Cole‑Parmer / Stuart Merit Water Still W4000

The Cole‑Parmer / Stuart Merit Water Still W4000 is a reliable and cost‑effective solution for producing high‑quality single distilled water in school, college, and teaching laboratories. Designed for budget‑conscious science departments, this water still combines proven performance with robust safety features, without compromising on quality or durability.

Constructed from durable glassware with a long‑life metal heating element, the Merit W4000 is engineered for efficiency and ease of maintenance. Its unique condenser design maximises cooling efficiency by keeping distilled water droplets in contact with the cooling coil for longer, ensuring the output water is delivered cool while pre‑heating the boiler feed to improve overall energy efficiency.

Maintenance is straightforward thanks to the integrated acid addition funnel and drain stopcock, allowing safe and convenient descaling without the need to dismantle the unit. All water connections feature screw‑thread fittings, enabling hoses to be attached or removed easily and safely, reducing the risk of breakage in busy laboratory environments.

Safety is a key priority, with two independent safety thermostats protecting against overheating in the event of water supply failure. The sturdy metal support stand is pre‑drilled for bench or wall mounting, helping to save space in prep rooms or laboratories. The unit operates on 240V AC and is designed for hard‑wired installation via an RCD isolation circuit breaker.

The Merit Water Still W4000 delivers an output of up to 4 litres per hour and has compact overall dimensions of 500 × 150 × 450mm (H). It is supplied with a 3‑year warranty (heating element 1 year), offering long‑term reassurance for educational use.

Supplied Complete With

• Metal support stand with two boiler straps
• Hose kit for water connections
• Gasket kit
• Power cord with stripped ends for hard wiring

Key Features

• Produces up to 4 litres/hour of single distilled water
• Designed for operation directly from tap water
• Two independent safety thermostats prevent overheating
• Efficient condenser design for cooler output water
• Integrated acid addition funnel and drain stopcock for easy descaling
• Screw‑thread hose connections for safe and easy fitting
• Glass construction with long‑life metal heating element
• Sturdy metal stand for wall or bench mounting
• 240V AC hard‑wired operation
• Compact size: 500 × 150 × 450mm (H)
• Economical choice for education laboratories

Ideal for School Science Lessons & Prep Rooms

Perfect for KS3, GCSE, and A‑Level science departments, the Merit Water Still W4000 provides a dependable source of distilled water essential for a wide range of experiments and demonstrations. It supports safe and accurate practical work across chemistry, biology, and physics.

• Producing distilled water for chemical solutions and reactions
• Supporting biology experiments requiring impurity‑free water
• Ensuring consistency in analytical and practical investigations
• Providing a reliable distilled water supply in prep rooms
• Helping schools remain cost‑effective without sacrificing quality

Reliable, efficient, and easy to maintain, the Cole‑Parmer / Stuart Merit Water Still W4000 is a trusted solution for educational laboratories that require high‑quality distilled water on a daily basis.