Toplux is a European lamp brand used by several professional distributors as part of their conventional lighting offer – halogen, CFL and fluorescent sources for maintenance and retrofit projects. Wholesalers list Toplux Fluorescent Tubes as a dedicated sub-category inside “Toplux Conventional Lamps”, alongside CFL plug-ins and halogen capsules.

In practice, Toplux Fluorescent Tubes are used to keep existing linear systems running in shops, corridors, utility rooms and signage, without changing luminaires or control gear. They are especially interesting where you want a reliable, brand-backed tube instead of anonymous no-name stock, but still need to stay within a conventional-lamp budget.

Construction and Light Quality of Toplux Fluorescent Tubes

Toplux Fluorescent Tubes follow standard linear fluorescent technology in T5 and T8 formats, so they drop straight into common fixtures:

Glass tube geometry
- T5: 16 mm diameter with G5 caps at each end.
- T8: 26 mm diameter with G13 caps at each end.
Electrodes and gas fill
- Coiled tungsten cathodes at each end.
- Low-pressure inert gas plus a tiny dose of mercury to create the UV discharge that drives the phosphor.
Phosphor coating
- Triphosphor blends tuned to standard colour codes like 830 (3000 K warm white) and 865 (6500 K daylight) – both appear explicitly in Toplux SKUs (13 W T5 3000 K; 15 W T8 6500 K).
Colour rendering and efficacy
- As with other quality T5/T8 lamps, you can assume CRI ≈ 80 for general-lighting whites – perfectly adequate for retail, offices and circulation areas.
- Typical T5/T8 tubes reach around 70–90 lm/W, depending on wattage and ballast, so energy performance is much better than halogen or incandescent.

The result is what you’d expect from a professional linear fluorescent: stable, diffuse light, good colour, solid lifetime, and compatibility with existing magnetic or electronic gear. Fluorescent tubes remain a dependable choice in buildings where long, uniform light distribution and predictable running costs still outweigh a full shift to LED. For everyday replacements in corridors, technical rooms and shared workspaces, maintenance teams often start with practical, easy-fit options such as zext fluorescent tubes. Where projects call for steadier colour integrity or cleaner visual output — for example in retail aisles or educational environments — planners frequently rely on the balanced, consistent performance of viva light fluorescent tubes and application-specific ranges from vitolight fluorescent tubes. Facilities with higher traffic and longer operating hours, such as logistics or commercial floors, often incorporate long-running, heavy-duty lines like tungsram fluorescent tubes. To stabilise supply and ensure colour consistency across entire buildings, many procurement teams complete their specifications with globally recognised, widely stocked options such as sylvania fluorescent tubes.

Assortment of Toplux Fluorescent Tubes

Distributors don’t offer a huge, confusing list – instead, Toplux Fluorescent Tubes focus on the most practical maintenance sizes.

T5 Toplux Fluorescent Tubes (G5, 13 W Class)

On the Toplux brand page at a major UK lighting retailer, you’ll find a 13 W, 525 mm, 21" T5 Standard Fluorescent Tube, Warm White 3000 K (830) listed under Toplux with cap type G5 and light type Fluorescent.

Key characteristics for this T5 segment:

Power: 13 W
Length: ~525 mm (21")
Base: G5 (2-pin at either end)
Colour temperature: 3000 K (830 warm white)
EU energy label: B–C range in current listings

This format is common in:

slim batten fittings under shelves,
decorative linear fittings in kitchens and halls,
compact commercial luminaires where T8 would be too bulky.

T8 Toplux Fluorescent Tubes (G13, 15 W Daylight)

On the Toplux Conventional Lamps page for professional buyers, there is a clear Toplux T8 15 W 6500 K 450 mm fluorescent lamp – categorised under Toplux Fluorescent Tubes with a T8 form factor.

Typical specs:

Power: 15 W
Length: ~450 mm
Diameter: T8 (26 mm)
Cap: G13
Colour temperature: 6500 K (daylight)

This kind of short T8 daylight tube is ideal for:

small showcases and counters,
specialised luminaires in cabinets or machines,
installations where daylight white helps with visual tasks or branding.

Positioning in the Toplux Ecosystem

Toplux as a brand covers energy-efficient and halogen lamps – LED, CFL, halogen and a spectrum of industrial light bulbs. Fluorescent tubes sit alongside CFL plug-ins (Toplux PLS G23) and halogen capsules as the linear part of that conventional family.

For wholesalers, that means you can keep:

Toplux halogen for legacy spots,
Toplux CFL for compact luminaires,
Toplux Fluorescent Tubes for linear fittings – all in one brand, with unified logistics and documentation.

