Funke Gerber 7610 Insolubility Index Analyzer

Overview

The Funke Gerber 7610 Insolubility Index Analyzer is a fully automated, precision-engineered instrument designed specifically for the quantitative determination of insolubility index in powdered dairy products—including whole milk powder, skimmed milk powder, whey powder, and reconstituted dairy formulations such as ice cream mixes. Based on the standardized mechanical dispersion and sedimentation principle defined by the Arbeitsgemeinschaft Deutscher Molkerei- und Lebensmitteltechnologen e.V. (ADMA) and the Deutsche Landwirtschafts-Gesellschaft (DLG), the system quantifies the percentage of undissolved particulate matter after controlled rehydration and agitation under reproducible hydrodynamic conditions. This measurement serves as a critical quality control parameter for solubility performance, indicating processing consistency, thermal history, and potential agglomeration or denaturation during spray drying or storage. The 7610 operates without chemical reagents, relying instead on calibrated stainless-steel stirring elements and timed gravitational sedimentation—ensuring compliance with internationally recognized dairy testing protocols.

Key Features

• Fully automated sample handling and analysis cycle—no manual timing or visual endpoint judgment required
• Stainless-steel stirring assembly engineered for corrosion resistance and long-term dimensional stability in aqueous dairy matrices
• Dedicated high-torque motor with continuous-duty rating and programmable agitation profiles per ADMA/DLG specifications
• Integrated digital timer with ±0.1 s resolution, synchronized to stir-on/stir-off sequences and sedimentation intervals
• Temperature-stable sample chamber minimizing thermal drift during sequential analysis
• Modular design supporting routine maintenance and ISO/IEC 17025-aligned calibration verification using certified reference powders

Sample Compatibility & Compliance

The 7610 is validated for use with liquid and powdered dairy matrices including pasteurized and UHT-treated milk, sweet and acid whey powders, infant formula base powders, and frozen dessert premixes. It complies with ADMA Method No. 103 (2021 edition) and DLG Test Regulations for Milk Powder Solubility (Version 4.2). While not a regulatory enforcement device, its output supports adherence to Codex Alimentarius Standard CXS 207-1999 (Milk Powders), EU Commission Regulation (EC) No 1234/2007 Annex VI, and national standards such as GB 19644–2010 (China) and IS 1479 (India). The instrument architecture meets general laboratory safety requirements per IEC 61010-1 and carries CE marking for electromagnetic compatibility and electrical safety.

Software & Data Management

The 7610 operates via embedded firmware with local LCD interface and optional RS-232/USB data export. Raw insolubility index values (%, w/w), run timestamps, operator IDs, and instrument status logs are stored internally for up to 500 test records. Exported CSV files support integration into LIMS environments compliant with 21 CFR Part 11 when paired with validated third-party data acquisition software. Audit trails include user login events, method version identifiers, and calibration date stamps—facilitating GLP and GMP-aligned documentation for internal QA audits and external certification bodies.

Applications

• Quality assurance in dairy ingredient manufacturing facilities performing release testing of bulk milk powders
• Process validation studies evaluating spray dryer inlet/outlet temperatures, homogenization pressure, and fluid bed cooling parameters
• R&D laboratories investigating the impact of emulsifier systems, pre-heating regimes, or storage humidity on powder reconstitution behavior
• Contract testing laboratories delivering accredited ADMA-compliant reports for international trade documentation
• Regulatory inspection support where insolubility index is specified as a mandatory parameter in tender specifications or import certificates

FAQ

What standards does the Funke Gerber 7610 comply with?

It follows ADMA Method 103 and DLG Test Regulations for milk powder insolubility index determination.
Can the instrument be used for non-dairy protein powders?

No—it is calibrated and validated exclusively for dairy-based matrices; application to soy, pea, or whey protein isolates requires method transfer validation.
Is daily recalibration required?

No; routine verification using certified reference powders is recommended weekly or per 50 runs, per internal QA SOPs.
Does the system require consumables beyond standard lab glassware?

Only disposable or autoclavable sample cups and calibrated stirring rods—no proprietary cartridges or reagents.
How is traceability ensured for audit purposes?

Each test record includes unique run ID, timestamp, operator code, and firmware version—exportable for inclusion in electronic batch records.