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Electron Microscopy Sciences

Material Science and Metrology

arrow13Cold and Hot Mounting Media, Molds, and Pressure Chamber

EMS introduces a selective range of embedding and mounting medium on the market for both HOT MOUNTING and COLD MOUNTING – for literally all kinds of material specimens.

See our complete line of Embedding Media Kits.

msdsmsdsmsdsarrow111. Hot Mounting

When preparation requirements include less expensive, uniform size and shape, and short processing times, hot mounting (hot compression mounting) is ideal.

Hot mounting takes place under pressure in a mounting press, where the specimen is placed in a cylinder together with the appropriate mounting resin. A temperature of up to 200°C, and a pressure of up to 50kN are then applied during the embedding of the specimen. There are two types of hot mounting processes: thermoplastic resins and thermo-setting resins.

Thermoplastic Resins melt when heated, offering the opportunity of repeating the process with the same specimen if the result is not satisfactory the first time. Thermoplastic resins harden during a chemical reaction with or without pressure. That means high pressure is not necessary during heating and cooling. This process is good when mounting fragile specimens.

Thermo-setting Resins cure at elevated temperatures under pressure. Thermo-setting resins cannot be re-melted after mounting.

Choosing a Hot Mount*

Cat # Resin Material Type Shrinkage
1-3
(Best=1)
Hardness
1-3
(Softest=1)
Application/
Specific
Properties.
1210 Black/GrayBlack/Gray Resin Acryl with
iron filler
Thermoplastic • • Electrolytic polishing.
1211 GrayGray Resin Acryl with
aluminium filler
Thermoplastic • • • • For soft materials.**
Fast mounting also when used as backing.
1212 ClearClear Resin Acryl Thermoplastic • • • • Transparent mounts. Porous specimens.***
Surface electrical insulator for ConduFast.
1213 BlackBlack Resin Epoxy with
mineral filler
Thermosetting • • • For hard materials.
Excellent edge retention.
1214 GreenGreen Resin Bakelite with
wood filler
Thermosetting • • • • • • Routine examination of soft to medium hard materials.
Suitable as backing.
1215 Light YellowLight Yellow Resin Melamine with mineral and glass filler Thermosetting • • • For soft to medium hard materials.
Excellent edge retention.
1216 BlackBlack Resin Bakelite with
carbon filler
Thermosetting • • SEM examination.
1217 BlackBlack Resin Bakelite with
wood filler
Thermosetting • • • • • • Routine examination of soft to medium hard materials.
Suitable as backing.
1218 RedRed Resin Bakelite with
wood filler
Thermosetting • • • • • • Routine examination of soft to medium hard materials.
Suitable as backing.
* 30 mm dia. mount with a 45% carbon steel specimen (20 vol%)
** Embedded abrasives can occur in the aluminium filler
*** For some materials, using sensitive mode

Specifications

Cat # Heating
Temp
Heating
Time
Heating
Pressure
(bar)
Cooling
Time
Cooling
Rate
Total
Process
Time
Removal
Rate
1210 180°C 3.5 min 250 1.5 min High 5 min High
1211 180°C 2.5 min 300 1 min High 3.5 min High
1212 180°C 4 min 350 6.5 min Low 10.5 min High
1213 180°C 3.5 min 325 2 min High 5.5 min Low
1214 180°C 3 min 250 2 min Medium 5 min Medium
1215 180°C 3.5 min 250 2 min High 5.5 min High
1216 180°C 3.5 min 250 1.5 min High 5 min High
1217 180°C 3 min 250 2 min Medium 5 min Medium
1218 180°C 3 min 250 2 min Medium 5 min Medium

Ordering Hot Mount Resins

Cat # Description Pkg Size Price  
1210 Black/gray acryl with iron filler, thermoplastic 1 kg 158.00 Add to Cart
1211 Gray acryl with aluminium filler, thermoplastic 1 kg 90.00 Add to Cart
1212 Clear acryl, thermoplastic 1 kg 150.00 Add to Cart
1213 Black epoxy with mineral filler, thermosetting 1 kg 140.00 Add to Cart
1214 Green bakelite with wood filler, thermosetting 1 kg 130.00 Add to Cart
1215 Light yellow melamine with mineral and glass filler, thermosetting 1 kg 148.00 Add to Cart
1216 Black bakelite with carbon filler, thermosetting 1 kg 160.00 Add to Cart
1217 Black bakelite with wood filler, thermosetting 1 kg 80.00 Add to Cart
1218 Red bakelite with wood filler, thermosetting 1 kg 40.00 Add to Cart

Cold mounting or embeddingarrow112. Cold Mounting

Cold mounting or embedding is when a resin is mixed with a hardener (or accelerator) to provide the mounting compound, and then the polymerization process take place to form the block. In some cases, this process gives-off heat. However this heat generation can be controlled by the use of ice or cool air blow setting. Cold mounting compounds are preferred for specimens that are sensitive to the heat or pressure, which applies during the hot mounting process. There are three types of cold mounting:

1. Epoxy Systems - Epoxies have the lowest shrinkage of all cold mounting resins. The curing time is relatively long, but the adhesion to most materials is excellent. They are also used for vacuum impregnation. The hardened epoxy is duroplastic and not affected by moderate heat or chemicals.

