2.5V Diagnostic Lamp

Welch Allyn

Diagnostic Equipment

Replacement Diagnostic Lamps & Bulbs

Description

A Welch Allyn 2.5 V diagnostic vacuum lamp (part number 01300-U) used as a replacement bulb for the Welch Allyn Tongue Blade Holder (model 28000) and Professional PenLites (models 76000 and 77700), providing focused white light for oral, throat and general examination lighting.

Bnefits

Provides bright, focused illumination for tongue blade holders and penlights used in general examination.
Designed specifically for compatibility with Welch Allyn Tongue Blade Holder 28000 and PenLites 76000 and 77700.
2.5 V vacuum lamp construction helps deliver consistent light output suitable for clinical use.
OEM-style replacement reduces risk of poor fit or suboptimal performance compared with generic bulbs.
Supports continued use of existing Welch Allyn diagnostic instruments without needing full device replacement.

Indications

Illumination of the oral cavity, oropharynx and throat when used in a compatible tongue blade holder.
General-purpose examination lighting when used in compatible Welch Allyn penlights.
Situations where a compact, handheld visible light source is required for basic physical examination.

Composition

Miniature vacuum incandescent diagnostic lamp.
Nominal 2.5 volt electrical rating.
Miniature Edison screw (E10) base for use in compatible Welch Allyn instruments.
Lens-end glass envelope to focus emitted light toward the examination field.
Metal base contacts for electrical connection with the instrument power source.

Formulation

2.5 V vacuum miniature incandescent lamp, OEM specification 01300-U.
Designed as a replacement lamp for Welch Allyn Tongue Blade Holder model 28000 and PenLite models 76000 and 77700.

Packaging

Supplied as a single replacement diagnostic lamp per pack (may vary by distributor).
Packaged in small protective primary packaging suitable for shipping and storage.

Usage

Ensure the Welch Allyn tongue blade holder or penlight is switched off and, if applicable, remove batteries before replacing the lamp.
Unscrew and remove the existing lamp from the instrument’s lamp holder or head, taking care not to damage the socket.
Thread the 2.5 V diagnostic lamp (01300-U) into the lamp holder using the screw base until snug; do not overtighten.
Avoid touching the glass envelope with bare fingers; if touched, gently clean with a soft, lint-free cloth.
Reassemble the instrument, insert or reconnect batteries as per the instrument instructions, and switch on to confirm proper illumination.
If the lamp does not illuminate, check battery orientation, battery charge and lamp seating; replace batteries if necessary.
Follow the instrument and manufacturer’s instructions for routine cleaning of the device; do not immerse the lamp or instrument head in liquids.

Contraindications

Not publicly listed

Adverse Effects

Not publicly listed

Storage Conditions

Store the replacement lamp in its original protective packaging until use.
Keep in a cool, dry place away from excessive heat, moisture and direct sunlight.
Protect from mechanical shock, impact and vibration that could damage the filament or glass envelope.