Laboratory water distiller Puridest series

semi-automaticmanualsimple

Overview
The Puridest stills prioritize quality and simplicity. They produce high‑quality distillate — ultra‑pure, low in dissolved gases, germ‑ and pyrogen‑free — suitable for reagent dilution, sample preparation and other laboratory applications. Commissioning and operation are straightforward and require no specialist skills.

Operation
Ultra‑pure water is available immediately after connection to raw water and mains power. LED indicators for operating status and cleaning requirements are standard. Depending on the model, the cleaning cycle is manual or semi‑automatic.

Maintenance
Maintenance is limited to removal of contaminants from the still. No complex servicing, cartridge replacement or ion‑exchanger regeneration is required, reducing operating costs and logistical needs.

Benefits and added value

• All models include water‑shortage protection
• Energy savings by distilling heated cooling water
• Requires only power and raw water for operation
• No expensive cartridges, adsorbents or regular ion‑exchanger regeneration

Product variants

• Puridest PD 4 | Heater power max. 3 kW | Production: 4 L/h | Conductivity (stage 1 / 25 °C): 2.3 µS/cm | Contact material: Stainless steel
• Puridest PD 4 G | Heater power max. 3 kW | Production: 4 L/h | Conductivity: 2.2 µS/cm | Contact material: Glass
• Puridest PD 4 R | Heater power max. 3 kW | Production: 4 L/h | Conductivity: 2.3 µS/cm | Contact material: Stainless steel
• Puridest PD 8 G | Heater power max. 6 kW | Production: 8 L/h | Conductivity: 2.2 µS/cm | Contact material: (not specified)
• Puridest PD 8 R | Heater power max. 6 kW | Production: 8 L/h | Conductivity: 2.3 µS/cm | Contact material: Stainless steel
• Puridest PD 12 R | Heater power max. 9 kW | Production: 12 L/h | Conductivity: 2.3 µS/cm | Contact material: Stainless steel

Device dimensions

• Puridest PD 4 G | 650 x 200 x 390 mm (W x D x H)
• Puridest PD 8 G | 650 x 365 x 390 mm (W x D x H)
• Puridest PD 12 R | 780 x 410 x 670 mm (W x D x H)
• Puridest PD 8 R | 780 x 410 x 540 mm (W x D x H)
• Puridest PD 4 R | 620 x 330 x 460 mm (W x D x H)
• Puridest PD 4 | 280 x 250 x 490 mm (W x D x H)

Downloads (available documents)

• LAUDA_Puridest_EN_24-10-22.pdf (Brochure)
• Q4DT-E_13_009_Puridest Distillation Apparatus R_V1_EN_Translation_web.pdf (Operating instruction - R)
• Q4DT-E_13-008_Puridest Glass Distillation Apparatus G+DG_V1_EN_Translation_web.pdf (Operating instruction - G/DG)
• Q4DT-E_13_007_Puridest Bi Distillation Apparatus D_V1_EN_Translation_web.pdf (Operating instruction - D)
• Q4DT-E_13_006_Puridest Mono Distillation Apparatus_V1_EN_Translation_web.pdf (Operating instruction - Mono)
• LAUDA_Overall brochure 2026_Stills.pdf (Overall brochure)

Technical specifications

• Production range: 4 L/h to 12 L/h depending on model
• Heater power: 3 kW to 9 kW depending on model
• Typical conductivity (stage 1 / 25 °C): approx. 2.2–2.3 µS/cm
• Contact materials: stainless steel or glass (model dependent)
• Protection: water‑shortage protection included in all models
• Operation: direct feed from raw water and mains power; LED status and cleaning indicators standard
• Maintenance: minimal; no cartridges or regular ion‑exchanger regeneration required
• Cleaning cycle: manual or semi‑automatic depending on model