PURELAB Ultra The PURELAB Ultra is the intelligent ultra-pure water purification system for your most critical applications. It incorporates many unique and innovative features that set it apart from other systems and guarantees water purity to 18.2MÙ-cm and beyond. PURELAB Ultra benefits at a glance - Unique PureSure System - Real time TOC monitoring - Full spectrum UV lamp - Efficient fast rinse ultrafiltration cartridge - Automatic organics pre-rinse - PIN coded protection of critical operating parameters