Replacement for 19786-00 HACH Halogen - T3 Shape G4 Base 20W 6V with Clear Finish

Built to the specifications of the 19786-00 from HACH, this compatible halogen replacement provides a straightforward path to restoring your equipment. At 20W, 6V, T3 form factor, it drops into the G4 bi-pin base socket and runs at the correct operating point. Its 280-lumen output supports consistent, reliable performance.

This lamp provides the stable, continuous-spectrum output that analytical instruments like spectrophotometers and photometers require for accurate, repeatable measurements. Its halogen gas fill keeps the tungsten filament operating cleanly, preventing envelope darkening that would introduce drift in optical readings. It helps maintain consistent results across calibration cycles.

Key Features & Benefits

• Rated at 280 lumens for dependable brightness throughout the lamp's life.
• Fits standard G4 bi-pin base sockets for straightforward replacement.
• Clear Finish T3 envelope for optimal light distribution.
• Operates at 20W, 6V to match standard low-voltage circuits.

Product Specifications

• Wattage: 20W
• Voltage: 6V
• Base Type: G4 2-PIN 4MM CENTER/CENTER
• Bulb Shape: T3
• Finish: Clear Finish
• Lumens: 280
• Condition: Brand New

Common Applications

This halogen lamp is commonly used in:

• Spectrophotometer and UV-Vis analyzer light sources
• Chromatography detector illumination modules
• Automated clinical chemistry analyzers
• Microscope and optical measurement instruments
• Scientific research and analytical equipment

During the checkout process, you can choose from expedited services such as overnight delivery to standard ground shipping. We aim to ensure your order is delivered promptly and reliably, wherever you are.

All returns must be made within 30 days of purchase with the invoice. (After 30 days, Interlight credit only, Minimum 25% restocking fee, no returns after 60 days, special items order just for you are not returnable.)

At Interlight, your satisfaction is our priority. We offer a 30-day money-back guarantee on eligible products, provided they are returned in resalable condition with the original invoice.