Lovibond® ET850 Laboratory Floc Tester, Benchtop, 6‑Position

The Lovibond® ET850 is the high‑capacity model in the Floc Tester series, offering six stirring positions, flexible rear and base lighting, and precise digital speed control for advanced coagulation and flocculation studies. Designed for laboratory environments that require multi‑sample throughput, the ET850 enables reproducible simulations of real treatment conditions, helping operators determine the ideal coagulant type and dosage before full‑scale implementation.

Key Features

• ASTM D2035‑19 compliant: Performs standard jar‑test flocculation procedures for consistent, comparable results.
• Six stirring positions: High‑capacity benchtop configuration with adjustable paddle height for parallel testing.
• Two‑step testing mode: Time‑controlled or manual switching between two preset stirring speeds for reproducible floc formation.
• Flexible lighting: Rear and base illumination for enhanced visibility of floc development during testing.
• High vessel compatibility: Accepts beakers from 500 mL to 1500 mL (1500 mL usable on half of the stirring positions).
• Precise speed control: Digital adjustment from 20 to 250 rpm with ±1 rpm precision and 5 rpm resolution.
• Durable construction: Corrosion‑resistant stainless‑steel stirring rods and paddles.
• Large illuminated display: Clear visibility of speed and timer settings in laboratory environments.
• Universal operation: Intuitive, language‑independent membrane keypad.

Technical Specifications

• Stirring Positions: 6
• Speed Range: 20–250 rpm
• Speed Precision: ±1 rpm
• Speed Resolution: 5 rpm
• Timer: 1–240 minutes or continuous
• Motor: DC gear motor with encoder
• Display: Backlit LCD
• Operation: Membrane keys
• Power Supply: 100–240 V, 50/60 Hz (15 VDC output)
• Max Power: 50 W
• Protection Class: Power Supply Class II; Device Class III
• Rod & Paddle Material: Stainless steel
• Dimensions: 31.5 × 16.14 × 7.87 in
• Compliance: CE

Included with the ET850

• Six stirring positions with stainless‑steel paddles
• Digital rpm regulator (20–250 rpm)
• Timer (1–240 minutes or continuous)
• Rear and base illumination for enhanced visibility
• Illuminated display for speed and time
• Instruction manual
• Warranty documentation

Compatible Accessories

• Measuring beaker, glass 1000 mL — Part No. 419165
• Measuring beaker, PP 1000 mL — Part No. 419166
• Measuring beaker, glass 1500 mL — Part No. 419167

The ET850 is ideal for high‑throughput jar testing, pilot studies, and optimization of coagulation and flocculation processes in drinking water, wastewater, industrial process water, and research applications.