Customizable. Highly sensitive. Simple Plug & Play.

ESElog Fluorescence Detector

A high performance fluorescence detector for the measurement of up to 3 fluorescent dyes

The ESElog Fluorescence Detector is your B2B solution that can be tailored to your specific needs.  It is based on next-generation technology and enables fluorescence measurements at the point of need. ESElog is a high-performance fluorescence detector for measurement of up to 3 fluorescent dyes and is designed for use in a wide range of lab applications.

Due to the lack of moving parts, low operating voltage, and confocal optics, the detector can be easily and rapidly integrated into various measurement processes. The ESElog is available as a standard product or can be customized.


  • Contact-free measurement on surfaces or in solutions
  • Rapid, easy to control measurements
  • Confocal optics
  • Compatibility with optical systems
  • Simultaneous measurement of 2 different wavelengths


  • Simple plug and play operation
  • Flexible system; easily customized
  • Fast realization of individual measurement needs
  • Highly sensitive

2 different wavelengths can be detected using a single sample. This can be used to monitor 2 different variables, for example, water quality in lakes where a water sample in a cuvette can be tested for oil and algae contamination simultaneously. The detector is highly sensitive with a detection limit in the low pM range (fluorescein pH 12, 1 cm Quartz cuvette, room temperature). In addition, fluorescence can also be measured in regular PCR microtubes removing the need to transfer samples to a cuvette.

The confocal measurement principle enables flexible positioning of the detector almost independently of distance and angle. When connected to a small portable personal computer, the ESElog becomes a fully mobile and compact measurement unit, suitable for use in many situations.

The ESElog Fluorescence Detector is easily customizable for your applications with accessories including:

  • Cuvette or tube holders compatible with optical systems
  • Ready-to-use measurement stations for liquids or solid surfaces
  • Software for measurement (or alternatively labVIEW may be used)

Short time to market

When developing a point-of-need detection system, start your R&D work with a fully developed fluorescence detector. This means you will save costs, speed up your R&D processes, and shorten the time-to-market.

After the initial development phase, you can switch from the ESElog to the Fluo Sens Integrated, and simply choose from a wide range of available filter sets, accessories, and customized adaptations to meet almost any measurement need.

ESElog applications

The ESElog is a unique fluorescence detector designed for ease of use in a wide range of applications. Direct measurement of liquids or solids can be easily achieved through a small measurement window. The detector comes in a solid housing and can be easily mounted in standard optical benches, such as LINOS or ThorLabs.

The ESElog can be connected to a personal computer via the integrated USB and is compatible with FL Digital Software for routine data evaluation, and labVIEW, for more detailed assessment.

Ordering information

If the wavelength combinations you require are not included in our starter kit, please don’t hesitate to inquire. The table below showcases a variety of combinations we can provide, along with interfaces like RS485 and other accessories, demonstrating both our existing capabilities and potential customizations.

For up-to-date licensing information and product-specific disclaimers, see the respective user manual. DIALUNOX user manuals are available here or can be requested at

ESElog USBContentsCat. no.
E365/D460/E520/D570E1/D1: Alexa Fluor 350; Pyrene; Terbium
E2/D2: 5_TAMRATM; Alexa Fluor 532; ATTO 550; Cy3 E1/D2: Qdot 565, evidot 580
E365/D460/E520/D625E1/D1: Alexa Fluor 350; Pyrene; Terbium
E2/D2: DY521XL; SYPRO Red
E1/D2: Chlorophyll-a(MeOH); Porphin/Porphyrene
E365/D460/E520/D680E1/D1: Alexa Fluor 350; Pyrene; Terbium
E1/D2: Chlorophyll-a(MeOH); Porphin/Porphyrene
E365/D520/E590/D625E1/D1: ATTO 390; Cascade YellowTM; Dioxane; GFP; Riboflavin
E2/D2: Alexa Flour 594; ATTO 590; Spectrum Red; Texas Red
E1/D2: Qdot 705
E365/D625/E660/D720E1/D1: Europium; Toluene; OEP; tBu4-Azaporphine; Qdot 605
E2/D2: Alexa Flour 660; ATTO 680; Cy 5.5
E1/D2: Qdot 705
E470/D520/E550/D600E1/D1: Cy2; FAMTM; FITC; Fluorescein(EtOH); SYBR Green; YFP
E2/D2: BODIPY 564/570; DY-548; Spectrum Orange
E1/D2: RuBpy-NP; SYPRO Ruby
E470/D520/E565/D625E1/D1: Cy2; FAM; FITC; Fluorescein(EtOH); SYBR Green; YFP
E2/D2: Alexa Fluor 568; CY3.5; ROXTM; Stains-All
E1/D2: Acid Red 52; SYPRO Tangerine
E470/D520/E590/D640E1/D1: Cy2; FAMTM; FITC; Fluorescein(EtOH); SYBR Green; YFP
E2/D2: Oxazine 170; Crystal violet (H2O)
E470/D520/E660/D720E1/D1: Cy2; FAM; FITC; Fluorescein(EtOH); SYBR Green; YFP
E2/D2: Oxazine 170; Crystal violet (H2O)
E470/D550/E590/D660E1/D1: Acridine Red; Acridine Yellow; Alexa Fluor 430; Auramine
E2/D2: Napthofluoresceine; Sensilight P3
E470/D570/E625/D680E1/D1: Phosphine 3R; SensoPath Dye 10; SYPRO Orange
E2/D2: Alexa Fluor 633; Cy5; LIZ; Nile Blue; Spectrum Red
E470/D570/E625/D720E1/D1: Phosphine 3R; SensoPath Dye 10; SYPRO Orange
E2/D2: Mg-Phthalocyanine(PrOH, EX625)