Continuous Carbon Coating Grid

Most samples for transmission electron microscopy must be "supported" on some kind of a thin electron transparent film, to hold the specimen in place while in the objective lens of the TEM. Only samples that are self- supporting do not need some additional support film. Should an electron microscope user use a support film at all if one is not absolutely needed? Probably not, even the very best quality of support films do result in more material being placed in the beam's path, resulting even if ever so slightly, the contrast of the final image. For many users, they don't have the luxury of having to make that decision: More often than not, even what appearing to be self-supporting samples, still do need the assistance of a support film to cut down on sample drift.

The selection of the "right" support film has never been an easy exercise, even for the most experienced of TEM experts, and the only way to really determine which support film is the best for a particular application it to just "try it!" Therefore, we would like to contribute in a useful way to the needed information base to help make the optimum selections. The giving of such guidance itself is an imprecise science. We have therefore broken down the different kinds of support films and have tried to present tradeoffs between one support film system vs. another. We cannot offer guarantees, as the range of samples studied is so wide and the environmental range so broad (from cryo temperatures to temperatures exceeding 1000°C) to which the grids and their coatings might be subjected. The best decisions are usually made by just trying several possibilities and if one works better than the other, the choice for future samples becomes obvious.

Mo-300CN, Molybdenum grid coated with thin carbon film.

Following table will help you determine what support film to use for your application.

1.1 Thin carbon film coated grids:

This is pure thin carbon film coated grid. The carbon film is very clean and pure. Thickness of the carbon film is less than 10nm. As the film is very thin and fragile, it requires delicate handling during specimen preparation. We only coated it on 400, 300, and 200 mesh grids. The Carbon thickness is about 10nm.

Thin carbon film coated grids, carbon film thickness is < 10nm
Catalog#	Description	Unit Price
Cu-400CN	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$62.25, pkg/25grids
Mo-400CN	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$199.75, pkg/25grids
Cu-300CN	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$62.25, pkg/25grids
Mo-300CN	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um, the best grid for Cryo-EM.	$199.75, pkg/25grids
Cu-200CN	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$74.75, pkg/25grids
Mo-200CN	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$224.75, pkg/25grids
For other kind of thin carbon coated grids, please email for details.

1.2 Thick carbon film coated grids:

This is pure thick carbon film coated grid. The carbon film is very clean and pure. The thickness of the carbon film is about 35nm. As the pure carbon film is very fragile, we don't coat them on grids less than 200 mesh. The Carbon thickness is ~35nm

Thick carbon film coated grids, carbon film thickness is ~35nm
Catalog#	Description	Unit Price
Cu-400CK	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$62.25, pkg/25grids
Mo-400CK	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$199.75, pkg/25grids
Cu-300CK	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$62.25, pkg/25grids
Mo-300CK	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um, the best grid for Cryo-EM.	$199.75, pkg/25grids
Cu-200CK	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$74.75, pkg/25grids
Mo-200CK	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$224.75, pkg/25grids
For other kind of thick carbon coated grids, please email for details.

1.3 Formvar film coated grids:

A Formvar film is covered on the grids. The thickness of the formvar film is about 20-30nm. The film is easily broken if it is too thin. The grid with less holes is need thicker formvar for the reason of stabilization. Formvar: ~ 20-30nm, all grids

Formvar film coated grids, film thickness is ~20-30nm on both sides.
Catalog#	Description	Unit Price
Cu-400F	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$64.50, pkg/50grids
Mo-400F	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$174.75, pkg/25grids
Cu-300F	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$64.50, pkg/50grids
Mo-300F	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$174.75, pkg/25grids
Cu-200F	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$64.50, pkg/50grids
Mo-200F	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$174.75, pkg/25grids
For other kind of formvar coated grids, please email for details.

