Selecting a Pump for Urinalysis: Why Syringe Pumps Are Costing You More Than You Think

Key Takeaways:

• Automated urinalysis requires high precision, but syringe and valve-based systems create maintenance, accuracy, and downtime challenges.

• Fluid Metering’s ceramic piston pumps solve these issues with wear-free, valveless technology that boosts reliability and uptime.

• TRYTON™ replaces syringe pumps with high-accuracy aspiration/dispense and zero consumables.

• STF delivers drift-free, factory-set fixed-volume dispensing for consistent reagent delivery.

• FENYX® offers flexible, multi-volume dispensing without valves for higher throughput and no maintenance.

• Additional mixing and flushing pumps ensure clean workflows and stable dilutions.

• Fluid Metering brings decades of diagnostic expertise to help OEMs build more reliable, lower-service instruments.

The Challenge

In automated urinalysis, precision isn't optional. From delivering microliter volumes onto reagent pads to preparing diluted samples for imaging, every fluid movement affects diagnostic accuracy.

Yet many analyzers still rely on syringe pumps and valve-based systems that create persistent problems:

• Frequent maintenance cycles
• Mechanical backlash requiring software compensation
• Consumable replacement costs
• Unplanned downtime in high-throughput labs

For OEMs, these concerns translate directly to higher service costs and worse instrument uptime.

The Solution

Fluid Metering's ceramic piston pump technology solves these exact pain points—delivering precision, reliability, and simplified integration for diagnostic instrument developers.

Pump Solutions for Every Function

TRYTON™: Replace Your Syringe Pump

Best for: Aspirate and dispense operations

TRYTON delivers syringe-pump accuracy without the limitations. 

Key advantages:

• No wear items that need frequent replacing
• Built-in anti-backlash mechanism—no software correction needed
• Chemically compatible with urine and reagents
• Typical accuracy of 1μL <±2% for strip saturation or cuvette loading

Ideal for long-term reliability in aspirate/dispense cycles with minimal service interventions.

STF: Factory-Set Precision

Best for: Fixed-volume dispensing

When your application needs the same volume every time—no drift, no recalibration—STF delivers.

Key advantages:

• Factory-set dispense volume and flow range
• Valveless, chemically inert construction
• Compact design for easy integration
• Years of operation with zero recalibration
• Ideal for reagent delivery, timed rinse cycles, and dosing where consistency matters more than flexibility.

FENYX®: Variable Volume Without the Valve

Best for: Multi-protocol dispensing

Different volumes shouldn’t mean downtime or maintenance. With FENYX, you get high-throughput precision with zero maintenance—no tradeoffs.

Key advantages:

• Adjustable dispense volume from 5ul to 400ul. 
• Same valveless, inert design as STF
• No syringes or valves to fail
• Faster priming and flushing for higher throughput

Ideal for labs requiring protocol flexibility without sacrificing uptime or adding service complexity.

Mixing & Flushing Pumps: The Supporting Cast

Urinalysis analyzers don't just aspirate and dispense—they also mix, dilute, and flush between samples. Our supporting pumps play a critical role in maintaining precision across your entire workflow.

Our supporting pumps:

• Duplex mixing pumps provide stable, repeatable dilutions for sediment or cytometry prep
• Flushing pumps maintain clean fluid paths between cycles, reducing cross-contamination risk

Work With Experts Who Understand Diagnostics

Choosing the right pump isn't just about specs—it's about understanding how diagnostic systems work. At Fluid Metering, we've partnered with OEM diagnostic developers for decades to deliver pumps that outperform, outlast, and simplify.

Whether you're replacing syringe pumps with zero-maintenance alternatives, designing for maximum uptime, or scaling throughput with fewer service calls, our team can help you build a more capable fluidic solution.

Contact our engineering team to discuss your specific application.