Group Size	Resin quantity	Hardener quantity	Mixed quantity	Mini pump	Saturation Coat Porous Surfaces	Build-up Coats Non-Porous Surfaces
A	105-A 1 qt (.94 L)	205-A or 206-A .43 pt (.20 L)	1.2 qt. (1.15 L)	300	90–105 sq ft (8.5–10m2)	120–135 sq ft (11–12.5 m2)
		207-A or 209-A .66 pt (.31 L)	1.3 qt. (1.26 L)	300	90–105 sq ft (9–10 m2)	120–135 sq ft 11–13 m2)
B	105-B .98 gal (3.74 L)	205-B or 206-B .86 qt (.81 L)	1.2 gal. (4.55 L)	300	350–405 sq ft (32–37 m2)	462–520 sq ft (43–48 m2)
		207-B or 209-B 1.32 qt (1.24 L)	1.3 gal. (4.98 L)	300	370–430 sq ft (35–40 m2)	490–550 sq ft (45–50 m2)
C	105-C 4.35 gal (16.47 L)	205-C or 206-C .94 gal (3.58 L)	5.29 gal. (20 L)	300	1530–1785 sq ft (142–165 m2)	2040–2300 sq ft (190–213 m2)
		207-C or 209-C 1.45 gal (5.49 L)	5.8 gal. (21.9 L)	300	1675–1955 sq ft (155–180 m2)	2235–2520 sq ft (207–233 m2)

WEST SYSTEM epoxy resin and hardeners are packaged in three "Group Sizes." For each container size of resin, there is a corresponding sized container of hardener. When purchasing resin and hardener, be sure all containers are labeled with the same Group Size letter (A, B or C). The 300 Mini Pumps can be configured to fit any Group Size.

Shelf life

If the containers are kept sealed when not in use WEST SYSTEM resins and hardeners should remain usable for many years. Over time, 105 Resin will thicken slightly and will therefore require extra care when mixing. Hardeners may darken with age, but physical properties are not affected by color. Mini Pumps may be left in containers during storage. It is a good idea, after a long storage to verify the metering accuracy of the pumps and mix a test batch to assure proper curing before applying epoxy to your project.

Epoxy Resin	Item #	Price
	105-A	$34.95
	105-B	$91.95
	105-C	$347.55

Hardener selection - select a hardener for its intended use and for the cure speed best suited for your job in the temperature range in which you are working.

205 Fast Hardener

205 Fast Hardener is a medium-viscosity epoxy curing agent. It is used in a majority of situations, at lower temperatures and to produce a rapid cure that develops its physical properties quickly at room temperature. When mixed with the 105 Resin in a five-part resin to one-part hardener ratio, the cured resin/hardener mixture yields a rigid, high-strength, moisture-resistant solid with excellent bonding and coating properties. Not intended for clear coating.

Mix Ratio, Resin:Hardener:	5:1 *
Pot life at 72°F (22°C):	9 to 12 minutes
Cure to a solid state:	6 to 8 hours
Cure to maximum strength:	1 to 4 days
Minimum recommended temperature:	40°F (4°C)
Pumps required:	300, 306 or 309

Fast Hardener	Item #	Price
	205-A	$16.25
	205-B	$35.95
	205-C	$124.80

Deduct 10% from List Prices Shown.
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206 Slow Hardener

206 Slow Hardener is a low-viscosity epoxy curing agent for use when extended working and cure time is needed or to provide adequate working time at higher temperatures. When combined with 105 Resin in a five-part resin to one-part hardener ratio, the cured resin/hardener mixture yields a rigid, high-strength, moisture-resistant solid with excellent bonding and coating properties. Not intended for clear coating.

Mix Ratio, Resin:Hardener:	5:1 *
Pot life at 72°F (22°C):	20 to 25 minutes
Cure to a solid state:	9 to 12 hours
Cure to maximum strength:	1 to 4 days
Minimum recommended temperature:	60°F (16°C)
Pumps required:	300, 306 or 309

Slow Hardener	Item #	Price
	206-A	$16.25
	206-B	$35.95
	206-C	$124.80

This hardener was especially developed for use with WEST SYSTEM Brand 105 Resin in coating applications where an exceptionally clear, moisture-resistant, natural wood finish is desired. Cures to a light amber color, similar to traditional spar varnishes. An ultraviolet inhibiting additive improves the resistance of a WEST SYSTEM 105/207 mixture to sunlight, but the cured epoxy surface will still require the additional protection of a quality UV-filtering varnish. 207 is designed to self level for smooth finishes, and to wet-out and bond fabrics. Although it provides good physical properties for general bonding applications, it is more difficult to thicken and less cost effective for this purpose than 205 or 206 Hardeners. It’s also used for laminating veneers where bleed through at joints may be exposed to sunlight.