1.4 Carbon/Formvar film grids

A Formvar film coated with a other layer of carbon. This is the strongest and most versatile support film we produce. It is stable in the EM under all operating conditions including high magnification with high beam intensity. The films can withstand vigorous specimen preparation techniques. If the carbon surface is hydrophobic, specimen suspensions can be applied to the Formvar surface. ~15nm, Formvar: ~ 20-30nm,  All grids

Carbon/Formvar film coated grids, Carbon ~15nm, Formvar ~20-30nm
Catalog#	Description
Cu-400FC	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$89.50, pkg/50grids
Mo-400FC	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$174.75, pkg/25grids
Cu-300FC	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$89.50, pkg/50grids
Mo-300FC	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$174.75, pkg/25grids
Cu-200FC	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$89.50, pkg/50grids
Mo-200FC	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$174.75, pkg/25grids
For other kind of formvar/carbon coated grids, please email for details.

Holey Film Coated Grids

Although the carbon film could be very thin and usually presents no big problem in obscuring a sample, for high resolution studies of unstained biological macromolecules any interference on the beam. It can be problematic. For high resolution studies, holey grids are used in conjunction with freeze-sample (cryo) electron microscopy. Similar to normal carbon coated grids, holey grids are covered with a fine layer of carbon. However, as part of the preparation process, the carbon film is deposited in such a way that there are holes of a desired size in the carbon.

One of the purposes of these holes is to eliminate any absorption and scattering of the electron beam by the carbon film, which will generate noise and obstruct the signal. Because cryo EM does not use staining, any elimination of background noise is desirable. The holes also allow for "pockets" of solvent to form. Within these pockets, the specimen remains fully hydrated, even when the sample has been frozen. A problem can arise when holey grids are used in conjunction with proteins that are positively charged, such as DNA binding proteins. Because carbon film has a slight negative charge, especially after glow discharging, it readily attracts positively charged proteins. Therefore, such a protein will preferentially land on the carbon as opposed to the holes. A workaround has been developed using a secondary carbon layer. A holey grid is made as described above. Before depositing the sample, however, a very thin layer of carbon is deposited above the original film. Because this carbon is continuous, there is no preference to where the protein will lay down. Furthermore, the layer is thin enough to not have a great impact on the signal to noise ratio of the sample.

Holey film

The hole size in the holey films is from .5um to 10um.

2.1 Thin holey carbon film coated grids

This is pure holey carbon films coated grid. The holey carbon film is very clean and pure. The thickness of the carbon film is about 15nm. The hole size is from 0.2um to 8um. Since the pure carbon film is very fragile, we don't coat them on grids less than 200 mesh. This is the strongest and most versatile support film we produce. It is stable in the EM under all operating conditions including high magnification with high beam intensity. The films can withstand vigorous specimen preparation techniques Carbon: ~15nm, holes: 0.2um-4um (~80% small holes, ~20% large holes), 400 mesh grids, 300 mesh grids, 200 mesh grids.

Thin holey carbon film coated grids, arbon film thickness is ~15nm, holes is from 0.2um to 8um
Catalog#	Description	Unit Price
Cu-400HN	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$87.25, pkg/25grids
Mo-400HN	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$199.75, pkg/25grids
Cu-300HN	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$87.25, pkg/25grids
Mo-300HN	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$199.75, pkg/25grids
Cu-200HN	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$87.25, pkg/25grids
Mo-200HN	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$199.75, pkg/25grids
For other kind of holey carbon coated grids, please email for details.

2.2 Thick holey carbon film coated grids

This is pure holey carbon films coated grid. The holey carbon film is very clean and pure. The thickness of the carbon film is about 30nm. The hole size is from 0.2um to 8um. Since the pure carbon film is very fragile, we don't coated them on grids less than 200 mesh. This is the strongest and most versatile support film we produce. It is stable in the EM under all operating conditions including high magnification with high beam intensity. The films can withstand vigorous specimen preparation techniques Carbon: ~30nm,  holes: 0.2um-4um  (~80% small holes, ~20% large holes), 400 mesh grids, 300 mesh grids, 200 mesh grids.

