Laboratory tests show that the thermal shock resistance of acrylic materials is much lower than that of composites. Acrylic sinks are broken and overcome with difficulty 1,000 cycles while the sinks of composite material have exceeded 10,000 cycles without any alteration.

An acrylic sink supports the fall of a weight of 500 gr. from a height of 80 cm., in a composite sink this height rises up to 140 cm, impact always made by the visible side.

According to ISO179 the composites give value of 78 kJ / m2 and the acrylic 6 KJ / m2.

According to DIN 53799, all stains are removed with water (in greasy stains it may be necessary to use a solvent). The strict European standard PrEn13310 is met with these types of stains as food simulants: methylene blue, sodium hydroxide, acetic acid, hypochlorite.

In a test according to the ASTMD640 made with MG / 100 grind cycles H18 a value of 72 mg is obtained for the composite material and 78 for the acrylics. The composite models comply with PrEn13310, which defines a TABER test with S33 wheels with 250gr supporting up to 500 cycles.

None of the models is marked with recipients with boiling oil at 180ºC, placed directly from the fire, for 30 min. In the case of the SMC-PiMC, the tests were carried out at 400ºC without an apparent marking.