Lovibond® ET840 Laboratory Floc Tester, Benchtop, 4‑Position

Lovibond® ET840 Laboratory Floc Tester, Benchtop, 4‑Position

The Lovibond® ET840 is a benchtop floc tester designed for precise, reproducible coagulation and flocculation studies in water and wastewater treatment. With flexible rear and base lighting, digital speed control, and a large illuminated display, the ET840 provides excellent visibility and control for laboratory jar testing. It enables operators to simulate real treatment conditions, evaluate coagulant performance, and optimize chemical dosage before full‑scale application.

Key Features

• ASTM D2035‑19 compliant: Performs standard jar‑test flocculation procedures for consistent, comparable results.
• Benchtop configuration: Stable, laboratory‑grade platform with four stirring positions and adjustable paddle height.
• Two‑step testing mode: Time‑controlled or manual switching between two preset stirring speeds for reproducible floc formation.
• Flexible lighting: Rear and base illumination enhances visibility of floc formation 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: 4
• 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 ET840

• Four 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 ET840 is ideal for laboratory jar testing, pilot studies, and optimization of coagulation and flocculation processes in drinking water, wastewater, industrial process water, and research applications.