Thick holey carbon film coated grids, carbon film thickness is ~30nm, holes is from 0.2um to 8um
Catalog#	Description	Unit Price
Cu-400HK	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$87.25, pkg/25grids
Mo-400HK	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$199.75, pkg/25grids
Cu-300HK	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$87.25, pkg/25grids
Mo-300HK	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$199.75, pkg/25grids
Cu-200HK	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$87.25, pkg/25grids
Mo-200HK	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$199.75, pkg/25grids
For other kind of holey carbon coated grids, please email for details.

2.3 Holey carbon film and continue carbon films (double films) coated grids

Pure carbon support films with no Formvar backing. This new product has an even thinner carbon film which is mounted on a carbon holey film. The carbon support layer lying over the holes is less than 3nm in thickness and is the thinnest support film available. It is particularly useful for high resolution microscopy of low contrast particles and is also ideal for use with the Energy Filtering TEM. The holey film layer is with hole size of 0.2 - 10um. Since the pure carbon film is very fragile, we don't coated them on grids less than 200 mesh. Continue carbon films: ~5nm, holey carbon film layer: ~30nm, holes size: .2um-10um (~80% small holes, ~20% large holes).

Holey/continue carbon double films coated grids, carbon: ~5nm and ~30nm, holes ~ 0.2-10um
Catalog#	Description	Unit Price
Cu-400HD	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$99.75, pkg/25grids
Mo-400HD	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$249.75, pkg/25grids
Cu-300HD	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$99.75, pkg/25grids
Mo-300HD	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$249.75, pkg/25grids
Cu-200HD	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$99.75, pkg/25grids
Mo-200HD	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$249.75, pkg/25grids
For other kind of holey carbon coated grids, please email for details.

2.4 Holey Formvar film coated grids

A holey formvar film is covered on the grids. This is a resilient, all-purpose specimen support film, ideal for mounting thin sections and for applications using lower ranges of magnification. The thickness of the formvar film is about 50nm. Formvar: ~ 50nm, All grids.

Holey formvar film coated grids, film ~50nm, hole 0.5-10um
Catalog#	Description	Unit Price
Cu-400HF	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$62.25, pkg/25grids
Mo-400HF	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$199.75, pkg/25grids
Cu-300HF	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$62.25, pkg/50grids
Mo-300HF	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$199.75, pkg/25grids
Cu-200HF	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$62.25, pkg/25grids
Mo-200HF	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$199.75, pkg/25grids
For other kind of holey formvar coated grids, please email for details.

2.5 Holey carbon/formvar film coated grids

A holey formvar film and holey carbon film are covered on the grids. The heat and electrical conducting properties of carbon help to stabilize the Formvar films when exposed to the electron beam. This is a resilient, all-purpose specimen support film, ideal for mounting thin sections and for applications using lower ranges of magnification. The thickness of the formvar film is about 50nm. The film is easly broken if it is too thin. The grid with less holes is need thicker formvar for the reason of stabilization. Carbon: ~15nm, Formvar: ~ 50nm, All grids

Holey carbon/formvar film coated grids, film ~50nm, hole 0.5-10um
Catalog#	Description	Unit Price
Cu-400HFC	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$62.25, pkg/25grids
Mo-400HFC	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$199.75, pkg/25grids
Cu-300HFC	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$62.25, pkg/25grids
Mo-300HFC	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$199.75, pkg/25grids
Cu-200HFC	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$62.25, pkg/25grids
Mo-200HFC	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$199.75, pkg/25grids
For other kind of Holey carbon/formvar coated grids, please email for details.

