Pre-Filled Syringes: Engineering Precision for Paste & Liquid Veterinary Drugs

In animal health management, pre-filled syringes deliver unmatched dosing accuracy – but their design diverges radically between viscous pastes and free-flowing liquids. Understanding these critical differences ensures optimal performance for applications ranging from oral paste syringes in livestock to liquid antibiotics in dairy herds.

Needle Architecture: Viscosity Dictates Design

Paste Formulations (e.g., equine dewormers, pet nutrition gels) demand thick-bore 14G–16G needles. These generate 28 PSI extrusion force to overcome high viscosity (50,000–80,000 cP), preventing clogs during administration. Reinforced steel tips maintain structural integrity under pressure.

Liquid Medications (e.g., mastitis treatments, insecticides) conversely utilize ultra-fine 20G+ needles. Their low 4 PSI flow resistance prevents leakage while enabling precise delivery into delicate areas like teat canals or crevices.

Material Science: Customized for Consistency

For Paste Applications:

• Rigid polypropylene barrels withstand 60N plunger forces

• Twist-lock tips secure connections during high-pressure extrusion

• Anti-backflow valves prevent messy recoil in oral dosing syringe systems

For Liquid Therapies:

• Soft LDPE tips (Shore 50A) flex with biological tissues

• Silicone-free plungers maintain drug stability

• Chemical-resistant fluoropolymer resists corrosive agents

Dosing Precision: Tailored Measurement

Paste Syringes prioritize weight-based accuracy:

• Dual-scale graduations (mL/g) accommodate density variations

• Adjustable oral dosing syringe collars enable ±5% weight-adjusted dosing

• 45mL+ capacities suit large-animal requirements

Liquid Systems focus on volumetric control:

• ISO 7886-1 compliant ±2% volume tolerance

• Tactile dose-click mechanisms for blind administration

• 0.5–20mL ranges for sensitive biologics

Performance Benchmarks

Paste-optimized syringes achieve remarkable <0.3% residual volume despite high viscosity, while liquid variants maintain <1.5% residuals. Administration times reflect viscosity differences: 12–18 seconds for pastes versus 3–5 seconds for liquids.

Xingfuda’s Application-Specific Solutions

ProPaste™ Series dominates high-viscosity challenges:

• 14G steel tips with rotating locks

• 60mL capacity barrels

• Dual-scale laser-etched graduations

FlexiFlow® Range excels in liquid delivery:

• Veterinary-grade LDPE tips (ISO 22442)

• Low-dead-space plungers

• 0.5–20mL sterile fills

Universal Advantages:

• Gamma irradiation compatibility

• Automated assembly readiness

• QR-coded traceability

oral dosing syringe