Mix Ratio, Resin:Hardener:	3:1 *
Pot life at 72°F (22°C):	22 to 27 minutes
Cure to a solid state:	9 to 12 hours
Cure to maximum strength:	4 to 7 days
Minimum recommended temperature:	60°F (16°C)
Pumps required:	300, 306-3 or 309-3

Special Coating Hardener	Item #	Price
	207-SA	$31.90
	207-SB	$69.55
	207-SC	$229.85

Deduct 10% from List Prices Shown.

Mix Ratio, Resin:Hardener:	3:1 *
Pot life at 72°F (22°C):	40 to 50 minutes
Pot life at 95°F (35°C):	15 to 20 minutes
Cure to a solid state at 72°F (22°C):	20 to 24 hours
Cure to a solid state at 95°F (35°C):	6 to 8 hours
Cure to maximum strength at 72°F:	4 to 9 days
Minimum recommended temperature:	70°F (21°C)
Pumps required:	300, 306-3 or 309-3

Extra Slow Hardener	Item #	Price
	209-SA	$28.05
	209-SB	$62.95
	209-SC	$206.55

300 Mini Pump Set

300 Mini Pumps are designed for convenient and accurate metering of all Group Size A, B and C WEST SYSTEM resin and hardeners. They mount directly on the resin and hardener containers and eliminate the mess involved with measuring by weight or volume. 300 Mini Pumps are calibrated to deliver the proper working ratio with one full pump stroke of resin for each one full pump stroke of hardener.

The 300 Mini Pumps Set contains one resin pump and two hardener pumps. 105/205-206 pumps deliver approximately 0.8 fl oz of resin/hardener with one full stroke of each pump. 105/207-209 pumps deliver approximately 0.9 fl oz of resin/hardener with one full stroke of each pump.

As packaged, the pumps are ready to install on the Group Size B containers. A package of extension tubes for Group Size A containers is included with the set. Group Size C extension tubes are included in the 105-C Resin and in the 207-SC or 209-SC packages.

If necessary, you can combine different group sized-as long as all of the pumps have a yellow head. To avoid confusion and possible off-ratio metering, 300 Mini Pumps have yellow heads, which should not be used in with any older pumps with a white head (301 and 303 pumps).

Made of durable polypropylene, the pumps give years of dependable service. Read and follow the priming, ratio verification and operating instructions that come with the pumps.

	for Group Size	Qty	Item #	Price
Mini Pump Set	A, B or C	Set of 3	300	$11.15

306-25 Model A Metering Pump

For metering larger quantities of 105 Resin and 205 or 206 (5:1 ratio) Hardeners. The Model A Pump will reduce mixing time and waste on large projects. A carrying handle allows you to move the pump where the works is. Reservoirs hold one gallon of resin, one quart of hardener. Dispenses approximately 0.5 fl oz of resin/hardener per pump stroke.

306-23 Model A Metering Pump

Similar to 306 Model A Metering Pump described above. For metering 105 Resin and 207 Special Coating or 209 Extra Slow (3:1 ratio) Hardeners.

Model A Rebuild Kit

Includes seals, balls, gaskets, springs, high-rise tubes with ferrules and new resin and hardener reservoirs with lids.

306-K For 306 (5:1) ratio pump.
306-3K For 306-3 (3:1) ratio pump.

309 High-Capacity Gear Pump

For use with 205 or 206 (5:1 ratio) Hardeners. The 309 Gear Pump is designed and built by Gougeon Brothers for large projects and manufacturing operations. The home builder and professional alike will enjoy the efficiency of this high-volume pump. With continuous rotation of the crank, the metered resin and hardener can be delivered at up to five quarts per minute. Positive shutoff prevents resin and hardener loss through dripping spouts. Reservoirs hold two gallons of resin, one gallon of hardener.

309-3 High-Capacity Gear Pump

Similar to 309 High-Capacity Gear Pump described above. For metering 105 Resin and 207 Special Coating or 209 Extra Slow (3:1 ratio) Hardeners.