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Venture into the Micro and Nano structures! Visit the Home Page to read the 10 REASONS DIATOM LAB PREPARATIONS ARE SO INNOVATIVE (You can download PDF file by  clicking here).

Our clients and reputation:
Diatom Lab counts many important research centres, universities, colleges, environmental organizations, and microscope companies from all around the world among its customers, such as the Cold Spring Harbor Laboratory (New York), the Rockefeller University (New York), the Eastern Washington University (Washington), the University of South Bohemia České Buděovice (Czech Republic), the Italian National Research Council or CNR, the Gymnase de Morges (Switzerland) and the World Wildlife Fund (WWF), in addition to many private customers who purchase our diatom preparations. Click here and here for the contracts signed with the Italian National Research Council or CNR (https://www.cnr.it/en). Other clients are not public bodies, therefore cannot be listed here for privacy reasons. For feedback from private customers about our diatom preparations, please see our
100% positive eBay feedback on thousands of transactions: Diatom Lab eBay Shop. Diatom Lab sells products online or, less often, through our business eBay page to promote our products amongst private customers. They wrote about us: Bulletin of the Quekett Microscopical Club, Nov 2019, No.77, ISSN 1350-9128, pp 22-25: the article recognizes Diatom Lab preparations as expertly-prepared and three microscope images of our slides have been published, such as a detail of the Diatom Test Slide version 2.0 with the comment “image chosen by editor to show the incredible resolution of this excellent slide”; Walker D., Exploring the Diatom Lab prepared slide of an integrated circuit chip, Micscape Magazine, April 2020,  Issue 289, ISSN 1365 - 070x: "The slide is impeccably prepared / mounted", "In my view the slide is excellent value for money and maintains the high standards set by the Diatom Lab shop (I have a number of the diatom slides)". JMC Scientific Consulting Ltd, Jonathan Crowther, “UV microscopy –Designing a UV condenser” Last modified October 26, 2020, jmcscientificconsulting.com: "As a quick test I imaged a sample slide of Gorgonian sea fan spicules (from Diatom Lab). These guys make high quality microscope slides great for microscopy testing and imaging, and I’d recommend checking them out if you want slides for imaging". Memmolo P, Carcagnì P, Bianco V, Merola F, Goncalves da Silva Junior A, Garcia Goncalves LM, Ferraro P, Distante C. “Learning Diatoms Classification from a Dry Test Slide by Holographic Microscopy”. Sensors (Basel). 2020 Nov 7;20(21):6353. doi: 10.3390/s20216353. PMID: 33171757; PMCID: PMC7664373 (you can download the publication by this link as a PDF document): "Acknowledgments: Diatoms in the glass slide were prepared by Stefano Barone - Diatom Lab, and purchased from www.diatomshop.com" (a Diatom Lab microscope slide of 50 selected, micromanipulated Diatoms was used for this scientific publication. This slide was sold to the Institute of Applied Sciences and Intelligent Systems (ISASI) National Research Council (CNR) of Italy (https://www.cnr.it/en)

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DIATOM LAB keeps MANY THOUSANDS OF DIFFERENT marine / freshwater / recent / fossil / subfossil DIATOM SPECIES within the laboratory to offer unique and customized products!

DIATOM TEST SLIDES (Microscope slides) for optical microscopes (light microscopes): TEST YOUR MICROSCOPE! Venture into the Micro and Nano structures!
All prices include taxes and fees. COMBINED SHIPPING: Worldwide shipping by registered international parcel is always 11,90 euros, no matter how many items are in the cart!

