Epoxy resin is an excellent material for fume cupboard bases. Outstanding chemical resistance and mechanical strength enable it to withstand the harsh environments encountered in fume cupboards.
Bases can be supplied from our extensive range of moulded sizes or fabricated to any non-standard size or configuration. In this way they may be tailored to suit individual requirements and applications using any of Simmons’ comprehensive range of sinks, dripcups and troughs.
One piece moulded bases are available in a range of common sizes which are shown in the table below. The width of these bases may be cut down to suit individual requirements. We also have moulds available for many other sizes of fume cupboard base. Please enquire about other sizes that you may require.
Other sizes of bases are also available
| Base Ref. | Length | Width |
|---|---|---|
| B900 | 884 to 900 | 645 to 800 mm |
| B1200 | 1184 to 1200 | 645 to 800mm |
| B1500 | 1484 to 1500 | 645 to 800mm |
| B1700 | 1684 to 1700 | 645 to 800mm |
| B945 | 945 to 995 | 655 to 800mm |
| B1245 | 1215 to 1245 | 655 to 800mm |
| B1545 | 1415 to 1545 | 655 to 800mm |
| B1745 | 1734 to 1745 | 670 to 780mm |
For sizes or configurations that cannot be produced by using our standard range of bases we can fabricate bases using 15 mm sheet and any of Simmons’ range of edgings. In this way a base can be made to almost any size up to 3000 mm long and approx. 1300 mm wide, with any width or configuration of edging.
The photo below shows a fabricated base with wide edging to both sides through which the services will be mounted. Other bases can have shaped edging to fit around sinks or drip cups. Flush fitting lids can also be provided to cover any cut outs in
the base.
In hostile fume cupboard environments the walls, roof and baffles may come under chemical attack, especially where chemicals at high temperatures will give off vapour. Simmons can provide lining panels made from solid 6 mm thick epoxy resin sheet to provide the necessary resilience.
Linings can be supplied as suitably shaped individual flat panels with appropriate cutouts and fixing mounts.
Alternatively Simmons can supply an assembled chamber constructed around a standard base with coved, or 45°, corners.
The colours shown on this website are a guide only and cannot be guaranteed to match the colour of components supplied by Simmons.
(24 hour sport test. Based on BS EN 438-2:1991).
Acetone
Unaffected
Acetonitrile
Unaffected
Ammonium Hydroxide – 28%
Unaffected
Aqua regia
Unaffected
Benzyl alcohol
Unaffected
Chloroform
Unaffected
Chloroform – 100%
Unaffected
Chromic acid pickle (*1)
Unaffected
Dicholoromethane
Surface attack
Dimethylformamide
Unaffected
Ethyl acetate
Unaffected
Formaldehyde – 37%
Unaffected
Hydrochloric acid – 30%
Unaffected
Hydrochloric acid – concentrated
Unaffected
Hydrofluoric acid – 40%
Slight bleaching
Hydrogen Peroxide
Unaffected
Methanol
Unaffected
Nitric acid – 70%
Very slight bleaching
Nitric acid – concentrated
Slight yellowing
Nitric acid – fuming
Attack and staining
Perchloric acid – 0.1N
Unaffected
Phosphoric acid – concentrated
Unaffected
Potassium hydroxide pellet (*2)
Unaffected
Sodium hydroxide – 50%
Unaffected
Sodium hydroxide pellet (*2)
Unaffected
Sodium hypochlorite
Unaffected
Sulphuric acid – 70%
Unaffected
Sulphuric acid – concentrated
Surface attack
Xylene
Unaffected
Tensile strength
85 N/mm²
Tensile Modulus
10,500 N/mm²
Elongation at break
0.8%
Flexural strength
112 N/mm²
Flexural Modulus
10,000 N/mm²
Compressive strength
190 N/mm²
Coefficient of linear thermal expansion
34 x 10⁶
Water absorption – 24 hours at 23ºC
5–10 mg (0.06–0.068%) ISO 62 (1980)
Thermal Shock
2000 cycles (90 sec. at 75ºC, 90 sec. dwell, 90 sec. at 15ºC)
No effect
Should not be used with dry-ice or liquid nitrogen
Smoke Emission
Low Smoke Emission – BS 6853 1999 App. D Clause d.8.4
Result – Ao(on) 8.75, Ao(off) 10.41
Flammability
Class 0
Thermal Decomposition
350ºC
Glass transition temperature (Tg)
120 – 130ºC
Decontamination factor (geometric mean)
5598.0
Deviation factor
1.25
Ease of radioactive decontamination classification
"Excellent"