2. Acrylic System - Acrylics are easy to use resins with short curing times and negligible shrinkage. They consist of self-polymerizing components that harden with the addition of catalyst. Hardened acrylic is thermoplastic and resistant to most chemicals.

3. Polyester Systems - Polyester belongs to the catalyzed system, like acrylics. Curing times are relatively short and the hardened specimen is duroplastic.

Choosing a Cold Mount*

Cat # Resin Color Curing Time Shrinkage
From 1-4
(Best: 1)
Hardness Application
1232 EpoFixEpoFix Clear, Transparent
Refractive index: ND = 1.578
Approx 12 hours 78 Shore D Vacuum impregnation
Porous samples
Mineralogical samples
1233 EMSFixCaldoFix-2 Clear, Transparent
Refractive index: ND = 1.561
1½ hr in oven at 75°C/167°F 85 Shore D Vacuum impregnation
Porous samples
Mineralogical samples
1234 UniMountUniMount Clear, Transparent
Refractive index: ND = 1.573
8 hours 84 Shore D Vacuum impregnation
Porous samples
Mineralogical samples
1235 TransFixViaFix Colorless, clear (extremely clear when cured under pressure). Otherwise semi-transparent. 20 min. • • • 83 Shore D Vias
Microvias
1245 Epoxy-Dye Fluorescent dye for use in microscopy to make cracks and pores visible. For use with EpoFix and Unimount
1256 AcryMountAcrymount Dull yellowish, partly transparent 10 min • • • • 82 Shore D Routine examination
1257 GeoFixClaroCit Colorless, clear (extremely clear when cured under pressure). 20 min • • • 85 Shore D Extraordinarily
clear mounts
1258 MatFixDuroCit-3 Light yellow 30 min 85 Shore D Fast curing
No shrinkage
1259 LiteFixLevoCit Off-white 20 min • • 84 Shore D Edge Retention
Planeness
1265 Acrylic-DyeAcrylic-Dye Blue, Red & Yellow Dyes for easy identification of your acrylic mounts
1270 Poly-MountPolyMount Transparent
Polyester
Low viscosity
45 min • • • • Serial mounting of specimens not sensitive to heat
1276 Poly-AcryMountPolyAcryMount White
Polyester/Acrylic
18-25 min Edge Retention
Planeness
* 30 mm dia. mount with a 45% carbon steel specimen (20 vol%)

 

Specifications

Cat # Mixing Ratio
Weight
Mixing Ratio Volume Mixing
Time
Potlife Color Can be colored with EpoDye Can be colored with AcryDye Peak Temp
1232 Resin:
25 parts
Hardener: 3 parts
Resin:
15 parts
Hardener: 2 parts
2
min
30
min
Clear, Transparent
Refractive index: ND = 1.578
X   40°C
104°F
1233 Resin:
25 parts
Hardener: 7 parts
Resin:
31 parts
Hardener: 10 parts
5
min
>60
min
Clear, Transparent
Refractive index: ND = 1.561
X   170°C
338°F
1234 Resin:
7 parts
Curing Agent:
1 part
Resin:
26 parts
Curing Agent:
5 parts
3
min
60
min
Clear, Transparent
Refractive index: ND = 1.573
X   60°C
140°F
1235 Liquid:
11 parts
Powder:
9 parts
Liquid:
1 part
Powder:
2 parts
30
sec
2
min
Colorless, clear (extremely clear when cured under pressure). Otherwise semi-transparent X X 115°C
239°F
1245 Fluorescent dye for use in microscopy to make cracks and pores visible
1256 Liquid:
10 parts
Powder:
15 parts
Liquid:
1 part
Powder:
2 parts
30
sec
3
min
Dull yellowish, partly transparent X 100°C
212°F
1257 Liquid:
6 parts
Powder:
10 parts
Liquid:
2 parts
Powder:
5 parts

min

min
Colorless, clear (extremely clear when cured under pressure) X X 90°C
194°F
1258 Liquid I:
8 parts
Liquid II:
4 parts
Powder:
14 parts
Liquid I:
10 parts
Liquid II:
5 parts
Powder:
15 parts

