Customer challenge

An Algerian medical device manufacturer scaling production of dynamic blood glucose test strips faced tight cost targets while needing sub-microliter reagent control. Existing manual and slow jetting methods delivered inconsistent reagent volumes, high material waste and reduced enzyme activity from aggressive handling. The line required a compact, easy-to-integrate valve that could deliver repeatable micro-dosing, preserve reagent bioactivity, and stabilize throughput for long production runs.

Mingseal solution: KPS2000 piezo jet valve system

Mingseal supplied the KPS2000 piezo jet valves and a lightweight controller to meet the customer’s technical and cost constraints. The KPS2000 is a non-contact, high-frequency jet valve optimized for micro-volume reagent coating on sensitive biosensor pads.

Key features applied in the Algerian line:

• Sub-nanoliter precision and high throughput: With jetting up to 1200 Hz and minimum droplet sizes in the nanoliter/sub-nanoliter range, the KPS2000 enables tight shot-to-shot volume control while meeting takt rates—reducing over‑apply and material cost per strip.
• Broad viscosity compatibility: The fluid path supports viscosities from 1 to 500,000 mPa·s, allowing enzyme suspensions, stabilizers and viscosity modifiers to be processed without frequent hardware changes.
• Lightweight, compact design: A 430 g valve body and compact controller simplify gantry or robot mounting, maintaining timing fidelity at high speed and easing retrofits on existing lines.
• Gentle fluid handling: Valve actuation and nozzle geometries are engineered to minimize shear and thermal stress, preserving enzyme structure and activity during dispensing.

Process integration and control

Implementation focused on reproducible coating recipes and closed‑loop control to guarantee uniform films across long runs:

• Multi-head synchronized dispensing: Four KPS2000 valves were mounted on a lightweight gantry and run in parallel to coat reagent pads simultaneously. High-frequency synchronization preserved droplet timing and uniformity across heads.
• Temperature and pressure management: Independent temperature control for syringes and tuned back-pressure settings maintained consistent reagent rheology. Low-energy pulses and controlled nozzle geometry prevented local heating and high shear.
• Inline metrology and feedback: Optical thickness measurement combined with periodic gravimetric sampling provided real-time verification of dot mass and film uniformity. Dispense parameters were auto-corrected for drift to maintain mass within tolerance.
• Preventive maintenance and fluid hygiene: Scheduled purge cycles and nozzle-change protocols reduced clogging and downtime, lowering consumable waste and maintaining stable runs.

Results and production value

• Tight micro-volume control and cost savings: Shot-to-shot variance dropped to below 3%, cutting reagent overuse and materially reducing per-strip reagent costs at scale.
• Uniform sensor response and yield improvement: Consistent film thickness and line-width produced tightly clustered QC results, decreasing lot-to-lot variability and reject rates.
• Preserved reagent activity: Low-shear, low-temperature dispensing preserved enzyme activity and shelf-life, supporting regulatory consistency for clinical test strips.
• High throughput with simple integration: The KPS2000’s high-frequency capability and lightweight mounting allowed the plant to meet forecasted takt rates without major equipment redesign.
• Lower maintenance overhead: Improved fluid-path design and preventive maintenance decreased unscheduled stops and consumable waste, increasing overall equipment effectiveness.

Conclusion

For Algerian manufacturers producing dynamic blood glucose test strips, the KPS2000 provides an economical, high-precision jetting solution that balances micro-volume accuracy, reagent protection and production stability. By combining sub-nanoliter jetting, wide viscosity tolerance, gentle dispensing and closed-loop metrology, the KPS2000 reduces cost per unit while improving uniformity and preserving bioactivity—making it an effective choice for scalable, regulatory-compliant strip production. Mingseal offers on-site tuning, FAT validation and pilot runs to qualify dispense recipes and validate clinical sensitivity targets.