To maintain the integrity and performance of your 1720D and 1720E Low-range Turbidimeters, Hach recommends an annual lamp replacement under normal operating conditions. Each replacement bulb undergoes a rigorous burn-in process at the factory, ensuring that light output is stabilized for immediate installation and optimal functionality. Ensure your turbidimeter remains in top condition by following the guidelines provided in the maintenance section of the instrument manual.

Key Features:
• Designed specifically for 1720D and 1720E Low-range Turbidimeters
• Annual replacement recommended for optimal performance
• Factory-burned bulbs for consistent light output
• Easy installation for immediate use
• In-depth maintenance guidance available in the instrument manual
• Supports accurate turbidity measurements for reliable water quality testing