1. Introduction
The OttLite 13W Replacement Tube Light Bulb with Magnetic Ballast (Type A) is engineered to provide natural daylight illumination, reducing eyestrain and enhancing visual clarity for various tasks. This bulb is specifically designed for OttLite lamps manufactured and purchased before 2008. It is crucial to confirm your lamp's compatibility before installation to ensure proper function and safety.

Image 1.1: OttLite 13W Replacement Tube Light Bulb (Magnetic Ballast Type A) and its packaging.
OttLite bulbs are known for their ability to bring natural daylight indoors, which helps in seeing fine print and details clearly, showing colors accurately, and reducing glare and eyestrain. This 13-watt bulb is energy-efficient, with an output roughly equivalent to a 60-watt incandescent bulb, and is rated to last up to 10,000 hours.
2. Compatibility Check
This replacement bulb is only for OttLite 13W lamps purchased before 2008. If your lamp was purchased after 2008, or if there is an 'E' marked on your current tube or its box, you will need an electronic ballast (Type E) bulb, not this magnetic ballast (Type A) bulb.

Image 2.1: Visual guide for bulb compatibility based on purchase year.
To confirm this is the correct bulb for your lamp, please check the following:
- Purchase Date: Your OttLite lamp must have been purchased before 2008.
- Bulb Length: Your current bulb should measure approximately 7 inches long. If it is longer, you will need a different bulb.
- Model Number: One of the following model numbers should be marked at the base of your current bulb:

Image 2.2: Reference image for compatible bulb model numbers.
- T13330
- T1360A
- T38J36-CA
- Z23112
- OLPL13TC
- OTL13TCB
- T139EZ
- T34J3R
- OTL13NATB
- OTL13P
- T137D0
- TRS113-CA
- TRSJ36
- T17113
- PL13-A-FFP

Image 2.3: Close-up of the bulb base, where model numbers are typically located.

Image 2.4: Detailed questionnaire to help identify the correct bulb type.
3. Installation Instructions
Follow these steps to safely replace your OttLite 13W bulb:
- Power Off: Ensure the lamp is unplugged from the power outlet before attempting any bulb replacement.
- Allow to Cool: If the lamp has been in use, allow the old bulb to cool completely before handling.
- Remove Old Bulb: Carefully grasp the base of the old bulb and pull it straight out from the lamp socket. Avoid twisting or bending the bulb, as this may damage the pins or the socket.
- Insert New Bulb: Align the pins on the base of the new OttLite 13W Replacement Tube with the slots in the lamp socket. Gently push the bulb straight into the socket until it is firmly seated. Do not force the bulb.
- Reconnect Power: Once the new bulb is securely in place, plug the lamp back into the power outlet.
- Test Functionality: Turn on the lamp to ensure the new bulb is working correctly.
Caution: Handle fluorescent bulbs with care. If a bulb breaks, follow local guidelines for mercury cleanup and disposal.
4. Operating Instructions
The OttLite 13W Replacement Tube operates in conjunction with your existing OttLite lamp. Once installed, simply use the lamp's integrated power switch to turn the light on or off. The bulb provides instant-on illumination.

Image 4.1: The OttLite bulb delivers natural daylight indoors, ideal for reading and detailed work.
5. Maintenance
The OttLite 13W Replacement Tube is designed for long-lasting performance with minimal maintenance. It has an average life of up to 10,000 hours under normal usage conditions.

Image 5.1: The bulb's impressive lifespan and energy efficiency.
To maximize the bulb's lifespan and maintain optimal light quality:
- Cleaning: Periodically wipe the bulb with a soft, dry cloth to remove dust or smudges. Ensure the lamp is unplugged before cleaning.
- Avoid Frequent On/Off Cycles: While the bulb is designed for durability, excessive on/off cycling can slightly reduce its overall lifespan.
- Proper Ventilation: Ensure your lamp is used in an area with adequate ventilation to prevent excessive heat buildup, which can affect bulb performance.

Image 5.2: Lighting Facts provide key performance metrics for the bulb.
6. Troubleshooting
If your OttLite 13W Replacement Tube is not functioning as expected, consider the following common issues and solutions:
- Bulb Does Not Light Up:
- Check Power Connection: Ensure the lamp is securely plugged into a working electrical outlet. Test the outlet with another device to confirm it has power.
- Bulb Seating: Verify that the bulb is fully and correctly seated in the lamp socket. Remove and reinsert it carefully.
- Compatibility: Double-check that you have the correct Type A (Magnetic Ballast) bulb for your lamp, especially if your lamp was purchased before 2008. An incorrect bulb type (e.g., Type E) will not work. Refer to Section 2: Compatibility Check.
- Bulb Life: If the bulb has been in use for an extended period (approaching or exceeding 10,000 hours), it may have reached the end of its operational life and requires replacement.
- Lamp Malfunction: If multiple new, compatible bulbs fail to light up, the issue might be with the lamp itself (e.g., faulty ballast or wiring). In such cases, professional repair or lamp replacement may be necessary.
- Light is Dim or Flickering:
- Bulb Age: As fluorescent bulbs near the end of their life, they may become dim or start flickering. Replace the bulb if this occurs.
- Temperature: Extreme cold can sometimes affect the initial brightness or cause flickering in fluorescent bulbs. Allow the bulb to warm up in a suitable environment.
7. Specifications
| Feature | Specification |
|---|---|
| Brand | OttLite |
| Model Name | OttLite PL13-A-FFP 13W Replacement Tube with Magnetic Ballast |
| Light Type | CFL (Compact Fluorescent Light) |
| Wattage | 13 Watts |
| Incandescent Equivalent Wattage | 60 Watts |
| Brightness | 580 Lumens (or 800 Lumens, depending on specific measurement) |
| Light Color | Daylight |
| Color Temperature | 5000 Kelvin |
| Average Life | Up to 10,000 Hours |
| Bulb Shape Size | T8 (Tubular) |
| Bulb Base | E26 |
| Voltage | 100 to 120 Volts |
| Frequency | 60 Hertz |
| Item Weight | 1.6 ounces |
| Product Dimensions | 8.45 x 1.2 x 1.76 inches |
| Special Feature | Energy Efficient |
| Included Components | 13W Replacement Tube - Magnetic Ballast |
8. Warranty and Support
For specific warranty information regarding your OttLite 13W Replacement Tube, please refer to the documentation included with your original OttLite lamp or visit the official OttLite website. For further assistance, technical support, or to inquire about other OttLite products, please contact OttLite customer service directly.
You can find more information and contact details on the OttLite Brand Store on Amazon.

Image 8.1: OttLite's commitment to healthy, natural lighting since 1989.





