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Duratop Specifications

Duratop Epoxy Specifications

Click Here to download the Epoxy Resin Architectural Specifications (PDF)

Click Here to download the Architectural Checklist (PDF)






DURATOP Epoxy Resin Countertops are filled epoxy resin, molded into homogenous, non-porous sheets with no surface coating. All sheets are color and pattern consistent throughout the thickness and will have integral or adhesively seemed components up to maximum practical length. Epoxy resin lab tops are molded from modified epoxy resins and inert fillers that have been compounded and completely cured in processing to provide optimum physical and chemical resistance properties required of a heavy duty laboratory table top.

THICKNESS - In addition to the wide variety of sheet sizes available, DURATOP monolithic, solid cast epoxy lab top
work surfaces, with their smooth, non-glare matte finish, are molded in several thickness', with the typical and most popular thickness being 1" (25mm).

When fabricating Duratop laboratory tops and sheet material at the ISO 9001 certified manufacturing facility, all fabricated cuts are made with diamond tipped, water cooled, rotary saws. Sink cutouts, faucet or gas tap fixture holes or other service hole requirements, are cut with CNC diamond tipped routers and drill bits. Typical specification for epoxy countertops in accordance with The Woodworking Institute (W.I.) and its US or Canadian affiliates is 25mm or 1" Thickness. The maximum spCan for unsupported epoxy shall not exceed 30" (762mm) without intermediate support. The maximum cantilever shall not exceed 12" (305mm) without intermediate support.

The fabricated sheet material comes with a drip groove cut on the front underside of the sheet material at a prescribed depth of 1/8" (3mm), 1/8" (3mm) width and 1/2" (12mm) distance from the front or side edge.

EDGE DETAIL

Current manufactured and available thickness' are:

IMPERIAL
METRIC
3/4"
19/20 MM
1"
25 MM
1 1/4"
32 MM

EPOXY CURBING 4" (100 mm) typical, also known as applied splash, is provided loose, cut to size for field application, with each sheet order, if required, to match the countertop sizing, or can be field cut from sheet material to meet job requirements. The top front edge and exposed sides are typically eased with a 3/16" radius, 1/8" bevel or chamfer.
An alternative to applied back splash is our Integral Coved Curbing (ICC) as described in the below sections.

backsplash cutawayTop

Integral Coved Curb backsplash
INTEGRAL or COVED CURB back splash is offered in a maximum molded height of 4" (100 mm). Molds for 6" and or 8" height molded curbing are NO LONGER AVAILABLE.

Corner units for left and right side applications with 4" Integral Coved Curbing can be produced from a mold at a size of 44 3/4" square (1137 mm) and then cut to size to meet all requirements for Integral Coved curb corner splash areas.

Side or return splash however, are typically supplied to the same height as the Integral splash, but cut to size from sheet material, for set-on field applied application with a square joint seam.

Coved Curb worksurfaces should be used when reducing the number of back splash joints is of high priority or architectural specifications call for integral coved curb splash. Full length Integral Coved Backsplash are available in seamless lengths up to 96" [2438mm] and depths up to 38" [965mm]. Other sizes are available or larger sheet depths can be cut to meet specific requirements. Integral coved curb worksurfaces are typically molded 1" [25mm] thick with cove tapered at the top to 3/4" (19 MM) with 3/4" (19 mm) radius at the cove.

By special request, 3/4" (19mm) and 1-1/4" [32mm] thick worksurfaces can be ordered with an Integral curb of 4" [102mm] or 8" (200mm) height. For other special height integral curbs, please contact TLS for availability.

Integral-Coved-Curb

Both Left and Right Side Integral Coved Corner Curbs are produced
at a molded size Cove-Curb-Moldedof 44 3/4" finished inches (1,137 MM) square.
This corner coved curb comes with a 44 3/4 " Side Curb (1137 mm)
and a integrally molded back splash curb of 44 3/4" (1137mm).
The depth of 44 3/4" molded section can then be fabricated and reduced
to the required width or depth of the counter, as specified, be it 24", 25", 30, 31",
(609mm, 635mm, 762mm 787mm), etc.



MOLDED Marine Edge / No-Drip Edge
Duratop epoxy countertops or laboratory tops can be manufactured with an integral no-drip marine edge on front and/or sides, as required or specified.


Integral Coved Curb backsplash with Molded Marine or No-Drip edge
Countertop or bench toppings of DURATOP Epoxy are also made with factory molded Integral Coved Curb (ICC) with an integral no-drip marine edge for a seamless molded unit, up to the standard molding capability of depth and length.

CovedCurb-ME

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Unapplied Marine Edge (UME) Duratop epoxy flat strips
- Duratop epoxy UME strips are used for attachment on the top surface of counter top material to form a marine edge or no-drip edge and offered in +1/4" (7mm) thickness and 1.9 meters (6.27 feet) long. Now available in a "flat" section that attaches only to the surface of Duratop epoxy or Resistop solid phenolic in a width or depth of 1.1" (28mm) or in an "L" shape configuration attached to the surface while covering the front edge as well. Heights of the front edge range from 3/4" to 1.25" (19mm to 32mm).
AME
Unapplied Marine Edge Strips in "L" Shape configuration:
Duratop Epoxy strips can be field applied to 3/4" (19mm), 1" (25mm) or 1.25" (32mm) thick epoxy or solid phenolic resin countertops to form a no-drip marine edge.

The "L" shaped design allows for coverage of the front edge of the
countertop face up to 1.45" (37mm) as well as the top surface in order to provide a uniform epoxy no-drip edge treatment to the work surface material.
UME "L" shaped strips are NOT sold without epoxy sheet materials and only available in Black Epoxy.