IF YOU ARE LOOKING FOR MORE MICROSLIDES AND ARRANGEMENTS OF DIATOMS, RADIOLARIANS AND OTHER AMAZING MICROSCOPIC OBJECTS FOR OPTICAL MICROSCOPY AND SCANNING ELECTRON MICROSCOPY (SEM) PLEASE VISIT www.diatomshop.com)

DIATOM TEST SLIDE VERSION 2.0: microscope slide of 5 MICROMANIPULATED TEST DIATOMS for dry and oil immersion objectives

DIATOM TEST SLIDE VERSION 2.0: microscope slide of 5 MICROMANIPULATED TEST DIATOMS for dry and oil immersion objectives

TEST YOUR MICROSCOPE! WATCH THE VIDEO ON Diatom Test Slide Version 2.0 PAGE! Venture into the Micro and Nano structures!
This microscope slide contains the following Micromanipulated Diatoms:
1) Stauroneis phoenicenteron (for Dry objectives),
2) Gyrosigma attenuatum (for Dry and Oil immersion objectives),
3) Gyrosigma reimeri (for Oil immersion objectives),
4) Navicula oblonga (for Double immersion = Oil immersion objective and Oil immersion condenser),
5) Pinnularia nobilis (for Double immersion = Oil immersion objective and Oil immersion condenser).
In Diatom Cubed mountant (refractive index > 1,7). Special offer!
All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!
To read the INSTRUCTION MANUAL WITH QUANTITATIVE FEATURES (number of striae and areolae in 10 µm and/or the average distance between areolae), simply visit the "Diatom test Slide Version 2.0" Page
They wrote about us: Bulletin of the Quekett Microscopical Club, Nov 2019, No.77, ISSN 1350-9128, pp 22-25: the article recognizes Diatom Lab preparations as expertly-prepared and three microscope images of our slides have been published, such as a detail of the Diatom Test Slide version 2.0 with the comment “image chosen by editor to show the incredible resolution of this excellent slide”

79 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Lyrella spectabilis

DIATOM TEST SLIDE of MICROMANIPULATED Lyrella spectabilis

DIATOM TEST SLIDE of MICROMANIPULATED Lyrella spectabilis (Gregory) D.G.Mann in Round, Crawford & D.G.Mann 1990
Details to resolve: areolae, forming the striae
Striae in 10 µm: 10-11 longitudinal
Suggested techniques: Dry or Oil immersion microscope objectives in Bright field, or Bright field with Oblique illumination, or Dark field illumination, or Phase contrast, or Differential interference contrast (DIC)
In Diatom Cubed mountant (refractive index > 1,7). All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

29 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Neidium iridis var. amphigomphus

DIATOM TEST SLIDE of MICROMANIPULATED Neidium iridis var. amphigomphus

DIATOM TEST SLIDE of MICROMANIPULATED Neidium iridis var. amphigomphus (Ehr.) A. Mayer
Details to resolve: areolae, forming the striae
Striae in 10 µm: 15-16 longitudinal
Suggested techniques: Dry or Oil immersion microscope objectives in Bright field, or Bright field with Oblique illumination, or Dark field illumination, or Phase contrast, or Differential interference contrast (DIC)
In Diatom Cubed mountant (refractive index > 1,7). All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

29 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Craticula cuspidata

DIATOM TEST SLIDE of MICROMANIPULATED Craticula cuspidata

DIATOM TEST SLIDE of MICROMANIPULATED Craticula cuspidata (Kützing) DG Mann ex Rotonda et al. (1990)
Details to resolve: very small areolae, forming the striae
Striae in 10 µm: 16-17 longitudinal
Suggested techniques: Oil immersion microscope objectives in Bright field, or Bright field with Oblique illumination, or Dark field illumination, or Phase contrast, or Differential interference contrast (DIC)
In Diatom Cubed mountant (refractive index > 1,7). All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

39 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Nitzschia heufleriana

DIATOM TEST SLIDE of MICROMANIPULATED Nitzschia heufleriana

DIATOM TEST SLIDE of MICROMANIPULATED Nitzschia heufleriana Grunow 1862
Details to resolve: striae or eventually stria pores in double immersion
Striae in 10 µm: 24-25
Suggested techniques:
1) Striae: Oil immersion microscope objectives in Bright field, or Bright field with Oblique illumination, or Dark field illumination, or Phase contrast, or Differential interference contrast (DIC);
2) Stria pores: Double immersion (= Oil immersion objective and Oil immersion condenser)
In Diatom Cubed mountant (refractive index > 1,7). All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

