SL5 Cell Finder Test Target

Rapidly find cells using this grid pattern slide
75mm x 25mm x 1.5mm
Chrome markings on Soda Lime glass

In stock
GB £125.00
  • Buy 3 for GB £75.00 each and save 40%
  • Buy 5 for GB £65.00 each and save 48%

Maximum 2000 characters

Single cells in a cell culture and other small structures can be rapidly mapped and re-located with an accuracy of a few microns by reading the coordinates inside the CellFinder micro-pattern using a cross-hair eyepiece.

Each coded square is 400x400 µm
Character codes are 40 µm high
Reference dots are appr. 10 µm

By application of the latest IC-photomask image technology the micro-optical quality of CF micro-slides has been substantially improved in recent years. Within seconds, each single cell can be re-located under any light microscope by using the micro-coordinates on the CF- microslides.

Cell Finder slide dimensions: 3" x 1" ( = 76 x 26 mm ) - 1.5 mm thick.
Cell Finder Glass slides can be cleaned, sterilized and re-used during many years.

CellFinder micro-patterns have ten identical squares of 10 x 10 mm - each subdivided into 625 squares of 0.4 x 0.4 mm. Each 0.4 mm square has a two character code in its centre, i.e. AA till AZ, BA till BZ up till ZA till ZZ of 40 micron high characters. By using 25 characters of the alphabet - 625 squares are uniquely coded. Each 0.4 mm square has four squares of 0.2 x 0.2 mm - subdivided by 'dotted lines' of 10 micron dots at in-between distances of appr. 10 microns. The dots enable marking and later relocation of the position of a single cell with an accuracy of a few microns under any light microscope.


Cell Finder microscope slides are used in many research disciplines, especially in general microbiology, e.g. human, animal and plant genetics, oncology, algae research, plant systematics, in the focal point of large optical systems for aero and space photography, in general geology, e.g. mineralogy and petroleum geology and finally in hydrology.


As standard products, these are available on Soda Lime glass with a low reflective chrome pattern etched onto the surface. The chrome material, when viewed from the top surface, will have an oxide layer (CrO) to reduce light reflections. 


Our standard production turnaround is 5 days from receipt of order. We can offer faster services if required for more urgent orders.


We inspect the piece by eye for flaws, design inaccuracies and contaminations. We measure the design to check that it conforms to the specifications, and record both of these measurements on our internal inspection records. Finally, we find the CD of the mask, measure that, record it, and also take a digital photo that is saved with the inspection log. We use Nikon MM40 at 900x magnification and an OGP ZIP 300 at 400 x magnifications for this.

ENHANCED:   In addition to the standard inspection process described above, we will then document them via a Certificate of Conformance which we supply with the mask. Tolerances are per our standard tolerances.

Please see the TECHNICAL sections, DOWNLOAD sections and FAQ for further information. If you still require clarification, please either email or click for LIVE SUPPORT.



The majority of our standard chrome on glass targets  are made on soda lime glass, with a low reflective oxide coating  (11% reflectivity at 436nm wavelengths). They are made at high presicion, using a photolithographic method, ensuring the very best quality. The Optical Density of the chrome is  >2.8 in the UV bandwidth, and the chrome is coated to approx 0.1um thick. The side of the chrome that is against the glass (the underneath face) remains high reflective with no oxide. Alternative thickness, reflectivity and colour are available on demand. Please see the download section for charts.



Soda Lime Glass is the most common substrate used for masks, due to its good quality/price ratio. The glass is optically good, very flat and has no imperfections. If used in a photo-lithographic process, glass can be used with a very wide variety of light sources from 350nm upwards, with an excellent UV transparency. Soda Lime glass has a thermal co-efficient expansion of 93 (10-7) which is approximately 10 ppm (parts per million) , and a transmittance value of 88% at 375-450nm, with a glass flatness class of 5um for the smaller plates and 10um for the larger plates. Some of the very big plates of 14" and above, may have a bigger flatness tolerance. 

Quartz or sometimes called Fused Silica is equally a very good substrate, and probably the most common for ‘high-end’ applications such as semiconductor chips. There are a couple of mechanical benefits of quartz over standard soda lime glass – firstly the quartz material is optically pure, with a very high transmission of light even at very low wavelengths of down to 175nm. The second major benefit of quartz is that it remains dimensionally stable even in extreme temperatures, with a thermal co-efficient expansion of 0.4 ppm. Quite often, quartz is the chosen substrate used in laser ablation applications, firstly because of the short wavelengths that are used to ablate with, and secondly because mechanically it can cope with higher temperature fluctuations without damage.


  • Quartz Optical transmission of visible light = 94%
  • Soda Lime Optical transmission of visible light = 88%
  • Quartz Optical transmission minimum wavelength = 180nm
  • Soda Lime Optical transmission of visible light = 375nm
  • Quartz thermal expansion co-efficient =  0.4 ppm
  • Soda Lime thermal expansion co-efficient =  10ppm





Q: The pattern doesnt represent what i need - can we alter it as a special design?

A: Yes ....The patterns here are standard products, but we can certainly transfer almost any design to the slide (Note the price will change accordingly)


Q: How long from order to dispatch?

A: Typically we have these products in stock on the shelf - however, it may take upto 5 days before they are dispatched. If you need the product more urgently, please contact us direct and we will do our best !


Q: Can you send me a scaled picture showing the detail in higher resolution?

A: Certainly, we have higher resolution graphics that we can email you. Please contact us via the Live Support or by Email.


Q: Can I have different materials?

A: Yes. Our standard products are Low Reflective Chrome on Soda Lie glass - but we can offer different base material (Quartz, Borofloat etc) and different masking materials (Aluminium, ITO, Gold etc), as well as simply different thicknesses of glass. There will be minimum order quantities for most of these special materials of at last 6 pieces, but with more "exotic" combinations considerably more.





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  High Resolution Picture