Lacey Film Coated Grids

Most samples for transmission electron microscopy must be "supported" on some kind of a thin electron transparent film, to hold the specimen in place while in the objective lens of the TEM. Only samples that are self- supporting do not need some additional support film. Should an electron microscope user use a support film at all if one is not absolutely needed? Probably not, even the very best quality of support films do result in more material being placed in the beam's path, resulting even if ever so slightly, the contrast of the final image. For many users, they don't have the luxury of having to make that decision: More often than not, even what appearing to be self-supporting samples, still do need the assistance of a support film to cut down on sample drift.

lacey network support film. The holes in the lacey support film vary in size from less than a quarter micron to more than 10 microns making them ideal for any type of specimen. Lacey support films are extremely strong and withstand vigorous specimen preparation treatment. The specimen material is supported by the film network but lies across or protrudes into the holes of the mesh. This allows high definition imaging without the effects of underlying support material. Lacey films can be used for specimens ranging from large crystals and other particulate material to virus particles. Smaller particles, such as viruses or bacteria, tend to adhere around the inner edges of the holes, an ideal situation for high resolution microscopy. Lacey films are also ideal for selected area electron diffraction imaging. We offer two types of lacey film: A problem can arise when holey grids are used in conjunction with proteins that are positively charged, such as DNA binding proteins. Because carbon film has a slight negative charge, especially after glow discharging, it readily attracts positively charged proteins. Therefore, such a protein will preferentially land on the carbon as opposed to the holes. A workaround has been developed using a secondary carbon layer. A holey grid is made as described above. Before depositing the sample, however, a very thin layer of carbon is deposited above the original film. Because this carbon is continuous, there is no preference to where the protein will lay down. Furthermore, the layer is thin enough to not have a great impact on the signal to noise ratio of the sample

Following table will help you determine what support film to use for your application.

The hole size in the holey films is from .5um to 10um.

3.1 Lacey carbon film coated grids

This is pure lacey carbon films coated grid. The holey carbon film is very clean and pure. The thickness of the carbon film is about 30nm. The hole size is from 0.2um to 8um. This is the strongest and most versatile support film we produce. It is stable in the EM under all operating conditions including high magnification with high beam intensity. The films can withstand vigorous specimen preparation techniques. Carbon: ~30nm, holes: 0.2um-4um  (~80% large holes, ~20% small holes), 400mesh grids, 300 mesh grids, and 200 mesh grids.

Lacey carbon film coated grids, carbon film thickness is ~30nm, holes is from 0.2um to 8um
Catalog#	Description	Unit Price
Cu-400LC	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$87.25, pkg/25grids
Mo-400LC	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$199.75, pkg/25grids
Cu-300LC	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$87.25, pkg/25grids
Mo-300LC	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um.	$199.75, pkg/25grids
Cu-200LC	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$87.25, pkg/25grids
Mo-200LC	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$199.75, pkg/25grids
For other kind of lacey carbon coated grids, please email for details.

3.2 Lacey/thin carbon film coated grids

This is a double layer of films coated grid, a lacey film and thin continuouse carbon film. The thickness of the carbon film is about 5nm. The layer film is with hole size of 0.2 to 10um. This is the strongest and most versatile support film we produce. It is stable in the EM under all operating conditions including high magnification with high beam intensity. The films can withstand vigorous specimen preparation techniques. carbon film: ~5-10nm, lacey film: ~30nm, holes size: .2um-10um (~80% large holes, ~20% small holes)

Lacey carbon/carbon film coated grids, film thickness: ~30nm/5nm, holes ~ 0.2-10um
Catalog#	Description	Unit Price
Cu-400LD	Copper grids, 400 mesh, 3.05mm O.D. hole size: ~42um	$99.75, pkg/25grids
Mo-400LD	Molybdenum, 400 mesh, 3.05mm O.D. hole size: ~42um	$249.75, pkg/25grids
Cu-300LD	Copper grids, 300 mesh, 3.05mm O.D. hole size: ~63um	$99.75, pkg/25grids
Mo-300LD	Molybdenum, 300 mesh, 3.05mm O.D. hole size: ~63um	$249.75, pkg/25grids
Cu-200LD	Copper grids, 200 mesh, 3.05mm O.D. hole size: ~97um	$99.75, pkg/25grids
Mo-200LD	Molybdenum, 200 mesh, 3.05mm O.D. hole size: ~97um	$249.75, pkg/25grids
For other kind of lacey carbon coated grids, please email for details.

