6 月 10, 2026

UV Lamp Replacement Guide: Model Matching, Wattage, Base and Length

Replacement UVC lamp matching is a common task for distributors, maintenance companies and end users of UV sterilization systems. The safest way to match a lamp is to compare technical parameters instead of relying only on product appearance.

A correct replacement lamp helps the UV system maintain stable output, proper installation fit and reliable electrical performance.

Do Not Match by Appearance Alone

Two UVC lamps can look almost identical but use different wattage, arc length, base wiring or ballast requirements. If the replacement lamp is not matched correctly, the lamp may fail to start, run at the wrong output, or shorten service life.

Collect the Existing Lamp Information

For an accurate replacement inquiry, collect the lamp code printed on the old tube, total lamp length, glass tube diameter, wattage, base type, pin layout and clear photos of both lamp ends. If possible, also provide the UV equipment brand and ballast label.

When the original part number is unclear, these dimensions allow BIOSUN to narrow down matching options from standard UV-C lamp tubes, replacement UVC lamps and related components.

Check Tube Length and Base Type Carefully

Total length is one of the most important replacement parameters. Even a small difference can affect installation inside the reactor, sterilizer cabinet or air purification module. Base type is equally important because it decides mechanical fit and electrical connection.

Review Ballast and Lamp Power Together

UVC lamps are designed to work with matched electrical output. When replacing a lamp, confirm whether the ballast supports the same lamp power and configuration. For older systems, it may be necessary to review the ballast condition at the same time.

Replacement Parts Beyond the Lamp Tube

Some UV systems also need quartz sleeves, O-rings, lamp holders, caps and connectors during maintenance. Reviewing these parts together can reduce installation delays and shipping costs.

For model matching support, send your lamp photos and specifications through the BIOSUN inquiry page. Our team can help check the closest model and confirm quotation details by email.