39 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Nitzschia linearis

DIATOM TEST SLIDE of MICROMANIPULATED Nitzschia linearis

DIATOM TEST SLIDE of MICROMANIPULATED Nitzschia linearis W.Smith
Details to resolve: striae or eventually stria pores in double immersion
Striae in 10 µm: 29-30, parallel
Suggested techniques:
1) Striae: Oil immersion microscope objectives in Bright field, or Bright field with Oblique illumination, or Dark field illumination, or Phase contrast, or Differential interference contrast (DIC);
2) Stria pores: Double immersion (= Oil immersion objective and Oil immersion condenser)
In Diatom Cubed mountant (refractive index > 1,7). All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

39 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Pinnularia dactylus var. dariana

DIATOM TEST SLIDE of MICROMANIPULATED Pinnularia dactylus var. dariana

DIATOM TEST SLIDE of MICROMANIPULATED Pinnularia dactylus var. dariana (A.Schmidt) Cleve
Details to detect: poroids
The theoretical limit of resolution of most light microscopes is ∼ 0.2 μm, but these poroids can be detected by the techniques below, thanks to Diatom Cubed high refractive index mountant!
Viewed with SEM, QUANTITATIVE FEATURES in Diatom Lab's sample are:
Poroids inside the striae: 44 - 45 in 10 µm
Average distance between poroids: 0,072 - 0,089 µm. See SEM image from the same sample!
(While In Amphipleura pellucida striae number 37-45 in 10 µm and pores are spaced 0,16 - 0,19 µm apart)
Recommended microscope objectives: Oil-immersion 63 or 100x objectives having a very good or excellent numerical aperture (1,3 or 1,4);
Suggested techniques to detect the poroids: Double immersion (= Oil immersion objective and Oil immersion condenser) with Polarized light (the polarizers should be oriented perpendicular to each other = maximum level of extinction) and possibly oblique illumination; or Immersion dark field condenser (better 1,2/1,4) with Polarized light (the polarizers should be oriented perpendicular to each other = maximum level of extinction)
In Diatom Cubed mountant (refractive index > 1,7). All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

69 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Surirella striatula

DIATOM TEST SLIDE of MICROMANIPULATED Surirella striatula

DIATOM TEST SLIDE of MICROMANIPULATED Surirella striatula Turpin (frustule has a strong torsion along the apical axis)
Details to detect: areolae, forming the striae
Viewed with SEM, the average distance between areolae is 0,14 µm.
The theoretical limit of resolution of most light microscopes is ∼ 0.2 μm, but these areolae can be detected by the techniques below, thanks to Diatom Cubed high refractive index mountant!
Recommended microscope objectives: oil-immersion 63 or 100x objectives having a very good or excellent numerical aperture (1,3 or 1,4)
Suggested techniques: Double immersion (= Oil immersion objective and Oil immersion condenser) in: Polarized light (the polarizers should be oriented perpendicular to each other = maximum level of extinction) with possibly oblique illumination; or Immersion dark field condenser (better 1,2/1,4) with Polarized light (the polarizers should be oriented perpendicular to each other = maximum level of extinction)
In Diatom Cubed mountant (refractive index > 1,7). All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

39 € Add
DIATOM TEST SLIDE of 4 MICROMANIPULATED Navicula oblonga

DIATOM TEST SLIDE of 4 MICROMANIPULATED Navicula oblonga

DIATOM TEST SLIDE of 4 MICROMANIPULATED Navicula oblonga (Kützing) Kützing
Details to detect: areolae (lineolae), forming the striae
Viewed with SEM, QUANTITATIVE FEATURES in Diatom Lab's sample are: Areolae (lineolae) in 10 µm: 48-50. AVERAGE DISTANCE BETWEEN areolae (lineolae): 0,14 µm. See SEM images from the same sample!
(While in Amphipleura pellucida striae number 37-45 in 10 µm and pores are spaced 0,16 - 0,19 µm apart)
The theoretical limit of resolution of most light microscopes is ∼ 0.2 μm, but these poroids can be detected by the techniques below, thanks to Diatom Cubed high refractive index mountant (refractive index > 1,7).
Suggested techniques: Double immersion (= Oil immersion objective and Oil immersion condenser) and: Polarized light (the polarizers should be oriented perpendicular to each other = maximum level of extinction); or Circular oblique illumination (C.O.L.) with polarized light; or Dark field illumination using an immersion dark field condenser (better 1,2/1,4); or Differential interference contrast (DIC); or UV illumination: in this case highly specialized laboratory facilities are required (it is dangerous for the eyes, it requires the use of special protection devices, accessories and cameras. Please refer to the operating manual of your instruments); or some variants of the Differential interference contrast (such as AVEC-DIC, the Allen Video-enhanced Contrast); or IRC (Interference reflection contrast technique)
In Diatom Cubed mountant! All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

