QBC Paralens Advance System



Upgrade your light microscope into an LED fluorescent microscope at a fraction of the cost.

The QBC® ParaLens™ Advance Fluorescent Microscope Attachment is a cutting-edge attachment designed to provide the many benefits of LED Fluorescence Microscopy to any light microscope. LED Fluorescence Microscopy offers improved detection of many infectious diseases and has been recommended by the World Health Organization for use in Tuberculosis screening. 


  • Converts any conventional laboratory microscope into a low-cost fluorescent microscope
  • Low-cost alternative to purchasing a traditional fluorescent microscope
  • Can be used in the same way as any traditional fluorescent microscope
  • Simply attach the QBC ParaLens Advance to the objective position of your existing light microscope
  • Ideal for performing any fluorescent microscopy techniques in the field
  • Accurately identify species - including filaria in blood (using the QBC Malaria Tube)
  • Detect Malaria, TB, Trypanosomes and other blood-borne parasites
  • Quantify the level of parasitaemia
  • Perform tests for Chlamydia, ANA, PCP, CMV: Acid-fast bacilli in sputum, urine
  • Quick cell count with two-part differential count
  • Platelet counts for monitoring dengue patients
  • Identifies the need for and the most appropriate treatment
  • Can be used in the laboratory or the field

The QBC ParaLens Advance is simple to use and requires no daily cleaning. It is also sturdy with no liquid handling or moving parts.

Can be used with the QBC Malaria Kits and QBC F.A.S.T.™ TB Products

The cutaway diagram above demonstrates the technology behind the QBC ParaLens Advance Fluorescent Microscope Attachment. Standard RMS Threading (1) is used to easily attach the QBC ParaLens Advance main body to any compound light microscope as an objective (Note: Adapter rings are available for non-standard sizes). All filters are contained in a detachable filter set arm (2) that can be removed to easily switch between objectives.

The QBC ParaLens Advance utilises epifluorescence microscopy, meaning that the light is transmitted from above the sample, rather than passing through from below. The ParaLens Advance's light comes from its LED light source, which attaches to the distal end of the filter set arm (3), producing blue light with a 410-511 nm wavelength.

After passing through the focusing lens (4), light in the filter set arm then passes through an excitation filter (5) that only allows light in the 385-480 nm range to pass into the main chamber. A dichroic beam splitter (6) directs blue light toward the sample, where it will excite any substances that have absorbed fluorescent stain.

The emitted light from the sample is focused by powerful objective lenses (7) as it travels back toward the viewer. It now has a longer wavelength than blue light which allows it to pass through the dichroic mirror. An emission filter (8) is present to reduce background noise and optimise the signal for viewing.

What Do I Need to Get Started?

For a Low-Cost Fluorescent Microscope

Light Microscope (We recommend the Vision V5000)

QBC ParaLens Advance Complete System
With a choice of objectives:
  • 10x
  • 20x
  • 40x
  • 60x
  • 100x

QBC Portability Pack (Optional but ideal if performing fluorescence microscopy analysis in the field)*

To also test blood-borne parasites or TB:
Malaria Test Kits (sold in boxes of 100 or 2,000)
F.A.S.T. TB Kits 

QBC Centrifuge (to spin QBC Malaria Tube only)

*The QBC Portability Pack includes a solar panel for cordless operation of the QBC ParaLens (ideal if using the ParaLens in the field) and 12 V battery clip to lighter adapter.


Ordering Information

Download the Product Description List for QBC Europe Products.

Product Code
Product Description
ParaLens Advance System with 20x and 40x Objectives
ParaLens Advance System with 60x Objective
ParaLens Advance System with 100x Objective
ParaLens Advance Complete System with Portability Pack
includes 4 main body assemblies with 20x, 40x, 60x and 100x objectives, blue LED light source, detachable filter set arm, power pack, immersion oil, ParaViewer, screwdriver, preventative maintenance kit, solar cell battery pack, solar cell wall plug, USB cable, 12 V battery charger, hard shell carrying case
Malaria Test System with ParaLens Advance, Microscope & Centrifuge
Malaria Test System with ParaLens Advance & Centrifuge
Malaria Diagnostic Kit (100)
Malaria Diagnostic Kit (2000 = 8x250 tests)
ParaLens Paraviewer
ParaLens Fibre Optic Cable, Quartz
ParaLens Objective, x60 w/internal UV Filters
ParaLens Light Source Bulb, Quartz Halogen
ParaLens OptiLume Light Source Only
RMS to M27 Ring Adaptor
ParaLens Oil
ParaLens Portability Pack

If you would like more information please call +44 (0) 1204 460446 or email sales@woodleylabdiagnostics.com