Quantifoil Film Coated Grids

Four reasons to use Quantifoil: 1. With the known size of the pore of the Quantifoil, one can estimate the size of a particle observed directly. 2. With the defined size and pitch of the holes in the Quantifoil one can use automated electron microscopy for the first time. 3. The Quantifoil 7/2 gives a good portion of "free" area. 4. Hole size and hole distribution uniform over a wide range

The grids have been cleaned and trested very carefully, therefore, no plastics film and less charging under electron beams

Following table will help you determine what support film to use for your application.

The hole size in the holey films is from .5um to 10um.

Quantifoil R1/4 (hole:~1um; bar:~4um)
Catalog#	Description	Unit Price
Cu-400QC1/4	Copper 400 mesh grid coated with quantifoil R1/4	$299.75, pkg/25grids
Cu-300QC1/4	Copper 300 mesh grid coated with quantifoil R1/4	$299.75, pkg/25grids
Cu-200QC1/4	Copper 200 mesh grid coated with quantifoil R1/4	$299.75, pkg/25grids

Quantifoil R1.2/1.3 (hole:~1.2um; bar:~1.3um)
Catalog#	Description	Unit Price
Cu-400QC1/2	Copper 400 mesh grid coated with quantifoil R1.2/1.3	$299.75, pkg/25grids
Cu-300QC1/2	Copper 300 mesh grid coated with quantifoil R1.2/1.3	$299.75, pkg/25grids
Cu-200QC1/2	Copper 200 mesh grid coated with quantifoil R1.2/1.3	$299.75, pkg/25grids

Quantifoil R1/4 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC2/1	Copper 400 mesh grid coated with quantifoil R2/1	$299.75, pkg/25grids
Cu-300QC2/1	Copper 300 mesh grid coated with quantifoil R2/1	$299.75, pkg/25grids
Cu-200QC2/1	Copper 200 mesh grid coated with quantifoil R2/1	$299.75, pkg/25grids

Quantifoil R2/2 (hole:~2um; bar:~2um)
Catalog#	Description	Unit Price
Cu-400QC2/2	Copper 400 mesh grid coated with quantifoil R2/2	$299.75, pkg/25grids
Cu-300QC2/2	Copper 300 mesh grid coated with quantifoil R2/2	$299.75, pkg/25grids
Cu-200QC2/2	Copper 200 mesh grid coated with quantifoil R2/2	$299.75, pkg/25grids

Quantifoil R2/4 (hole:~2um; bar:~4um)
Catalog#	Description	Unit Price
Cu-400QC2/4	Copper 400 mesh grid coated with quantifoil R2/4	$299.75, pkg/25grids
Cu-300QC2/4	Copper 300 mesh grid coated with quantifoil R2/4	$299.75, pkg/25grids
Cu-200QC2/4	Copper 200 mesh grid coated with quantifoil R2/4	$299.75, pkg/25grids

Quantifoil R3.5/1 (hole:~3.5um; bar:~1um)
Catalog#	Description	Unit Price
Cu-400QC3/1	Copper 400 mesh grid coated with quantifoil R3.5/1	$299.75, pkg/25grids
Cu-300QC3/1	Copper 300 mesh grid coated with quantifoil R3.5/1	$299.75, pkg/25grids
Cu-200QC3/1	Copper 200 mesh grid coated with quantifoil R3.5/1	$299.75, pkg/25grids

