Pyxis Lab® SP-380 Handheld Fluorometer PTSA & Fluorescein Measurement

The Pyxis Lab® SP-380 is a portable, dual-channel fluorometer engineered for direct, accurate measurement of PTSA (0–300ppb) and Fluorescein (0–600ppb) in industrial water systems. Ideal for cooling towers, boilers, and process water applications, the SP-380 features a built-in sample cell—eliminating the need for disposable cuvettes and reducing operational costs.

Advanced color and turbidity compensation algorithms ensure consistent readings in real-world conditions. An over-range turbidity alarm protects against invalid measurements, and an integrated sample cell cleanliness diagnostic supports predictive maintenance. With Bluetooth® 5.0 connectivity, users can configure settings, update firmware, and customize display outputs (e.g., ppb tracer or ppm product) via the uPyxis® app.

Its rugged, waterproof IP67-rated design, intuitive color display, and handheld form factor make the SP-380 a go-to tool for field technicians and water treatment professionals.

Key Features:

• Dual Measurement Capability: PTSA (0–300ppb) & Fluorescein (0–600ppb)


• No Cuvettes Required: Built-in sample cell reduces consumable costs


• Advanced Compensation: Eliminates interference from color & turbidity


• Over-Range Alarm: Alerts for excessive turbidity levels


• Diagnostic Function: Monitors cleanliness of sample cell


• Rugged & Waterproof: IP67 rating, drop-resistant build


• Bluetooth® 5.0 Enabled: Wireless customization via uPyxis® app


• Custom Display Output: Switch between ppb tracer and ppm product values

Technical Specs

• Display: Sunlight-readable TFT-LCD screen with stabilization LOCK-IN feature


• Battery: (4) AA batteries – Up to 3,200 readings (480mAh each)


• Measurement Cycle: Adjustable (15–999 min)


• Temperature Range: 40–106 °F (4–41 °C)


• Humidity Tolerance: 85% @ 106 °F


• Weight: 295g (without batteries)


• Dimensions: 160 × 74 × 33 mm


• Certifications: CE + RoHS


• Connectivity: Bluetooth® 5.0


• Environmental Protection: IP67 rated