Kitchen & Bathroom Countertop Solutions 
Technical Testing Data
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TEST PERFORMED |
TEST STANDARD |
RESULTS |
REMARKS |
SGS TEST REPORT |
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PHYSICAL PROPERTIES |
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Moisture Absorption |
ASTM C97 |
0.06% |
Low absorption means Kingstone Quartz nonporous finish resists stain and provides endurance power against bacteria development. |
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Density |
ASTM C97 |
151.95 lb/ft3 (2.435 g/cm3) |
Tested with 3/4" (2cm) thickness. 3/4" Kingstone Quartz = 151.95 lb/ft3. |
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DURABILITY |
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Mohs Hardness Scale |
DIN EN 10 |
Quartz =7 Diamond = 10 (highest) |
Gemstones and other minerals are ranked according to their Mohs hardness. Mohs hardness refers to a material's ability to resist abrasion or scratch. Quartz is harder and endures scratch better than any other natural stone. |
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Impact Resistance |
NEMA LD3 Section 3.8 |
No fracture |
This is a fracture resistance test. A half pound (224g) steel ball dropped from varying heights onto the surface. Developed concentric indentation at 84" drop but no surface fracture. |
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High Temperature Resistance |
NEMA LD3 Section 3.6 |
No effect |
No change in color or surface finish - no blistering, crazing, whitening, cracking, and delamination when tested at 365 degree Fahrenheit. (180 degree Celsius). |
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Cigarette Test |
ANSI Z124.6 Section 5.4 |
Pass |
No ignition or glow. Kingstone Quartz resists ignition by cigarettes. |
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STRENGTH |
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Flexural Strength |
ASTM C880 |
4,382 psi (308.1 kg/cm) |
Tested with 3/4" (2cm) thickness. This is a bending strength test. Kingstone Quartzis stronger and withstands bending better than natural stone. |
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Compressive Strength |
ASTM C170-09 |
30,400 psi (2,137.8 kg/cm) |
This is a compression stress test. High psi indicates Kingstone Quartz capacity to tolerate heavy load on surface. |
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STAIN RESISTANCE |
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Stain Resistance |
ANSI Z124.6 Section 5.2 |
No effect |
No stain after 16-hour exposure to crayon, shoe polish, ink, gentian violet solution, beet juice, grape juice, lipstick, hair dye, iodine, and wet tea bag. |
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Wear and Cleanability |
ANSI Z124.6 Section 5.3 |
Pass |
Wear: passed 10,000 scrub cycles. Cleanability: lost 1.1% of light reflectance after 25 cycles. |
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Resistance to Fungi and Bacteria |
ASTM G21 |
No traces of growth |
Kingstone Quartz is inherently resistant to fungi and mold due to its low moisture absorption and nonporous properties. |
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CHEMICAL RESISTANCE |
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Resistance to Household Chemical |
ANSI Z124.6 Section 5.5 |
Pass |
No visual damage after 16-hour exposure to naptha, ethyl alcohol, ammonia, citric acid, lye (drano), acetone, vinegar, pine oil, phenol (Lysol). |
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Resistance to Chemical Substances |
ASTM C650 |
Not affected |
This test measures resistance to acid, alkali, and chemical agents. Kingstone Quartz is not affected by majority of acids and hydroxide. |
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SAFETY AND HEALTH |
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Surface Burning |
ASTM E84 |
Class A rated |
Kingstone Quart is rated Class A building material by National Fire Protection Association - Life Safety Code (NFPA) and International Building Code (IBC) Chapter 8 Interior Finishes. |
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Volatile Organic Compounds (VOCs) |
EPA 5021 method |
7.01 mg/kg |
VOCs are a large group of carbon-based chemicals, which evaporate at room temperature. Kingstone Quartz test results are within the safe level in VOCs content. |
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Benzene Toluene Ethylbenzene Xylene (BTEX) |
EPA 5021 method |
Benzene and Xylene= Not detected Toluene = 5.45 mg/kg Ethylbenzene = 1.20 mg/kg |
Kingstone Quartz is tested to contain none or very low level of BTEX. |
No. CY/2010/A2150 |
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Styrene |
EPA 5021 method |
Not detected |
Kingstone Quartz product is safe from Styrene. |
No. CY/2010/A2151 |