Typical Applications for Toplux Fluorescent Tubes

Because they follow standard T5 and T8 geometries, Toplux Fluorescent Tubes slide into many everyday luminaires:

Retail and service counters
- Short T5 and T8 lines under shelves, in refrigerated displays or wall cabinets, where soft but punchy light is needed across a product front.
Kitchens and residential utility areas
- 13 W T5 warm-white tubes in under-cabinet lights, mirror lights and shallow ceiling strips provide glare-free work illumination.
Corridors, stairwells, storage
- T8 15 W daylight tubes in small fittings, or as parts of multi-lamp luminaires where 6500 K helps with alertness and visibility.
Technical and industrial fixtures
- OEM fittings designed around short T5/T8 lamps: control cabinets, machines, small signs. Keeping them running is often easiest with exactly the same wattage/length from a stable brand like Toplux.
Retrofit and mixed systems
- Sites where some lines have already moved to LED, but a few special luminaires still require conventional fluorescent – Toplux Fluorescent Tubes cover those leftovers without forcing a full system redesign.

How to Choose Toplux Fluorescent Tubes for a Project

Selecting Toplux Fluorescent Tubes is mostly about geometry, gear, and visual comfort.

1. Fix Type, Length and Cap

Identify whether your luminaire is T5 (G5) or T8 (G13).
Measure the tube:
- 13 W ≈ 525 mm T5,
- 15 W ≈ 450 mm T8,
- other lengths may exist in specific projects, but those are the documented Toplux sizes today.

Never try to mix T5 and T8 in the same fitting – the diameter, cap and control gear are different.

2. Match Wattage to Ballast and Label

Use the wattage printed on the luminaire and ballast as your primary reference.
A Toplux 15 W T8 tube must be paired with ballasts rated for 15 W T8; the 13 W T5 must be used with appropriate T5 gear. Wrong wattage can cause flicker, poor starting or ballast stress.

3. Choose Colour Temperature by Space

From current Toplux Fluorescent Tubes we see two typical CCTs:

3000 K (830 warm white) – comfortable light for kitchens, living spaces, hotel corridors and boutique retail.
6500 K (865 daylight) – very cool, high-contrast light for workshops, technical rooms, sign boxes or branding accents.

For a professional look, stick to one colour temperature per visual zone – mixing warm and daylight tubes along the same line looks messy and is unpleasant for occupants.

4. Check Light Level and Uniformity

Use lumen data from standard T5/T8 tables as a guide (for example, ~900–1100 lm for 13–15 W tubes).
Combine tube wattage, number of fittings and mounting height to hit your target lux levels (300–500 lx for many workplaces, 100–200 lx for basic circulation).
In shelves or counters, more low-watt tubes spaced evenly often give better uniformity than one higher-watt lamp in the middle.

5. Consider Lifecycle and Stock Strategy

Typical T5/T8 tubes in this class are in the 10,000–15,000 h lifetime range on suitable gear.
For high-hour circuits (12–16 h/day), plan group relamping and keep a small buffer of replacement Toplux Fluorescent Tubes so you don’t mix brands or colour codes later.

Safety, Control Gear and Maintenance for Toplux Fluorescent Tubes

Even though the technology is mature, you still need to treat Toplux Fluorescent Tubes properly to get full life and avoid problems.

Ballasts and starters
- On magnetic gear, always use the correct starter type and check that the ballast matches the wattage and tube type.
- On electronic gear, ensure compatibility with T5 or T8 as relevant; never mix tube technology the ballast wasn’t designed for.
Thermal conditions
- Do not run higher wattage than specified on the fitting; that risks overheating control gear and lampholders.
- Ensure diffusers and housings aren’t clogged with dust – poor cooling shortens ballast and tube life.
Handling and installation
- Support the tube with both hands, close to the ends, when rotating it into the G5 or G13 lampholders.
- Avoid twisting against the glass; rotate gently until it locks.
- If a tube breaks, ventilate the area and follow standard fluorescent clean-up procedure (collect fragments carefully; don’t dump into general waste).
Disposal
- Like all linear fluorescents, Toplux Fluorescent Tubes contain a small amount of mercury and must go into appropriate WEEE / lamp recycling streams, not mixed rubbish.

Wholesale and Project Use of Toplux Fluorescent Tubes

For wholesalers and project buyers, Toplux Fluorescent Tubes work best as a compact, standardised set inside the wider Toplux conventional range:

Define a core list such as:
- Toplux T5 13 W 525 mm 3000 K for slim warm-white fittings.
- Toplux T8 15 W 6500 K 450 mm for short daylight applications.
Always order and document by EAN / MPN so future maintenance uses the exact same type and colour, avoiding mixed brands and inconsistent light.
Combine Toplux Fluorescent Tubes with:
- Toplux CFL plug-ins in compact luminaires,
- Toplux halogen or LED sources where point light is needed,
- and LED tubes from other ranges for full retrofit lines – all coordinated under one B2B supplier for simpler logistics

Used this way, Toplux Fluorescent Tubes aren’t random leftover stock – they’re a deliberate, well-managed tool to keep specific T5/T8 installations performing properly while your overall lighting strategy gradually transitions to LED where it makes technical and financial sense.