No, granite can vary in hardness. Granite consider next to diamond in hardness. It depends upon color. Some times it can also vary from the different lot.

Hardness is removed by a process called "ion exchange." Hardness-causing particles and debris are positively charged. The water runs through the resin system, which has millions of negatively charged sites. As the water flows past these sites, calcium, rock, iron and magnesium attach to the sites and are "bumped off." See similar questions...

Natural stone Granite have pits that are the part of stones structure. But pits can be minimized by applying sealer to the surface of counter top. See similar questions...

Answer: Honed granite has not been polished to a shine. It is a smooth, matte finish. Honed granite is lighter colored than its polished counterpart; however the color can be deepened with a color enhancing sealer. It should be noted that while honing a stone produces a look that appeals to many, homed stones are more susceptible to surface stains and will show things such as glass rings and pingerprints much more than polished stones do. See similar questions...

During 2006, the number of hourly employees ranged from 3,100 to 7,200 and averaged approximately 5,400. On December 31, 2006, the Company employed approximately 2,100 salaried employees who work in management, estimating and clerical capacities. See similar questions...

Step one: Using inches, multiply the Length times the Width times the Height of the piece of granite. See similar questions...

Marble and granite are very different types of rock. Granite is volcanic rock with characteristics that make it ideal for kitchen countertops. It is non-reactive with acidic foods (i.e. lemon juice, wine, etc.). It is also not heat sensitive and very difficult to scratch. Marble, on the other hand, is a sedimentary rock possibly containing former organic material. Thus marble is much softer than granite. It will burn; it will scratch; and it will react with certain acidic foods. See similar questions...

Yes granite has natural pits and fissures that are part of the stones natural structure. Some types of granite have more of such characteristics than other types, and pits can be minimized by applying sealer to the surface of the counter. See similar questions...

Granite is a porous product that requires some sealing periodically. Though natural stone varies in density, some stones need to be sealed more than others. We recommend to our customers that they seal their granite annually. We provide the sealer and show the customer how to do this. See similar questions...

Parts per million or grains per gallon are the most common. One part per million (PPM) is just what it says: out of one million units, one unit. Grains, or grains per gallon (GPG) is a weight measurement taken from the Egyptians; one dry grain of wheat, or about 1/7000 of a pound. It takes 17.1 PPM to equal 1 GPG. See similar questions...

Toronto's water hardness is usually between 120 to 125 parts per million (the average for 2005 was 121 milligram/litre or 8.6 grains/imperial gallon). Lake Ontario water is considered 'moderate' in terms of water hardness. There are no harmful health effects associated with these minerals (in fact, some believe they are beneficial), but measuring them does provide a guideline as to how water use may be affected. See similar questions...

Water softeners work on the principle of "ion exchange". "Ions" are electircally charged atoms or groups of atoms. Tiny beads of plastic (called resin) inside a water softener mineral tank are surrounded by ions of sodium or potassium which have a weak magnetic attraction to the resin. Calcium and/or magnesium ions (hardness) have a stronger magnetic attraction to the resin than the sodium or potassium. See similar questions...

The higher the number, the harder the wheel. For outdoor use, it's best to have a wheel below 90A. For indoor use, you'll want a wheel from 90A or higher. See similar questions...

Granite is an igneous (volcanic) rock consisting of Quartz, orthoclase or microcline. Granite holds very will against the harsh outside environment. Granite is mainly used for monuments and buildings but has become popular for interior use. You will find granite in kitchen countertops, fireplaces, furniture tops, and floors. See similar questions...