titrator engineered for reliable, trace-level water quantification in pharmaceuticals, chemicals, polymers, food ingredients, and battery electrolytes. Based on the classical coulometric-free volumetric titration principle—where iodine generated *in situ* via stoichiometric reaction with water—is replaced by standardized KF reagent delivery—the MKV-710 delivers robust accuracy across wide concentration ranges (1 ppm to 100% w/w H₂O). Its modular architecture separates control, titration, and sample handling functions, enabling flexible integration into regulated laboratory environments. The system complies with core analytical validation requirements outlined in USP , EP 2.5.12, and ASTM E203, supporting method transfer, repeatability assessment, and long-term stability monitoring under GLP/GMP conditions.

Key Features

• Wireless operation capability (Bluetooth-enabled MCU-710M control unit): Enables remote titration control up to 10 m from the MKV-710 titration module—critical for hazardous fume hood deployment or segregated cleanroom workflows.
• Low-dead-volume valve design: Minimizes residual reagent retention between titrant delivery cycles, improving reagent economy and reducing carryover risk during sequential analysis of volatile or viscous samples.
• Modular scalability: Supports up to four simultaneous measurement units (e.g., AT-710 potentiometric titrators, MKC-710 coulometric moisture analyzers) via SS-BUS interface, allowing consolidated data acquisition and cross-method correlation studies.
• Dual-mode titration support: Configurable for forward titration (standard KF) or back-titration (for samples reacting with iodine or requiring pre-mixing), with optional dual-burette configuration for automated reverse protocols.
• GLP-compliant audit trail: Embedded software logs operator ID, reagent batch/lot, titrant titer verification date, piston replacement schedule, and calibration history—fully traceable per FDA 21 CFR Part 11 requirements when paired with SOFT-CAP data management software.

Sample Compatibility & Compliance

The MKV-710 accommodates solid, liquid, and semi-solid matrices—including hygroscopic powders, oils, solvents, resins, and lyophilized biologics—via interchangeable titration vessels (S-type cell: 30–100 mL solvent capacity). Its dual-platinum electrode endpoint detection ensures stable polarization potential measurement even in low-conductivity media (e.g., chlorinated hydrocarbons, silicone oils). All hardware and firmware conform to IEC 61010-1 safety standards and electromagnetic compatibility (EMC) Directive 2014/30/EU. Method validation documentation aligns with ISO/IEC 17025:2017 clause 7.2.2 (method validation) and supports IQ/OQ/PQ protocol execution for regulated facility qualification.

Software & Data Management

Controlled via an 8.4-inch VGA TFT color touchscreen (800 × 600 resolution), the MKV-710 offers multilingual UI (English, Japanese, Chinese, Korean, Russian, Spanish, German, French) and real-time multi-channel display—simultaneously showing titration curve, current consumption, drift compensation, and statistical summary. Integrated SOFT-CAP software (Windows-based) enables raw data export (CSV, PDF), statistical reporting (mean, SD, RSD), blank subtraction automation, and titer database management. RS-232C × 4 ports support concurrent connection to analytical balances, thermal printers, and external LIMS; USB 2.0 host port permits direct storage to flash drives or connection to barcode scanners, foot switches, and Android tablets for mobile workflow extension.

Applications

• Pharmaceutical QC: Residual moisture testing of active pharmaceutical ingredients (APIs), excipients, and final dosage forms per USP and ICH Q5C guidelines.
• Lithium-ion battery manufacturing: Quantification of trace water in cathode/anode slurries and electrolyte solvents—critical for preventing HF generation and SEI layer instability.
• Polymer synthesis: Monitoring moisture content in polyamide, polyurethane, and epoxy precursors to prevent premature gelation or molecular weight depression.
• Fine chemical production: Verification of drying efficiency for intermediates sensitive to hydrolysis (e.g., acid chlorides, silanes, organometallics).
• Food & feed analysis: Determination of water activity-relevant moisture in spices, dairy powders, and pet food formulations compliant with AOAC 955.03.

FAQ

What is the minimum detectable water mass using the MKV-710?
The system achieves a lower limit of quantitation of 0.1 mg H₂O, dependent on titrant titer (typically 1–5 mg/mL) and burette precision (±0.015 mL absolute error).
Can the MKV-710 perform coulometric KF analysis?
No—it is exclusively a volumetric titrator. For coulometric applications, KEM recommends the complementary MKC-710 instrument, which can be networked via SS-BUS.
Is method validation support included with the instrument?
Yes—KEM provides application notes, system suitability test (SST) templates, and IQ/OQ documentation packages aligned with ASTM E2911 and ISO 8655-6 for burette performance verification.
How often must the titrant titer be verified?
Per USP , titer verification is required before each analytical sequence or at least daily; the MKV-710’s GLP mode automatically timestamps and archives all titer measurements.
Does the system support automatic solvent exchange during unattended operation?
Yes—when equipped with the optional MCU-710 solvent exchange unit, the MKV-710 performs fully automated solvent replenishment and waste evacuation across up to 500 sample runs without manual intervention.