min
4
min
Light yellow X 138°C
280°F
1259 Liquid:
10 parts
Powder:
20 parts
Liquid:
1 part
Powder:
2 parts
45
sec

min
Off-white X 75°C
167°F
1265 Blue, Red & Yellow
1270 Transparent
Polyester
Low viscosity
1276
White
Polyester/Acrylic
114°C
Cat # tds msds
1232  EpoFix Cold-Setting Embedding Resin   1232-A
    1232-B
1234  Unimount Kit   1234-A
    1234-B
1245  Epoxy Dye Set   1245
1256  AcryMount Embedding Resin   1256-H
    1256-R
1265  Acrylic Dye Set   1265
1270  Poly-Mount   1270-A
    1270-B
1276  Poly-AcryMount Embedding Kit   1276-A1
    1276-A2
    1276-B

Ordering Cold Mount Resins

(a) Epoxy Systems
1232 EpoFix Kit with 1L liquid resin, 130 ml hardening liquid Kit 156.00 Add to Cart
1233 EMSFix Kit with 1L resin, 325 ml hardenening liquid Kit 250.00 Add to Cart
1234 UniMount Kit with 500 ml liquid resin, 200 ml hardening liquid Kit 370.00 Add to Cart
1235 TransFix Kit with 570g powder, 500 ml liquid Kit 250.00 Add to Cart
1245 Epoxy-Dye, 20g Kit 86.00 Add to Cart
(b) Acrylic Systems
1256 AcrylMount Kit with 500g resin powder, 225 ml hardening liquid Kit 250.00 Add to Cart
1257 GeoFix Kit with 800g powder, 500 ml liquid Kit 295.00 Add to Cart
1258 MatFix Kit with 570g powder, 300 ml liquid I, 150 ml liquid II Kit 295.00 Add to Cart
1259 LiteFix Kit with 600g powder, 300 ml liquid Kit 260.00 Add to Cart
1265 Acrylic-Dye, 60 ml (20 ml each yellow, red, blue) Set of 3 116.00 Add to Cart
(c) Polyester Systems
1270 PolyMount Kit with 500 ml liquid resin; 15 ml hardening liquid Kit 70.00 Add to Cart
(d) Polyester/Acrylic Systems
1276 PolyAcryMount Kit with 870 g resin powder; 300 ml hardening liquid Kit 395.00 Add to Cart

Cold Embedding Moldsarrow11Cold Embedding Molds

These 2 part molds may be used for all cold embedding epoxies. Comes with a detached cap for easy removal. The molds come in 3 different sizes to accommodate all of the samples you may have. The molds are made from HDPE and we recommend the use of mold release spray (Catalog #72619) prior to use.

50481-20 Cold Embedding Molds 1" 10/pk 35.00 Add to Cart
50481-21 Cold Embedding Molds 1½" 10/pk 38.00 Add to Cart
50481-22 Cold Embedding Molds 1¼" 10/pk 42.00 Add to Cart

arrow11Mounting Cups for Cold Mounting/Embedding

Disposable Mold CupDisposable Mold Cup

Polyethylene, one part molds. Closed one end. Red

50480-10 Disposable Mold Cup 1⅛" 50/pk 32.00 Add to Cart
50480-15 Disposable Mold Cup 1¼" 50/pk 32.00 Add to Cart
50480-20 Disposable Mold Cup 1½" 50/pk 32.00 Add to Cart
Form MoldForm Mold

The form mold is a two part mounting cup, designed to be as user-friendly as possible. It has practical handles for removing of the lid and the cylinder is slightly conical for easy removal of the mounts.

51012-01 Form 25 mm / 1" dia 5/pk 35.00 Add to Cart
51012-02 Form 30 mm dia 5/pk 42.00 Add to Cart
51012-03 Form 40 mm dia 5/pk 60.00 Add to Cart
51012-04 Form 50 mm / 2" dia 5/pk 85.00 Add to Cart
51012-05 Form 1¼" dia 5/pk 42.00 Add to Cart
51012-06 Form 1½" dia 5/pk 42.00 Add to Cart
Silicone MoldSilicone Mold

This mold is for acrylic resins only and the best mounting cup for all of our acrylic resins. The flexible silicone rubber makes it very easy to remove the mount from the mounting cup.