Quantifoil S7/2 (hole:~7um; bar:~1um)
Catalog#	Description	Unit Price
Cu-400QC7/2	Copper 400 mesh grid coated with quantifoil S7/2	$299.75, pkg/25grids
Cu-300QC7/2	Copper 300 mesh grid coated with quantifoil S7/2	$299.75, pkg/25grids
Cu-200QC7/2	Copper 200 mesh grid coated with quantifoil S7/2	$299.75, pkg/25grids

Quantifoil Multi A (various hole size)
Catalog#	Description	Unit Price
Cu-400QCM	Copper 400 mesh grid coated with quantifoil Multi A	$299.75, pkg/25grids
Cu-300QCM	Copper 300 mesh grid coated with quantifoil Multi A	$299.75, pkg/25grids
Cu-200QCM	Copper 200 mesh grid coated with quantifoil Multi A	$299.75, pkg/25grids

4.2 Quantifoil/thin carbon film coated grids

Quantifoil R1/4 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC1/4N	Copper 400 mesh grid coated with quantifoil R1/4 with thin carbon film	$349.75, pkg/25grids
Cu-300QC1/4N	Copper 300 mesh grid coated with quantifoil R1/4 with thin carbon film	$349.75, pkg/25grids
Cu-200QC1/4N	Copper 200 mesh grid coated with quantifoil R1/4 with thin carbon film	$349.75, pkg/25grids

Quantifoil R1.2/1.3 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC1/2N	Copper 400 mesh grid coated with quantifoil R1.2/1.3 with thin carbon film	$349.75, pkg/25grids
Cu-300QC1/2N	Copper 300 mesh grid coated with quantifoil R1.2/1.3 with thin carbon film	$349.75, pkg/25grids
Cu-200QC1/2N	Copper 200 mesh grid coated with quantifoil R1.2/1.3 with thin carbon film	$349.75, pkg/25grids

Quantifoil R2/1 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC2/1N	Copper 400 mesh grid coated with quantifoil R2/1 with thin carbon film	$349.75, pkg/25grids
Cu-300QC2/1N	Copper 300 mesh grid coated with quantifoil R2/1 with thin carbon film	$349.75, pkg/25grids
Cu-200QC2/1N	Copper 200 mesh grid coated with quantifoil R2/1 with thin carbon film	$349.75, pkg/25grids

Quantifoil R2/2 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC2/2N	Copper 400 mesh grid coated with quantifoil R2/2 with thin carbon film	$349.75, pkg/25grids
Cu-300QC2/2N	Copper 300 mesh grid coated with quantifoil R2/2 with thin carbon film	$349.75, pkg/25grids
Cu-200QC2/2N	Copper 200 mesh grid coated with quantifoil R2/2 with thin carbon film	$349.75, pkg/25grids

Quantifoil R2/4 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC2/4N	Copper 400 mesh grid coated with quantifoil R2/4 with thin carbon film	$349.75, pkg/25grids
Cu-300QC2/4N	Copper 300 mesh grid coated with quantifoil R2/4 with thin carbon film	$349.75, pkg/25grids
Cu-200QC2/4N	Copper 200 mesh grid coated with quantifoil R2/4 with thin carbon film	$349.75, pkg/25grids

Quantifoil R3.5/1 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC3/1N	Copper 400 mesh grid coated with quantifoil R3.5/1 with thin carbon film	$349.75, pkg/25grids
Cu-300QC3/1N	Copper 300 mesh grid coated with quantifoil R3.5/1 with thin carbon film	$349.75, pkg/25grids
Cu-200QC3/1N	Copper 200 mesh grid coated with quantifoil R3.5/1 with thin carbon film	$349.75, pkg/25grids

Quantifoil S7/2 with thin carbon film
Catalog#	Description	Unit Price
Cu-400QC7/2N	Copper 400 mesh grid coated with quantifoil S7/2 with thin carbon film	$349.75, pkg/25grids
Cu-300QC7/2N	Copper 300 mesh grid coated with quantifoil S7/2 with thin carbon film	$349.75, pkg/25grids
Cu-200QC7/2N	Copper 200 mesh grid coated with quantifoil S7/2 with thin carbon film	$349.75, pkg/25grids