Window Sills (Stools) Epoxy - Material shall be monolithic, DURATOP cast epoxy resin product and shall
consist of a polymerized cast resin material formulated to provide a surface with high chemical resistance characteristics.  The combination of epoxy resin and asbestos free inert filler materials shall be oven-cured in molds to obtain maximum chemical resistance, and then removed from the molds and oven tempered to achieve maximum physical strength and stability.  Surfaces shall have a uniform low-sheen matte surface finish and the materials shall be extremely hard and resistant to scratches and abrasion. Surface is to be flat with square side edges or fabricated and finished if sills protrude past wall depth. Color shall be as required by architect or site conditions, obtained from the manufacturer's standard color range. Colored Epoxy adhesive for securing interior stools to substrate shall be Duratop Epoxy Smooth-On-2 part adhesive cement.

See accessories for other Epoxy related products available.

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Physical Characteristics
DURATOP - Laboratory Grade Epoxy

Physical Property
ASTM Method
RESULTS
FLEXURAL STRENGTH
ASTM D790-07
14,500 to 14,900 psi
MODULUS of ELASTICITY
ASTM D790
2,000,000 psi
COMPRESSIVE STRENGTH
ASTM D695-02
33,500 to 38,100 psi
TENSILE STRENGTH
ASTM D638 / D651
6,400+ psi
HARDNESS, ROCKWELL "M" scale
ASTM D785-08
Values of 105 to 113
over 5 samples - Average 109
SPECIFIC GRAVITY (Density)
ASTM D792-00
126.75 lb/ft3 / 2.03 g/cm3
  to 133 lb/ft3 / 2.13 g/cm3
WATER ABSORPTION
ASTM D570-98
0.008 to 0.02% after 24 hours
HEAT DISTORTION
ASTM D648-07
380 F (193 C)
FLAMMABILITY or FIRE RESISTANCE
ASTM D635
DID NOT IGNITE or
SELF EXTINGUISHING
FALLING BALL IMPACT RESISTANCE
ERF-23-69
NO FRACTURE @ 7 FEET
TEMPERATURE USE LIMIT
331F (166C)
COEFFICIENT OF THERMAL EXPANSION
ASTM E831-06
2.1 to 2.4 x 10-5 power in/in per Degree C
FUNGAI & BACTERIAL GROWTH RESISTANCE
ASTM G21 & G22
APPROVED
FOOD AND SPLASH ZONE
NSF / ANSI standard 51
APPROVED
Fire Resistance - Smoke Developed Index
E84-06
8.71 (in) / 221.2 (mm)

Duratop epoxy is nonporous which makes it naturally anti-microbial, anti-bacterial, and anti-fungal growth resistant..
Note: ASTM G22-76(1996) Standard Practice for Determining Resistance of Plastics to Bacteria was (Withdrawn in 2002)

Dry Ice and Liquid Nitrogen Warning
Duratop epoxy resin laboratory tops are the materials of choice for the harsh environment of research laboratories, schools, hospital or other wet lab facilities. Epoxy tops or work surface products and the Duratop epoxy sinks however are subject to thermal shock when in contact with dry ice or liquid nitrogen and our products are not warranted against damage from their use.  The improper use of dry ice or liquid nitrogen may cause cracking or sink failure.


BUNSEN BURNER Fire Resistance TEST mad-scientist

USING ASTM D-635 TEST PROCEDURE, A 3/8" (9.525mm) BUNSEN BURNER, ADJUSTED TO A QUIET FLAME WITH A 1.5" (38MM) INNER CONE, WAS OVERTURNED ON THE DURATOP EPOXY WORK SURFACE FOR A PERIOD OF FIVE (5) MINUTES WITH NO ADVERSE EFFECT, WITHOUT EXHIBITING ANY BLISTERS, CRACKS, NOR ANY BREAKDOWN OF THE WORK SURFACE. DURATOP EPOXY RESIN IS SELF EXTINGUISHING AND SHOWS NO BURN RATE, IN ACCORDANCE WITH ASTM METHOD D-635.

HOT CRUCIBLE TEST

DURATOP EPOXY RESIN WAS TESTED UNDER THE HOT CRUCIBLE TEST PROCEDURE BY PLACING A HIGH FORM PORCELIN CRUCIBLE
(15ML CAPACITY) ONTO THE LAB COUNTERTOP AFTER HEATING OVER A BUNSEN BURNER UNTIL THE CRUCIBLE BOTTOM ATTAINS A DULL RED HEAT. IMMEDAITELY AFTER, THE HOT CRUCIBLE IS TRANSFERRED TO THE WORK SURFACE AND ALLOWED TO COOL TO ROOM TEMPERATURE. THE RESULT WAS THAT THE EPOXY RESIN SURFACE EXHIBITED NO BLISTERS, CRACKS NOR ANY BREAKDOWN OF THE WORK SURFACE.

ALL INFORMATION DESCRIBED HEREIN IS BASED UPON MANUFACTURERS' TESTS AND DATA BELIEVED TO BE ACCURATE AND CURRENT. THE INFORMATION PROVIDED IS TYPICAL AVERAGE VALUES AND CHEMICAL RESULTS MAY BE COLOR DEPENDENT.

NO ONE MATERIAL IS SUITABLE FOR ALL THE CONDITIONS POSSIBLE. THEREFORE THE PROPERTIES OF ANY MATERIAL SHOULD BE CHECKED FOR SUITABILITY UNDER THE SPECIFIC CONDITIONS OF EACH INSTALLATION. THE FINAL DETERMINATION FOR SUITABILITY OF DURATOP EPOXY RESIN MATERIALS DESCRIBED ABOVE IS THE SOLE RESPONSIBILITY OF THE USER
.

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Click Here to view our Duratop Epoxy Architectural Specifications (PDF)