51012-25 Silicone 25 mm 5/pk 122.00 Add to Cart
51012-30 Silicone 30 mm 5/pk 122.00 Add to Cart
51012-32 Silicone 32 mm 5/pk 71.00 Add to Cart
51012-38 Silicone 38 mm 5/pk 80.00 Add to Cart
51012-40 Silicone 40 mm 5/pk 122.00 Add to Cart
Flexible MoldFlexible Mold

The rectangular flexible moldis made of very flexible transparent silicone rubber which makes it very easy to remove the mounts. The inner sides are polished, so the sides of the mounts get clear. The sides are also straight which makes it easier to fasten the mounts in a specimen holder.

51012-55 Flexible 68 x 37 x 35 mm 2/pk 50.00 Add to Cart
51012-60 Flexible 90 x 50 x 35 mm 2/pk 65.00 Add to Cart
51012-65 Flexible 120 x 60 x 45 mm each 48.00 Add to Cart
Parallel MoldParallel Mold

Mounting cup with parallel sides that help avoid tilting of the mount when clamped into a specimen holder.

51012-70 Parallel 25 mm dia 5/pk 60.00 Add to Cart
51012-75 Parallel 30 mm dia 5/pk 62.00 Add to Cart
51012-80 Parallel 40 mm dia 2/pk 60.00 Add to Cart
Phenolic Ring MoldPhenolic Ring Mold

Impregnated phenolic, ¾" high

50483-15 Phenolic Ring Mold ¼" 10/pk 13.50 Add to Cart
50483-20 Phenolic Ring Mold 1½" 10/pk 14.00 Add to Cart

msdsmsdsThermo Conductive Paste

mold clips fixation clips
Fixation Clip 50487-30-31
taper section, copper
Taper Section Angle 50487-32

arrow11Hot & Cold Mounting/Embedding Accessories

 

50486-00 6 mm height metal spring clip to hold or position a small specimen upright. 100/pk 48.00 Add to Cart
50487-25 PlastiClips - Plastic clip used to support up to 5 small, thin specimens. (May not be suitable with Acrylic Resins), 25/pk 68.00 Add to Cart
50487-30 Fixation Clips, 6 mm dia; Support spring for small and thin specimens during mounting. 50/pk 85.00 Add to Cart
50487-31 Fixation Clips, 9 mm dia; Support spring for small and thin specimens during mounting. 50/pk 82.00 Add to Cart
50487-32 Taper Section Angle, Aluminium; Make measuring thickness of thin layers easier. By inclining the specimen you will get a magnification of the layer and this will enable you to make your measurement more reliable. 25/pk 80.00 Add to Cart
50487-33 Taper Section Angle, Copper 25/pk 75.00 Add to Cart
50487-34 Taper Section Angle, Steel 25/pk 75.00 Add to Cart
50487-35 Silicone Oil/Release Agent 100 ml 20.00 Add to Cart
50488-10 Mold Release - Mold release agent to be used with mounting press. 8g 70.00 Add to Cart
72619 Mold Release - Mold release agent to be used with cold mounting mold, PTFE-like spray. 15 oz can 23.00 Add to Cart
50494-25 Thermo Conductive Paste - For better heat transfer between heating/cooling unit and cylinder in hot mounting press. 25g 58.00 Add to Cart

Round Silicone Rubber Molds, ReusableRectangular Silicone Rubber Molds, Reusablearrow11Silicone Rubber Molds, Reusable

These reusable molds for cold embedding are made from sturdy, flexible, white silicone, and are easily removed without the need for release agents. Much smoother than rubber molds, enabling easy identification of samples in clear resins. They hold their shape to produce consistent, reliable round embedding.

arrow12Round Silicone Rubber Molds, Reusable

1" high, ¾" internal depth.

50484-10 1" (25.4 mm) dia. 10/pk 68.00 Add to Cart
50484-12 1¼" (31.75 mm) dia. 10/pk 70.00 Add to Cart
50484-14 1½" (38.1 mm) dia. 10/pk 78.00 Add to Cart
50484-16 2" (50.8 mm) dia. 5/pk 78.00 Add to Cart
arrow11Rectangular Silicone Rubber Molds, Reusable

1" high, ¾" internal depth.

50484-17 2¼ x 1" 5/pk 163.00 Add to Cart
50484-18 3 x 2" each 173.00 Add to Cart

arrow11Pressure Chamber

This chamber is designed in conjunction with our cold molded acrylic and epoxy media. After encapsulating the sample, they are placed inside the chamber. By applying between 30 to 40 PSI during the cure time, the mounting compound is compressed down and around the sample, forcing air up to the surface. This process helps eliminate shrinkage and increase clarity and edge retention. As an option an air pump tank is available. This Air Pump is designed for hand pumping pressure.

50465-10 Pressure Chamber each 425.00 Add to Cart
50465-20 Air Pump each 193.00 Add to Cart

Related Products

Adhesives and Mountants arrow13arrow13