Quantifoil Multi A with thin carbon film
Catalog#	Description	Unit Price
Cu-400QCMN	Copper 400 mesh grid coated with quantifoil Multi A with thin carbon film	$349.75, pkg/25grids
Cu-300QCMN	Copper 300 mesh grid coated with quantifoil Multi A with thin carbon film	$349.75, pkg/25grids
Cu-200QCMN	Copper 200 mesh grid coated with quantifoil Multi A with thin carbon film	$349.75, pkg/25grids

Grid Storage Box

Ten Features for you to use it: 1. Cross-shape holes: Support for left/right hands. 2. Wheel shape female metal screw: release thermal extension power, never break. 3. Box size: fit to FEI vitrobot, vary cryo-EM transfer stages, easy to tighten/release the cap. 4. Screw cap: Fit to both Slot/Philips drivers. 5. Hole shape: Easy to pick up and release grids. 6. Overall box shape: easy to name and number 7. High transparency cap: easy to check the visualize the grid inside hole. 8. Male metal screw: never worry to break it by over tighten. 9. White box color: easy to mark and with a good visibility in liquid N2. 10. Metal male and female screw: Anti-freeze under liquid N2 temperature

Catalog#	Description	Per box	Unit Price
GB-4R	4 hole round shape Cryo-EM grid storage box.	$6.95	$6.95, pkg /1 box
GB-4S	4 hole square shape Cryo-EM grid storage box.	$6.95	$6.95, pkg /1 box
GB-100	100 hole TEM grid storage box	$6.95	$6.95, pkg /1 box
GB-50	50 hole TEM grid storage box	$5.95	$5.95, pkg /1 box

Plain Grids

The diameter of grids is standard 3.05mm. The Thickness is variable based on the grid materials. The thickness range is from 10um to 25um. The mesh of the grid is defined by the number of holes within 1 inch. For example, the 200 mesh grid has 20 holes along the diameter direction, 400 mesh grid has 40 holes in diameter.

Since the diameter of the grid has a standard length of 3.05mm, each hole size is less than ~200um in the 100 mesh grid, ~97um in the 200 mesh grid, ~63um in the 300 mesh grid and ~42um in the 400 mesh grid. Please notice that our grids have very smooth hole edge. The smooth edge grids can provide for a very flat film coated on them, which is critical for high resolution imaging.

600 mesh	500 mesh	400 mesh	300 mesh	200 mesh	100 mesh	50 mesh	Single hole	Slot hole
Copper (Cu-600) Cu/Rh (Cu/Rh-600) Nickel (Ni-600)	Copper (Cu-500) Nickel  (Ni-500)	Copper (Cu-400) Cu/Rh (Cu/Rh-400) Molybdenum  (Mo-400) Nickel  (Ni-400) Titanium (Ti-400)	Copper (Cu-300) Cu/Rh (Cu/Rh-300) Molybdenum  (Mo-300) Nickel  (Ni-300) Titanium (Ti-300) Steel (Fe-300)	Copper (Cu-200) Cu/Rh (Cu/Rh-200) Molybdenum (Mo-200) Nickel (Ni-200) Titanium (Ti-200) Gold (Au-200) Tungsten (W-200) Steel (Fe-200) Nylon (Ny-200)	Copper (Cu-100) Cu/Rh (Cu/Rh-100) Molybdenum (Mo-100) Nickel (Ni-100) Titanium (Ti-100) Gold (Au-100) Steel (Fe-100)	Copper (Cu-50) Molybdenum (Mo-50) Nickel (Ni-50) Titanium (Ti-50) Gold (Au-50) Steel (Fe-50)	Copper (Cu-s) Molybdenum (Mo-s)	Copper (Cu-50/200) (Cu-75-300) (Cu-100/400)