39 € Add
DIATOM TEST SLIDE of MICROMANIPULATED Pinnularia nobilis

DIATOM TEST SLIDE of MICROMANIPULATED Pinnularia nobilis

DIATOM TEST SLIDE of MICROMANIPULATED Pinnularia nobilis (Ehrenberg) Ehrenberg
Details to detect: poroids
AVERAGE DISTANCE BETWEEN POROIDS: 0,11 µm (NEW MORE DIFFICULT SAMPLE!), see Scanning Electron Microscope (SEM) measurements.
The theoretical limit of resolution of most light microscopes is ∼ 0.2 μm, but these poroids can be detected by the techniques below, thanks to Diatom Cubed high refractive index mountant (refractive index > 1,7).
Recommended microscope objectives: oil-immersion 63 or 100x objectives having a very good or excellent numerical aperture (1,3 or 1,4)
Suggested techniques: Double immersion (= Oil immersion objective and Oil immersion condenser) in: Polarized light (the polarizers should be oriented perpendicular to each other = maximum level of extinction) with possibly oblique illumination; or Immersion dark field condenser (better 1,2/1,4) with Polarized light (the polarizers should be oriented perpendicular to each other = maximum level of extinction)
In Diatom Cubed mountant! All Micromanipulated Diatoms are guaranteed to be fixed directly to the UNDERSIDE of the custom optical quality cover glass (and not, as is common, on the microscope slide) for maximum resolution and contrast! The reason for this: microscope objective performance drops quickly noticeably as the specimen distance from the cover glass increases. Microscope objective lenses are designed to be optimally corrected for objects located immediately below the coverslip!

39 € Add

TEST INTEGRATED CIRCUITS for light microscopes in reflected light, stereo microscopes,  scanning electron microscopes (SEMs), objectives for macro photography!
All prices include taxes and fees. COMBINED SHIPPING: Worldwide shipping by registered international parcel is always 11,90 euros, no matter how many items are in the cart!

TEST INTEGRATED CIRCUIT for light microscopes in reflected light, stereo microscopes, SEMs, objectives for macro photography

TEST INTEGRATED CIRCUIT for light microscopes in reflected light, stereo microscopes, SEMs, objectives for macro photography

Very small integrated circuit (0.75mm X 0.66mm) with many fine details, dry mounted on microscope slide without cover glass. Excellent for testing light microscopes in reflected light, stereo microscopes, scanning electron microscopes (SEMs), objectives for macro photography! ! This test integrated circuit has been discussed in the following article: Walker D., Exploring the Diatom Lab prepared slide of an integrated circuit chip, Micscape Magazine, April 2020, Issue 289, ISSN 1365 – 070x: "The slide is impeccably prepared / mounted", "In my view the slide is excellent value for money and maintains the high standards set by the Diatom Lab shop (I have a number of the diatom slides)"

29 € Add

DIATOM TEST SLIDES (Microscope slides) for scanning electron microscopes (SEMs): Venture into the Micro and Nano structures!
All prices include taxes and fees. COMBINED SHIPPING: Worldwide shipping by registered international parcel is always 11,90 euros, no matter how many items are in the cart!

DIATOM TEST SLIDE, Version A, for scanning electron microscope (SEM)
Only the best, cleanest, unbroken specimens are hand selected!
Diatoms are fixed by means of the proprietary Diatom Lab's NANO-ADHESIVE, which is invisible to scanning electron microscopes and is therefore used to obtain a clean background for our SEM specimen preparations.

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